Merge pull request #11 from sot-tech/sql-backend

PostgreSQL backend
2026-06-12 15:53:32 -07:00 · 2022-06-21 18:26:58 +03:00
parent 615bcb2050 17f98763bf
commit 4468794de1
21 changed files with 1164 additions and 102 deletions
@@ -26,6 +26,18 @@ jobs:
            redis:
                image: "eqalpha/keydb"
                ports: [ "6379:6379" ]
+            postgres:
+                image: "postgres:latest"
+                env:
+                    POSTGRES_DB: test
+                    POSTGRES_USER: postgres
+                    POSTGRES_HOST_AUTH_METHOD: trust
+                ports: [ "5432:5432" ]
+                options: >-
+                    --health-cmd pg_isready
+                    --health-interval 10s
+                    --health-timeout 5s
+                    --health-retries 5
        steps:
            -   uses: "actions/checkout@v3"
            -   uses: "actions/setup-go@v3"
@@ -13,7 +13,7 @@ Modified version of [Chihaya](https://github.com/chihaya/chihaya), an open sourc
 * Supports BittorrentV2 hashes (SHA-256 and _hybrid_
  SHA-256-to-160 [BEP52](https://www.bittorrent.org/beps/bep_0052.html), tested with qBittorrent);
 * Supports storage in middleware modules to persist useful data;
-* Supports [KeyDB](https://keydb.dev) storage;
+* Supports [KeyDB](https://keydb.dev) and [PostgreSQL](https://www.postgresql.org) storages;
 * Metrics can be turned off (not enabled till it really needed);
 * Allows mixed peers: IPv4 requesters can fetch IPv6 peers or vice versa;
 * Contains some internal improvements.
@@ -18,6 +18,7 @@ import (
 	// Imports to register storage drivers.
 	_ "github.com/sot-tech/mochi/storage/keydb"
 	_ "github.com/sot-tech/mochi/storage/memory"
+	_ "github.com/sot-tech/mochi/storage/pg"
 	_ "github.com/sot-tech/mochi/storage/redis"
 )

@@ -30,11 +30,11 @@ func main() {
 	flag.Parse()

 	if err := l.ConfigureLogger(*logOut, *logLevel, *logPretty, *logColored); err != nil {
-		log.Fatal("unable to configure logger ", err)
+		log.Fatal("unable to configure logger: ", err)
 	}

 	if err := s.Run(*configPath); err != nil {
-		log.Fatal("unable to start server ", err)
+		log.Fatal("unable to start server: ", err)
 	}
 	defer s.Dispose()
 	ch := make(chan os.Signal, 2)
@@ -141,10 +141,10 @@ mochi:
            # are collected and posted to Prometheus.
            prometheus_reporting_interval: 1s

-            # This block defines configuration used for redis storage.
-            #storage:
-            #name: redis
-            #config:
+    # This block defines configuration used for redis storage.
+    #storage:
+        #name: redis
+        #config:
            # The frequency which stale peers are removed.
            # This balances between
            # - collecting garbage more often, potentially using more CPU time, but potentially using less memory (lower value)
@@ -194,6 +194,58 @@ mochi:
            # Dial timeout for establishing new connections.
            #connect_timeout: 15s

+              # This block defines configuration used for PostgreSQL storage.
+              # example `mo_peers` table structure:
+              # - info_hash bytea
+              # - peer_id bytea
+              # - address inet or bytea
+              # - port int4
+              # - is_seeder bool
+              # - is_v6 bool
+              # - created timestamp
+              #storage:
+              #name: pg
+              #config:
+              # connection string to pg storage. may be URL (postgres://...) or DSN (host=... port=...)
+              #connection_string: host=127.0.0.1 database=test user=postgres pool_max_conns=50
+              # query and parameters for announce operation
+              #announce:
+              #query: SELECT peer_id, address, port FROM mo_peers WHERE info_hash=$1 AND is_seeder=$2 AND is_v6=$3 LIMIT $4
+              #peer_id_column: peer_id
+              #address_column: address
+              #port_column: port
+              #peer:
+              # expected parameters: 1 - info hash (bytea), 2 - peer id (bytea), 3 - ip address (bytea/inet)
+              # 4 - port (int), 5 - is seeder (bool), 6 - is IPv6 (bool), 7 - create date and time (timestamp)
+              #add_query: INSERT INTO mo_peers VALUES($1, $2, $3, $4, $5, $6, $7) ON CONFLICT (info_hash, peer_id, address, port) DO UPDATE SET created = EXCLUDED.created, is_seeder = EXCLUDED.is_seeder
+              #del_query: DELETE FROM mo_peers WHERE info_hash=$1 AND peer_id=$2 AND address=$3 AND port=$4 AND is_seeder=$5
+              #graduate_query: UPDATE mo_peers SET is_seeder=TRUE WHERE info_hash=$1 AND peer_id=$2 AND address=$3 AND port=$4 AND NOT is_seeder
+              #count_query: SELECT COUNT(1) FILTER (WHERE is_seeder) AS seeders, COUNT(1) FILTER (WHERE NOT is_seeder) AS leechers FROM mo_peers
+              # predicate part of `count_query` for get count of peers by info hash
+              #by_info_hash_clause: WHERE info_hash = $1
+              #count_seeders_column: seeders
+              #count_leechers_column: leechers
+              # queries for KV-store
+              #data:
+              # expected parameters: 1 - context (varchar), 2 - name (bytea), 3 - value (bytea)
+              #add_query: INSERT INTO mo_kv VALUES($1, $2, $3) ON CONFLICT (context, name) DO NOTHING
+              #del_query: DELETE FROM mo_kv WHERE context=$1 AND name=$2
+            #get_query: SELECT value FROM mo_kv WHERE context=$1 AND name=$2
+            # query for check if database is alive
+            #ping_query: SELECT 1
+            # query for garbage collection, expected parameter is timestamp
+            #gc_query: DELETE FROM mo_peers WHERE created > $1
+            # The amount of time until a peer is considered stale.
+            # To avoid churn, keep this slightly larger than `announce_interval`
+            #peer_lifetime: 31m
+            # The frequency which stale peers are removed.
+            #gc_interval: 3m
+            # query for info hash statistics
+            #info_hash_count_query: SELECT COUNT(DISTINCT info_hash) as info_hashes FROM mo_peers
+            # The interval at which metrics about the number of info hashes and peers
+            # are collected and posted to Prometheus.
+            #prometheus_reporting_interval: 1s
+
    # This block defines configuration used for middleware executed before a
    # response has been returned to a BitTorrent client.
    prehooks:
@@ -0,0 +1,152 @@
+# PostgreSQL Storage
+
+This storage uses PostgreSQL-like database to store peer and arbitrary key-value data.
+
+'PostgreSQL-like' means, that you can use any database which _understand_ PostgreSQL protocol
+i.e. _real_ [PostgreSQL](https://www.postgresql.org) or [CockroachDB](https://www.cockroachlabs.com).
+
+_(YugabyteDB is not recommended (at the moment), because of some problems with
+concurrent inserts while benchmarks.)_
+
+# Use case
+
+Redis is good and fast solution for storing MoChi data, which used across multiple nodes,
+but it is in-memory DB and there are some problems with it:
+
+1. on heavy load it consumes a lot of memory, which increased up to 3x times while snapshot (bgsave)
+2. if redis reaches memory limit it just stops working
+3. when HA is not used and redis instance dies, it loses all data from last snapshot
+
+On the other hand, PostgreSQL relies on persistent storage:
+it much slower than in-memory solution (especially in insert operations),
+however it can serve about 10 millions MoChi records using OOTB parameters
+(128MiB shared buffers and 4MiB work memory consumption)
+with suitable enough performance.
+
+So if you don't have a lot of RAM, but have a lot of peers/info hashes,
+you might use this store type.
+
+## Configuration and implementation notes
+
+This store type relies on database structure and queries that
+you provide in configuration.
+
+Implementation expects next data types:
+
+* Table for peers:
+	* info hash - byte array (`bytea`)
+	* peer ID - byte array (`bytea`)
+	* peer address - `inet` or byte array (`bytea`)
+	* peer port - integer or derivative type (`int4`, `integer`)
+	* is seeder - boolean (`bool`)
+	* is IPv6 - boolean (`bool`)
+	* peer creation date and time - `timestamp`
+* Table for arbitrary data (KV store):
+	* context - string (`varchar`, `character varying`)
+	* name - string (`varchar`, `character varying`)
+	* value - byte array (`bytea`)
+
+Sample script to create tables:
+
+```sql
+CREATE TABLE mo_peers
+(
+    info_hash bytea     NOT NULL,
+    peer_id   bytea     NOT NULL,
+    address   inet      NOT NULL,
+    port      int4      NOT NULL,
+    is_seeder bool      NOT NULL,
+    is_v6     bool      NOT NULL,
+    created   timestamp NOT NULL DEFAULT current_timestamp,
+    PRIMARY KEY (info_hash, peer_id, address, port)
+);
+
+CREATE INDEX mo_peers_created_idx ON mo_peers (created);
+CREATE INDEX mo_peers_announce_idx ON mo_peers (info_hash, is_seeder, is_v6);
+
+CREATE TABLE mo_kv
+(
+    context varchar NOT NULL,
+    name    bytea   NOT NULL,
+    value   bytea,
+    PRIMARY KEY (context, name)
+);
+```
+
+_Note: CockroachDB currently does not support index
+over `inet` type, but it is possible to use `bytea` instead._
+
+```yaml
+storage:
+    name: pg
+    config:
+        # Connection string to PostgreSQL.
+        # May be URL (postgres://...) or DSN (host=... port=...)
+        connection_string: host=127.0.0.1 port=5432 database=... user=...
+        announce:
+            # Query to select peers by info hash and flags
+            query: SELECT peer_id, address, port FROM mo_peers WHERE info_hash=$1 AND is_seeder=$2 AND is_v6=$3 LIMIT $4
+            # Column name of peer id in `query` above (case-insensitive). 
+            peer_id_column: peer_id
+            # Column name of address in `query` above (case-insensitive).
+            address_column: address
+            # Column name of port in `query` above (case-insensitive).
+            port_column: port
+        peer:
+            # Query to add peer info.
+            # Expected arguments: 
+            # 1 - info hash (bytea), 
+            # 2 - peer id (bytea), 
+            # 3 - ip address (bytea/inet)
+            # 4 - port (int4), 
+            # 5 - is seeder (bool), 
+            # 6 - is IPv6 (bool), 
+            # 7 - create date and time (timestamp)
+            # Query MUST handle situations when tuple 
+            # `info hash - peer ID - address - port` is already 
+            # exists in table
+            add_query: INSERT INTO mo_peers VALUES($1, $2, $3, $4, $5, $6, $7) ON CONFLICT (info_hash, peer_id, address, port) DO UPDATE SET created = EXCLUDED.created, is_seeder = EXCLUDED.is_seeder
+            # Query to delete peer info.
+            # Query SHOULD take into account value of `is seeder` flag
+            del_query: DELETE FROM mo_peers WHERE info_hash=$1 AND peer_id=$2 AND address=$3 AND port=$4 AND is_seeder=$5
+            # Query to update leecher to seeder
+            graduate_query: UPDATE mo_peers SET is_seeder=TRUE WHERE info_hash=$1 AND peer_id=$2 AND address=$3 AND port=$4 AND NOT is_seeder
+            # Query to get count of peers.
+            # Used both for statistics and for scrape (with clause suffix, see next).
+            # Only first returned row values used.
+            count_query: SELECT COUNT(1) FILTER (WHERE is_seeder) AS seeders, COUNT(1) FILTER (WHERE NOT is_seeder) AS leechers FROM mo_peers
+            # Predicate part of `count_query` for get count of peers by info hash
+            by_info_hash_clause: WHERE info_hash = $1
+            # Column name of seeders count in `count_query` (case-insensitive).
+            count_seeders_column: seeders
+            # Column name of leechers count in `count_query` (case-insensitive).
+            count_leechers_column: leechers
+        # Queries for KV-store
+        data:
+            # Query to add data.
+            # Expected arguments: 
+            # 1 - context (varchar), 
+            # 2 - name (bytea), 
+            # 3 - value (bytea)
+            add_query: INSERT INTO mo_kv VALUES($1, $2, $3) ON CONFLICT (context, name) DO NOTHING
+            # Query to delete data.
+            del_query: DELETE FROM mo_kv WHERE context=$1 AND name=$2
+            # Query to get data.
+            # Only first returned row and column value used.
+            get_query: SELECT value FROM mo_kv WHERE context=$1 AND name=$2
+        # Query for check if database is alive (can be omitted)
+        ping_query: SELECT 1
+        # Query to delete stale peers (peers, which timestamp older than provided argument)
+        gc_query: DELETE FROM mo_peers WHERE created > $1
+        # The frequency which stale peers are removed.
+        gc_interval: 3m
+        # Query to get all info hash count (used for statistics).
+        # Only first returned row and column value used.
+        info_hash_count_query: SELECT COUNT(DISTINCT info_hash) as info_hashes FROM mo_peers
+        # The interval at which metrics about the number of info hashes and peers
+        # are collected and posted to Prometheus.
+        prometheus_reporting_interval: 1s
+```
+
+You can use own database structure and queries, but queries should have
+same behaviour and arguments as provided in example above.
@@ -35,8 +35,11 @@ mochi:
      # To avoid churn, keep this slightly larger than `announce_interval`
      peer_lifetime: 31m

-      # The address of redis storage.
-      redis_broker: "redis://pwd@127.0.0.1:6379/0"
+      # The addresses of redis storage.
+      addresses: ["127.0.0.1:6379"]
+      
+      # Database number
+      db: 0

      # The timeout for reading a command reply from redis.
      read_timeout: 15s
@@ -311,7 +311,7 @@ func (f *Frontend) scrapeRoute(w http.ResponseWriter, r *http.Request, ps httpro
 func (f Frontend) ping(w http.ResponseWriter, r *http.Request, _ httprouter.Params) {
 	var err error
 	if r.Method == http.MethodGet {
-		err = f.logic.Ping(context.Background())
+		err = f.logic.Ping(context.TODO())
 	}
 	if err == nil {
 		w.WriteHeader(http.StatusOK)
@@ -3,18 +3,19 @@ module github.com/sot-tech/mochi
 go 1.18

 require (
-	code.cloudfoundry.org/go-diodes v0.0.0-20220420211542-53509ccdf174
+	code.cloudfoundry.org/go-diodes v0.0.0-20220601181242-ac2da19efd60
 	github.com/SermoDigital/jose v0.9.2-0.20180104203859-803625baeddc
-	github.com/anacrolix/torrent v1.44.0
+	github.com/anacrolix/torrent v1.45.0
 	github.com/go-redis/redis/v8 v8.11.5
+	github.com/jackc/pgx/v4 v4.16.1
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/mendsley/gojwk v0.0.0-20141217222730-4d5ec6e58103
 	github.com/minio/sha256-simd v1.0.0
 	github.com/mitchellh/mapstructure v1.5.0
 	github.com/pkg/errors v0.9.1
 	github.com/prometheus/client_golang v1.12.2
-	github.com/rs/zerolog v1.26.1
-	github.com/stretchr/testify v1.7.1
+	github.com/rs/zerolog v1.27.0
+	github.com/stretchr/testify v1.7.4
 	gopkg.in/yaml.v3 v3.0.1
 )

@@ -31,12 +32,24 @@ require (
 	github.com/fsnotify/fsnotify v1.5.4 // indirect
 	github.com/golang/protobuf v1.5.2 // indirect
 	github.com/huandu/xstrings v1.3.2 // indirect
-	github.com/klauspost/cpuid/v2 v2.0.12 // indirect
+	github.com/jackc/chunkreader/v2 v2.0.1 // indirect
+	github.com/jackc/pgconn v1.12.1 // indirect
+	github.com/jackc/pgio v1.0.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgproto3/v2 v2.3.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20200714003250-2b9c44734f2b // indirect
+	github.com/jackc/pgtype v1.11.0 // indirect
+	github.com/jackc/puddle v1.2.1 // indirect
+	github.com/klauspost/cpuid/v2 v2.0.14 // indirect
+	github.com/mattn/go-colorable v0.1.12 // indirect
+	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/prometheus/client_model v0.2.0 // indirect
-	github.com/prometheus/common v0.34.0 // indirect
+	github.com/prometheus/common v0.35.0 // indirect
 	github.com/prometheus/procfs v0.7.3 // indirect
-	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
+	golang.org/x/crypto v0.0.0-20220525230936-793ad666bf5e // indirect
+	golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c // indirect
+	golang.org/x/text v0.3.7 // indirect
 	google.golang.org/protobuf v1.28.0 // indirect
 )
@@ -30,13 +30,14 @@ cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0Zeo
 cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
 cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
 cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
-code.cloudfoundry.org/go-diodes v0.0.0-20220420211542-53509ccdf174 h1:Ht2zKWftukU3F3ACIdE8asNhso3DgHPzaCDO2K5SWmA=
-code.cloudfoundry.org/go-diodes v0.0.0-20220420211542-53509ccdf174/go.mod h1:HLP7HKUU1eqMAGMk247yT91tDDi4xxnehkyXh6hGcr0=
+code.cloudfoundry.org/go-diodes v0.0.0-20220601181242-ac2da19efd60 h1:hBycJRDauXKMEAOl90iFjTqrQ4VNGb918x3lLLDXBBU=
+code.cloudfoundry.org/go-diodes v0.0.0-20220601181242-ac2da19efd60/go.mod h1:HLP7HKUU1eqMAGMk247yT91tDDi4xxnehkyXh6hGcr0=
 crawshaw.io/iox v0.0.0-20181124134642-c51c3df30797/go.mod h1:sXBiorCo8c46JlQV3oXPKINnZ8mcqnye1EkVkqsectk=
 crawshaw.io/sqlite v0.3.2/go.mod h1:igAO5JulrQ1DbdZdtVq48mnZUBAPOeFzer7VhDWNtW4=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
+github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
 github.com/RoaringBitmap/roaring v0.4.7/go.mod h1:8khRDP4HmeXns4xIj9oGrKSz7XTQiJx2zgh7AcNke4w=
 github.com/RoaringBitmap/roaring v0.4.17/go.mod h1:D3qVegWTmfCaX4Bl5CrBE9hfrSrrXIr8KVNvRsDi1NI=
 github.com/RoaringBitmap/roaring v0.4.23/go.mod h1:D0gp8kJQgE1A4LQ5wFLggQEyvDi06Mq5mKs52e1TwOo=
@@ -73,8 +74,8 @@ github.com/anacrolix/stm v0.2.0/go.mod h1:zoVQRvSiGjGoTmbM0vSLIiaKjWtNPeTvXUSdJQ
 github.com/anacrolix/tagflag v0.0.0-20180109131632-2146c8d41bf0/go.mod h1:1m2U/K6ZT+JZG0+bdMK6qauP49QT4wE5pmhJXOKKCHw=
 github.com/anacrolix/tagflag v1.0.0/go.mod h1:1m2U/K6ZT+JZG0+bdMK6qauP49QT4wE5pmhJXOKKCHw=
 github.com/anacrolix/tagflag v1.1.0/go.mod h1:Scxs9CV10NQatSmbyjqmqmeQNwGzlNe0CMUMIxqHIG8=
-github.com/anacrolix/torrent v1.44.0 h1:Yl58hCsX+4O7me5oUWQphg0G46bs22hJWLdEYAq250w=
-github.com/anacrolix/torrent v1.44.0/go.mod h1:SsvA8hlN3q1gC1Pf+fJ7QrfWI+5DumO6tEl4bqf+D2U=
+github.com/anacrolix/torrent v1.45.0 h1:dmRfw+kSl+UtBk2gAOpJgdnu3OzWsSmE6sMTunifpdw=
+github.com/anacrolix/torrent v1.45.0/go.mod h1:511SlHgyD0LAeN5CIJw8CSfS4BaBVDtfVkRSMHPjfAQ=
 github.com/apache/thrift v0.12.0/go.mod h1:cp2SuWMxlEZw2r+iP2GNCdIi4C1qmUzdZFSVb+bacwQ=
 github.com/benbjohnson/immutable v0.2.0/go.mod h1:uc6OHo6PN2++n98KHLxW8ef4W42ylHiQSENghE1ezxI=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
@@ -94,7 +95,12 @@ github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5P
 github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
 github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
 github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
-github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/cockroachdb/apd v1.1.0 h1:3LFP3629v+1aKXU5Q37mxmRxX/pIu1nijXydLShEq5I=
+github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/go-systemd/v22 v22.3.3-0.20220203105225-a9a7ef127534/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
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+github.com/prometheus/common v0.35.0/go.mod h1:phzohg0JFMnBEFGxTDbfu3QyL5GI8gTQJFhYO5B3mfA=
 github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.0-20190117184657-bf6a532e95b1/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
 github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
@@ -306,11 +378,19 @@ github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFR
 github.com/rogpeppe/go-internal v1.6.1/go.mod h1:xXDCJY+GAPziupqXw64V24skbSoqbTEfhy4qGm1nDQc=
 github.com/rogpeppe/go-internal v1.8.0 h1:FCbCCtXNOY3UtUuHUYaghJg4y7Fd14rXifAYUAtL9R8=
 github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE=
+github.com/rs/xid v1.2.1/go.mod h1:+uKXf+4Djp6Md1KODXJxgGQPKngRmWyn10oCKFzNHOQ=
 github.com/rs/xid v1.3.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
-github.com/rs/zerolog v1.26.1 h1:/ihwxqH+4z8UxyI70wM1z9yCvkWcfz/a3mj48k/Zngc=
-github.com/rs/zerolog v1.26.1/go.mod h1:/wSSJWX7lVrsOwlbyTRSOJvqRlc+WjWlfes+CiJ+tmc=
+github.com/rs/zerolog v1.13.0/go.mod h1:YbFCdg8HfsridGWAh22vktObvhZbQsZXe4/zB0OKkWU=
+github.com/rs/zerolog v1.15.0/go.mod h1:xYTKnLHcpfU2225ny5qZjxnj9NvkumZYjJHlAThCjNc=
+github.com/rs/zerolog v1.27.0 h1:1T7qCieN22GVc8S4Q2yuexzBb1EqjbgjSH9RohbMjKs=
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 github.com/ryszard/goskiplist v0.0.0-20150312221310-2dfbae5fcf46/go.mod h1:uAQ5PCi+MFsC7HjREoAz1BU+Mq60+05gifQSsHSDG/8=
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+github.com/shopspring/decimal v0.0.0-20180709203117-cd690d0c9e24/go.mod h1:M+9NzErvs504Cn4c5DxATwIqPbtswREoFCre64PpcG4=
+github.com/shopspring/decimal v1.2.0 h1:abSATXmQEYyShuxI4/vyW3tV1MrKAJzCZ/0zLUXYbsQ=
+github.com/shopspring/decimal v1.2.0/go.mod h1:DKyhrW/HYNuLGql+MJL6WCR6knT2jwCFRcu2hWCYk4o=
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
+github.com/sirupsen/logrus v1.4.1/go.mod h1:ni0Sbl8bgC9z8RoU9G6nDWqqs/fq4eDPysMBDgk/93Q=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
 github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
 github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
@@ -319,13 +399,17 @@ github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c/go.mod h1:X
 github.com/smartystreets/goconvey v0.0.0-20190306220146-200a235640ff/go.mod h1:KSQcGKpxUMHk3nbYzs/tIBAM2iDooCn0BmttHOJEbLs=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.2.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/testify v1.2.1/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.1 h1:5TQK59W5E3v0r2duFAb7P95B6hEeOyEnHRa8MjYSMTY=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.4 h1:wZRexSlwd7ZXfKINDLsO4r7WBt3gTKONc6K/VesHvHM=
+github.com/stretchr/testify v1.7.4/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
 github.com/tinylib/msgp v1.0.2/go.mod h1:+d+yLhGm8mzTaHzB+wgMYrodPfmZrzkirds8fDWklFE=
 github.com/tinylib/msgp v1.1.0/go.mod h1:+d+yLhGm8mzTaHzB+wgMYrodPfmZrzkirds8fDWklFE=
 github.com/tinylib/msgp v1.1.2/go.mod h1:+d+yLhGm8mzTaHzB+wgMYrodPfmZrzkirds8fDWklFE=
@@ -334,7 +418,7 @@ github.com/willf/bitset v1.1.10/go.mod h1:RjeCKbqT1RxIR/KWY6phxZiaY1IyutSBfGjNPy
 github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-github.com/yuin/goldmark v1.4.0/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+github.com/zenazn/goji v0.9.0/go.mod h1:7S9M489iMyHBNxwZnk9/EHS098H4/F6TATF2mIxtB1Q=
 go.opencensus.io v0.20.1/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
 go.opencensus.io v0.20.2/go.mod h1:6WKK9ahsWS3RSO+PY9ZHZUfv2irvY6gN279GOPZjmmk=
 go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
@@ -342,13 +426,30 @@ go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
 go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
 go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
+go.uber.org/atomic v1.3.2/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
+go.uber.org/atomic v1.4.0/go.mod h1:gD2HeocX3+yG+ygLZcrzQJaqmWj9AIm7n08wl/qW/PE=
+go.uber.org/atomic v1.5.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
+go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
+go.uber.org/multierr v1.1.0/go.mod h1:wR5kodmAFQ0UK8QlbwjlSNy0Z68gJhDJUG5sjR94q/0=
+go.uber.org/multierr v1.3.0/go.mod h1:VgVr7evmIr6uPjLBxg28wmKNXyqE9akIJ5XnfpiKl+4=
+go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=
+go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
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+go.uber.org/zap v1.13.0/go.mod h1:zwrFLgMcdUuIBviXEYEH1YKNaOBnKXsx2IPda5bBwHM=
 golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
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 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -379,7 +480,6 @@ golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzB
 golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
 golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
@@ -396,6 +496,7 @@ golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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 golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
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@@ -412,7 +513,6 @@ golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81R
 golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
 golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
-golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/net v0.0.0-20220127200216-cd36cc0744dd/go.mod h1:CfG3xpIq0wQ8r1q4Su4UZFWDARRcnwPjda9FqA0JpMk=
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@@ -432,14 +532,15 @@ golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJ
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 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -447,11 +548,14 @@ golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -472,12 +576,14 @@ golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210927094055-39ccf1dd6fa6/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220412211240-33da011f77ad/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a h1:dGzPydgVsqGcTRVwiLJ1jVbufYwmzD3LfVPLKsKg+0k=
-golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c h1:aFV+BgZ4svzjfabn8ERpuB4JI4N6/rdy1iusx77G3oU=
+golang.org/x/sys v0.0.0-20220615213510-4f61da869c0c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201117132131-f5c789dd3221/go.mod h1:Nr5EML6q2oocZ2LXRh80K7BxOlk5/8JxuGnuhpl+muw=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
 golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
@@ -485,6 +591,7 @@ golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.4/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.3.7 h1:olpwvP2KacW1ZWvsR7uQhoyTYvKAupfQrRGBFM352Gk=
 golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
@@ -499,14 +606,18 @@ golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3
 golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
+golang.org/x/tools v0.0.0-20190425163242-31fd60d6bfdc/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190506145303-2d16b83fe98c/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
 golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
 golang.org/x/tools v0.0.0-20190816200558-6889da9d5479/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20190823170909-c4a336ef6a2f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191115202509-3a792d9c32b2/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
@@ -514,6 +625,7 @@ golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191216173652-a0e659d51361/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20191227053925-7b8e75db28f4/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20200103221440-774c71fcf114/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200117161641-43d50277825c/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200122220014-bf1340f18c4a/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
@@ -532,7 +644,8 @@ golang.org/x/tools v0.0.0-20200618134242-20370b0cb4b2/go.mod h1:EkVYQZoAsY45+roY
 golang.org/x/tools v0.0.0-20200729194436-6467de6f59a7/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
 golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
-golang.org/x/tools v0.1.7/go.mod h1:LGqMHiF4EqQNHR1JncWGqT5BVaXmza+X+BDGol+dOxo=
+golang.org/x/xerrors v0.0.0-20190410155217-1f06c39b4373/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -624,6 +737,7 @@ gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogR
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
 gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
+gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
 gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
@@ -180,7 +180,7 @@ func (h *responseHook) appendPeers(req *bittorrent.AnnounceRequest, resp *bittor
 	}

 	l := len(peers)
-	uniquePeers := make(map[bittorrent.Peer]interface{}, l)
+	uniquePeers := make(map[bittorrent.Peer]any, l)

 	resp.IPv4Peers = make([]bittorrent.Peer, 0, l/2)
 	resp.IPv6Peers = make([]bittorrent.Peer, 0, l/2)
@@ -181,14 +181,14 @@ func (l *Logger) Log() *zerolog.Event {

 // Print sends a log event using debug level and no extra field.
 // Arguments are handled in the manner of fmt.Print.
-func (l *Logger) Print(v ...interface{}) {
+func (l *Logger) Print(v ...any) {
 	l.init()
 	l.Logger.Print(v...)
 }

 // Printf sends a log event using debug level and no extra field.
 // Arguments are handled in the manner of fmt.Printf.
-func (l *Logger) Printf(format string, v ...interface{}) {
+func (l *Logger) Printf(format string, v ...any) {
 	l.init()
 	l.Logger.Printf(format, v...)
 }
@@ -276,13 +276,13 @@ func Log() *zerolog.Event {

 // Print sends a log event using debug level and no extra field.
 // Arguments are handled in the manner of fmt.Print.
-func Print(v ...interface{}) {
+func Print(v ...any) {
 	root.Print(v...)
 }

 // Printf sends a log event using debug level and no extra field.
 // Arguments are handled in the manner of fmt.Printf.
-func Printf(format string, v ...interface{}) {
+func Printf(format string, v ...any) {
 	root.Printf(format, v...)
 }

@@ -12,6 +12,7 @@ package keydb
 import (
 	"context"
 	"errors"
+	"time"

 	"github.com/go-redis/redis/v8"
 	"github.com/rs/zerolog"
@@ -32,9 +33,9 @@ const (

 var (
 	logger = log.NewLogger(Name)
-	// ErrNotKeyDB returned from initializer if connected does not support KeyDB
+	// errNotKeyDB returned from initializer if connected does not support KeyDB
 	// specific command (EXPIREMEMBER)
-	ErrNotKeyDB = errors.New("provided instance seems not KeyDB")
+	errNotKeyDB = errors.New("provided instance seems not KeyDB")
 )

 func init() {
@@ -69,7 +70,7 @@ func newStore(cfg r.Config) (*store, error) {
 	_ = rs.Process(context.Background(), cmd)
 	err = r.AsNil(cmd.Err())
 	if err == nil && len(cmd.Val()) == 0 {
-		err = ErrNotKeyDB
+		err = errNotKeyDB
 	}

 	var st *store
@@ -158,15 +159,15 @@ func (s store) GraduateLeecher(ih bittorrent.InfoHash, peer bittorrent.Peer) (er
 }

 // AnnouncePeers is the same function as redis.AnnouncePeers
-func (s store) AnnouncePeers(ih bittorrent.InfoHash, seeder bool, numWant int, v6 bool) ([]bittorrent.Peer, error) {
+func (s store) AnnouncePeers(ih bittorrent.InfoHash, forSeeder bool, numWant int, v6 bool) ([]bittorrent.Peer, error) {
 	logger.Trace().
 		Stringer("infoHash", ih).
-		Bool("seeder", seeder).
+		Bool("forSeeder", forSeeder).
 		Int("numWant", numWant).
 		Bool("v6", v6).
 		Msg("announce peers")

-	return s.GetPeers(ih, seeder, numWant, v6, func(ctx context.Context, infoHashKey string, maxCount int) *redis.StringSliceCmd {
+	return s.GetPeers(ih, forSeeder, numWant, v6, func(ctx context.Context, infoHashKey string, maxCount int) *redis.StringSliceCmd {
 		return s.SRandMemberN(context.TODO(), infoHashKey, int64(maxCount))
 	})
 }
@@ -180,6 +181,18 @@ func (s store) ScrapeSwarm(ih bittorrent.InfoHash) (leechers uint32, seeders uin
 	return
 }

+func (store) GCAware() bool {
+	return false
+}
+
+func (store) ScheduleGC(_, _ time.Duration) {}
+
+func (store) StatisticsAware() bool {
+	return false
+}
+
+func (store) ScheduleStatisticsCollection(_ time.Duration) {}
+
 func (s *store) Stop() stop.Result {
 	c := make(stop.Channel)
 	if s.UniversalClient != nil {
@@ -390,7 +390,7 @@ func (ps *peerStore) getPeers(shard *peerShard, ih bittorrent.InfoHash, maxCount
 	return
 }

-func (ps *peerStore) AnnouncePeers(ih bittorrent.InfoHash, seeder bool, numWant int, v6 bool) (peers []bittorrent.Peer, err error) {
+func (ps *peerStore) AnnouncePeers(ih bittorrent.InfoHash, forSeeder bool, numWant int, v6 bool) (peers []bittorrent.Peer, err error) {
 	select {
 	case <-ps.closed:
 		panic("attempted to interact with stopped memory store")
@@ -398,12 +398,12 @@ func (ps *peerStore) AnnouncePeers(ih bittorrent.InfoHash, seeder bool, numWant
 	}
 	logger.Trace().
 		Stringer("infoHash", ih).
-		Bool("seeder", seeder).
+		Bool("forSeeder", forSeeder).
 		Int("numWant", numWant).
 		Bool("v6", v6).
 		Msg("announce peers")

-	peers = ps.getPeers(ps.shards[ps.shardIndex(ih, v6)], ih, numWant, seeder)
+	peers = ps.getPeers(ps.shards[ps.shardIndex(ih, v6)], ih, numWant, forSeeder)

 	return
 }
@@ -499,6 +499,14 @@ func (*dataStore) Preservable() bool {
 	return false
 }

+func (*peerStore) GCAware() bool {
+	return true
+}
+
+func (*peerStore) StatisticsAware() bool {
+	return true
+}
+
 // GC deletes all Peers from the PeerStorage which are older than the
 // cutoff time.
 //
@@ -0,0 +1,588 @@
+package pg
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"net"
+	"net/netip"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/jackc/pgx/v4"
+	"github.com/jackc/pgx/v4/log/zerologadapter"
+	"github.com/jackc/pgx/v4/pgxpool"
+	"github.com/rs/zerolog"
+
+	"github.com/sot-tech/mochi/bittorrent"
+	"github.com/sot-tech/mochi/pkg/conf"
+	"github.com/sot-tech/mochi/pkg/log"
+	"github.com/sot-tech/mochi/pkg/metrics"
+	"github.com/sot-tech/mochi/pkg/stop"
+	"github.com/sot-tech/mochi/pkg/timecache"
+	"github.com/sot-tech/mochi/storage"
+)
+
+const (
+	// Name is the name by which this peer store is registered with Conf.
+	Name = "pg"
+
+	defaultPingQuery = "SELECT 0"
+
+	errRequiredParameterNotSetMsg = "required parameter not provided: %s"
+	errRequiredColumnsNotFoundMsg = "one or more required columns not found in result set: %v"
+	errRollBackMsg                = "error occurred while rolling back failed query: %v, failed query error: %v"
+)
+
+var (
+	logger = log.NewLogger(Name)
+
+	errConnectionStringNotProvided = errors.New("database connection string not provided")
+)
+
+func init() {
+	// Register the storage builder.
+	storage.RegisterBuilder(Name, builder)
+}
+
+func builder(icfg conf.MapConfig) (storage.PeerStorage, error) {
+	var cfg Config
+
+	if err := icfg.Unmarshal(&cfg); err != nil {
+		return nil, err
+	}
+
+	return newStore(cfg)
+}
+
+func newStore(cfg Config) (storage.PeerStorage, error) {
+	cfg, err := cfg.Validate()
+	if err != nil {
+		return nil, err
+	}
+
+	pgConf, err := pgxpool.ParseConfig(cfg.ConnectionString)
+	if err != nil {
+		return nil, err
+	}
+
+	pgConf.ConnConfig.Logger = zerologadapter.NewLogger(logger.Logger)
+	con, err := pgxpool.Connect(context.Background(), cfg.ConnectionString)
+	if err != nil {
+		return nil, err
+	}
+
+	return &store{Config: cfg, Pool: con, wg: sync.WaitGroup{}, closed: make(chan any)}, nil
+}
+
+type peerQueryConf struct {
+	AddQuery            string `cfg:"add_query"`
+	DelQuery            string `cfg:"del_query"`
+	GraduateQuery       string `cfg:"graduate_query"`
+	CountQuery          string `cfg:"count_query"`
+	CountSeedersColumn  string `cfg:"count_seeders_column"`
+	CountLeechersColumn string `cfg:"count_leechers_column"`
+	ByInfoHashClause    string `cfg:"by_info_hash_clause"`
+}
+
+type announceQueryConf struct {
+	Query         string
+	PeerIDColumn  string `cfg:"peer_id_column"`
+	AddressColumn string `cfg:"address_column"`
+	PortColumn    string `cfg:"port_column"`
+}
+
+type dataQueryConf struct {
+	AddQuery string `cfg:"add_query"`
+	GetQuery string `cfg:"get_query"`
+	DelQuery string `cfg:"del_query"`
+}
+
+// Config holds the configuration of a redis PeerStorage.
+type Config struct {
+	ConnectionString   string `cfg:"connection_string"`
+	PingQuery          string `cfg:"ping_query"`
+	Peer               peerQueryConf
+	Announce           announceQueryConf
+	Data               dataQueryConf
+	GCQuery            string `cfg:"gc_query"`
+	InfoHashCountQuery string `cfg:"info_hash_count_query"`
+}
+
+// MarshalZerologObject writes configuration fields into zerolog event
+func (cfg Config) MarshalZerologObject(e *zerolog.Event) {
+	e.Str("connectionString", "<hidden>").
+		Str("pingQuery", cfg.PingQuery).
+		Str("peer.addQuery", cfg.Peer.AddQuery).
+		Str("peer.delQuery", cfg.Peer.DelQuery).
+		Str("peer.graduateQuery", cfg.Peer.GraduateQuery).
+		Str("peer.countQuery", cfg.Peer.CountQuery).
+		Str("peer.countSeedersColumn", cfg.Peer.CountSeedersColumn).
+		Str("peer.countLeechersColumn", cfg.Peer.CountLeechersColumn).
+		Str("peer.byInfoHashClause", cfg.Peer.ByInfoHashClause).
+		Str("announce.query", cfg.Announce.Query).
+		Str("announce.peerIDColumn", cfg.Announce.PeerIDColumn).
+		Str("announce.addressColumn", cfg.Announce.AddressColumn).
+		Str("announce.portColumn", cfg.Announce.PortColumn).
+		Str("data.addQuery", cfg.Data.AddQuery).
+		Str("data.getQuery", cfg.Data.GetQuery).
+		Str("data.delQuery", cfg.Data.DelQuery).
+		Str("gcQuery", cfg.GCQuery).
+		Str("infoHashCountQuery", cfg.InfoHashCountQuery)
+}
+
+// Validate sanity checks values set in a config and returns a new config with
+// default values replacing anything that is invalid.
+//
+// This function warns to the logger when a value is changed.
+func (cfg Config) Validate() (Config, error) {
+	validCfg := cfg
+	validCfg.ConnectionString = strings.TrimSpace(validCfg.ConnectionString)
+	if len(validCfg.ConnectionString) == 0 {
+		return cfg, errConnectionStringNotProvided
+	}
+
+	if len(cfg.PingQuery) == 0 {
+		validCfg.PingQuery = defaultPingQuery
+		logger.Warn().
+			Str("name", "PingQuery").
+			Str("provided", cfg.PingQuery).
+			Str("default", validCfg.PingQuery).
+			Msg("falling back to default configuration")
+	}
+
+	fn := func(p *string, name string) (err error) {
+		if *p = strings.TrimSpace(*p); len(*p) == 0 {
+			err = fmt.Errorf(errRequiredParameterNotSetMsg, name)
+		}
+		return
+	}
+
+	if err := fn(&validCfg.Peer.AddQuery, "peer.addQuery"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Peer.DelQuery, "peer.aelQuery"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Peer.GraduateQuery, "peer.graduateQuery"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Peer.CountQuery, "peer.countQuery"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Peer.CountSeedersColumn, "peer.countSeedersColumn"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Peer.CountLeechersColumn, "peer.countLeechersColumn"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Peer.ByInfoHashClause, "peer.byInfoHashClause"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Announce.Query, "announce.query"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Announce.PeerIDColumn, "announce.peerIDColumn"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Announce.AddressColumn, "announce.addressColumn"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Announce.PortColumn, "announce.portColumn"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Data.AddQuery, "data.addQuery"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Data.GetQuery, "data.getQuery"); err != nil {
+		return cfg, err
+	}
+
+	if err := fn(&validCfg.Data.DelQuery, "data.delQuery"); err != nil {
+		return cfg, err
+	}
+
+	validCfg.Announce.PeerIDColumn = strings.ToUpper(validCfg.Announce.PeerIDColumn)
+	validCfg.Announce.AddressColumn = strings.ToUpper(validCfg.Announce.AddressColumn)
+	validCfg.Announce.PortColumn = strings.ToUpper(validCfg.Announce.PortColumn)
+
+	validCfg.Peer.CountSeedersColumn = strings.ToUpper(validCfg.Peer.CountSeedersColumn)
+	validCfg.Peer.CountLeechersColumn = strings.ToUpper(validCfg.Peer.CountLeechersColumn)
+
+	return validCfg, nil
+}
+
+type store struct {
+	Config
+	*pgxpool.Pool
+	wg     sync.WaitGroup
+	closed chan any
+}
+
+func (s *store) Put(ctx string, values ...storage.Entry) (err error) {
+	var tx pgx.Tx
+	if tx, err = s.Begin(context.TODO()); err == nil {
+		for _, v := range values {
+			val := v.Value
+			switch tOut := val.(type) {
+			case string:
+				val = []byte(tOut)
+			}
+			if _, err = tx.Exec(context.TODO(), s.Data.AddQuery, ctx, []byte(v.Key), val); err != nil {
+				break
+			}
+		}
+		if err == nil {
+			err = tx.Commit(context.TODO())
+		} else {
+			if txErr := tx.Rollback(context.TODO()); txErr != nil {
+				err = fmt.Errorf(errRollBackMsg, txErr, err)
+			}
+		}
+	}
+	return
+}
+
+func (s *store) Contains(ctx string, key string) (contains bool, err error) {
+	var rows pgx.Rows
+	if rows, err = s.Query(context.TODO(), s.Data.GetQuery, ctx, []byte(key)); err == nil {
+		defer rows.Close()
+		contains = rows.Next()
+	}
+	return
+}
+
+func (s *store) Load(ctx string, key string) (out any, err error) {
+	var rows pgx.Rows
+	if rows, err = s.Query(context.TODO(), s.Data.GetQuery, ctx, []byte(key)); err == nil {
+		defer rows.Close()
+		if rows.Next() {
+			var values []any
+			if values, err = rows.Values(); err == nil && len(values) > 0 {
+				out = values[0]
+				switch tOut := out.(type) {
+				case []byte:
+					out = string(tOut)
+				}
+			}
+		}
+	}
+	return
+}
+
+func (s *store) Delete(ctx string, keys ...string) (err error) {
+	var tx pgx.Tx
+	if tx, err = s.Begin(context.TODO()); err == nil {
+		for _, k := range keys {
+			if _, err = tx.Exec(context.TODO(), s.Data.DelQuery, ctx, []byte(k)); err != nil {
+				break
+			}
+		}
+		if err == nil {
+			err = tx.Commit(context.TODO())
+		} else {
+			if txErr := tx.Rollback(context.TODO()); txErr != nil {
+				err = fmt.Errorf(errRollBackMsg, txErr, err)
+			}
+		}
+	}
+	return
+}
+
+func (s *store) Preservable() bool {
+	return true
+}
+
+func (s *store) GCAware() bool {
+	return len(s.GCQuery) > 0
+}
+
+func (s *store) ScheduleGC(gcInterval, peerLifeTime time.Duration) {
+	s.wg.Add(1)
+	go func() {
+		defer s.wg.Done()
+		t := time.NewTimer(gcInterval)
+		defer t.Stop()
+		for {
+			select {
+			case <-s.closed:
+				return
+			case <-t.C:
+				start := time.Now()
+				_, err := s.Exec(context.Background(), s.GCQuery, time.Now().Add(-peerLifeTime))
+				duration := time.Since(start)
+				if err != nil {
+					logger.Error().Err(err).Msg("error occurred while GC")
+				} else {
+					logger.Debug().Dur("timeTaken", duration).Msg("GC complete")
+				}
+				storage.PromGCDurationMilliseconds.Observe(float64(duration.Milliseconds()))
+				t.Reset(gcInterval)
+			}
+		}
+	}()
+}
+
+func (s *store) StatisticsAware() bool {
+	return len(s.InfoHashCountQuery) > 0
+}
+
+func (s *store) ScheduleStatisticsCollection(reportInterval time.Duration) {
+	s.wg.Add(1)
+	go func() {
+		defer s.wg.Done()
+		t := time.NewTicker(reportInterval)
+		for {
+			select {
+			case <-s.closed:
+				t.Stop()
+				return
+			case <-t.C:
+				if metrics.Enabled() {
+					before := time.Now()
+					sc, lc := s.countPeers(bittorrent.NoneInfoHash)
+					var hc int
+					row := s.QueryRow(context.Background(), s.InfoHashCountQuery)
+					if err := row.Scan(&hc); err != nil && !errors.Is(err, pgx.ErrNoRows) {
+						logger.Error().Err(err).Msg("error occurred while get info hash count")
+					}
+
+					storage.PromInfoHashesCount.Set(float64(hc))
+					storage.PromSeedersCount.Set(float64(sc))
+					storage.PromLeechersCount.Set(float64(lc))
+					logger.Debug().TimeDiff("timeTaken", time.Now(), before).Msg("populate prom complete")
+				}
+			}
+		}
+	}()
+}
+
+func (s *store) putPeer(ih bittorrent.InfoHash, peer bittorrent.Peer, seeder bool) error {
+	logger.Trace().
+		Stringer("infoHash", ih).
+		Object("peer", peer).
+		Bool("seeder", seeder).
+		Msg("put peer")
+	args := []any{[]byte(ih), peer.ID[:], net.IP(peer.Addr().AsSlice()), peer.Port(), seeder, peer.Addr().Is6()}
+	if s.GCAware() {
+		args = append(args, timecache.Now())
+	}
+	_, err := s.Exec(context.TODO(), s.Peer.AddQuery, args...)
+	return err
+}
+
+func (s *store) delPeer(ih bittorrent.InfoHash, peer bittorrent.Peer, seeder bool) error {
+	logger.Trace().
+		Stringer("infoHash", ih).
+		Object("peer", peer).
+		Msg("del peer")
+	_, err := s.Exec(context.TODO(), s.Peer.DelQuery, []byte(ih), peer.ID[:], net.IP(peer.Addr().AsSlice()), peer.Port(), seeder)
+	return err
+}
+
+func (s *store) PutSeeder(ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+	return s.putPeer(ih, peer, true)
+}
+
+func (s *store) DeleteSeeder(ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+	return s.delPeer(ih, peer, true)
+}
+
+func (s *store) PutLeecher(ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+	return s.putPeer(ih, peer, false)
+}
+
+func (s *store) DeleteLeecher(ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+	return s.delPeer(ih, peer, false)
+}
+
+func (s *store) GraduateLeecher(ih bittorrent.InfoHash, peer bittorrent.Peer) error {
+	logger.Trace().
+		Stringer("infoHash", ih).
+		Object("peer", peer).
+		Msg("graduate leecher")
+	_, err := s.Exec(context.TODO(), s.Peer.GraduateQuery, []byte(ih), peer.ID[:], net.IP(peer.Addr().AsSlice()), peer.Port())
+	return err
+}
+
+func (s *store) getPeers(ih bittorrent.InfoHash, seeders bool, maxCount int, isV6 bool) (peers []bittorrent.Peer, err error) {
+	var rows pgx.Rows
+	if rows, err = s.Query(context.TODO(), s.Announce.Query, []byte(ih), seeders, isV6, maxCount); err == nil {
+		defer rows.Close()
+		idIndex, ipIndex, portIndex := -1, -1, -1
+		for i, field := range rows.FieldDescriptions() {
+			name := strings.ToUpper(string(field.Name))
+			switch name {
+			case s.Announce.PeerIDColumn:
+				idIndex = i
+			case s.Announce.AddressColumn:
+				ipIndex = i
+			case s.Announce.PortColumn:
+				portIndex = i
+			}
+		}
+		if idIndex < 0 || ipIndex < 0 || portIndex < 0 {
+			err = fmt.Errorf(errRequiredColumnsNotFoundMsg, []string{s.Announce.PeerIDColumn, s.Announce.AddressColumn, s.Announce.PortColumn})
+			return
+		}
+		var maxIndex int
+		switch {
+		case idIndex >= ipIndex && idIndex >= portIndex:
+			maxIndex = idIndex
+		case ipIndex >= idIndex && ipIndex >= portIndex:
+			maxIndex = ipIndex
+		case portIndex >= idIndex && portIndex >= ipIndex:
+			maxIndex = portIndex
+		}
+
+		for rows.Next() && len(peers) < maxCount {
+			var peer bittorrent.Peer
+			var id []byte
+			var ip net.IP
+			var port int
+			into := make([]any, maxIndex+1)
+			into[idIndex], into[ipIndex], into[portIndex] = &id, &ip, &port
+
+			if err = rows.Scan(into...); err == nil {
+				if peer.ID, err = bittorrent.NewPeerID(id); err == nil {
+					if netAddr, isOk := netip.AddrFromSlice(ip); isOk {
+						peer.AddrPort = netip.AddrPortFrom(netAddr, uint16(port))
+					} else {
+						err = bittorrent.ErrInvalidIP
+					}
+				}
+			}
+			if err == nil {
+				peers = append(peers, peer)
+			} else {
+				logger.Warn().
+					Err(err).
+					Bytes("peerID", id).
+					IPAddr("ip", ip).
+					Int("port", port).
+					Msg("unable to scan/construct peer")
+			}
+		}
+	}
+	return
+}
+
+func (s *store) AnnouncePeers(ih bittorrent.InfoHash, forSeeder bool, numWant int, v6 bool) (peers []bittorrent.Peer, err error) {
+	logger.Trace().
+		Stringer("infoHash", ih).
+		Bool("forSeeder", forSeeder).
+		Int("numWant", numWant).
+		Bool("v6", v6).
+		Msg("announce peers")
+	if forSeeder {
+		peers, err = s.getPeers(ih, false, numWant, v6)
+	} else {
+		if peers, err = s.getPeers(ih, true, numWant, v6); err == nil {
+			var addPeers []bittorrent.Peer
+			addPeers, err = s.getPeers(ih, false, numWant-len(peers), v6)
+			peers = append(peers, addPeers...)
+		}
+	}
+
+	if l := len(peers); err == nil {
+		if l == 0 {
+			err = storage.ErrResourceDoesNotExist
+		}
+	} else if l > 0 {
+		err = nil
+		logger.Warn().Err(err).Stringer("infoHash", ih).Msg("error occurred while retrieving peers")
+	}
+
+	return
+}
+
+func (s *store) countPeers(ih bittorrent.InfoHash) (seeders int, leechers int) {
+	var rows pgx.Rows
+	var err error
+	if ih == bittorrent.NoneInfoHash {
+		rows, err = s.Query(context.TODO(), s.Peer.CountQuery)
+	} else {
+		rows, err = s.Query(context.TODO(), s.Peer.CountQuery+" "+s.Peer.ByInfoHashClause, []byte(ih))
+	}
+	if err == nil {
+		defer rows.Close()
+		if rows.Next() {
+			si, li := -1, -1
+			for i, field := range rows.FieldDescriptions() {
+				name := strings.ToUpper(string(field.Name))
+				switch name {
+				case s.Peer.CountSeedersColumn:
+					si = i
+				case s.Peer.CountLeechersColumn:
+					li = i
+				}
+			}
+			if si < 0 || li < 0 {
+				err = fmt.Errorf(errRequiredColumnsNotFoundMsg, []string{s.Peer.CountSeedersColumn, s.Peer.CountLeechersColumn})
+			} else {
+				var mi int
+				if si > li {
+					mi = si
+				} else {
+					mi = li
+				}
+				into := make([]any, mi+1)
+				into[si], into[li] = &seeders, &leechers
+
+				err = rows.Scan(into...)
+			}
+		}
+	}
+	if err != nil {
+		logger.Error().Err(err).Stringer("infoHash", ih).Msg("unable to get peers count")
+	}
+	return
+}
+
+func (s *store) ScrapeSwarm(ih bittorrent.InfoHash) (leechers uint32, seeders uint32, snatched uint32) {
+	logger.Trace().
+		Stringer("infoHash", ih).
+		Msg("scrape swarm")
+	sc, lc := s.countPeers(ih)
+	seeders, leechers = uint32(sc), uint32(lc)
+	return
+}
+
+func (s *store) Ping() error {
+	_, err := s.Exec(context.TODO(), s.PingQuery)
+	return err
+}
+
+func (s *store) Stop() stop.Result {
+	c := make(stop.Channel)
+	go func() {
+		if s.closed != nil {
+			close(s.closed)
+		}
+		s.wg.Wait()
+		if s.Pool != nil {
+			logger.Info().Msg("pg exiting. mochi does not clear data in database when exiting.")
+			s.Close()
+			s.Pool = nil
+		}
+		c.Done()
+	}()
+	return c.Result()
+}
+
+func (s *store) MarshalZerologObject(e *zerolog.Event) {
+	e.Str("type", Name).Object("config", s.Config)
+}
@@ -0,0 +1,82 @@
+package pg
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	s "github.com/sot-tech/mochi/storage"
+	"github.com/sot-tech/mochi/storage/test"
+)
+
+const (
+	createTablesQuery = `
+DROP TABLE IF EXISTS mo_peers;
+CREATE TABLE mo_peers (
+	info_hash bytea NOT NULL,
+	peer_id bytea NOT NULL,
+	address inet NOT NULL,
+	port int4 NOT NULL,
+	is_seeder bool NOT NULL,
+	is_v6 bool NOT NULL,
+	created timestamp NOT NULL DEFAULT current_timestamp,
+	PRIMARY KEY (info_hash, peer_id, address, port)
+);
+
+CREATE INDEX mo_peers_created_idx ON mo_peers(created);
+CREATE INDEX mo_peers_announce_idx ON mo_peers(info_hash, is_seeder, is_v6);
+
+DROP TABLE IF EXISTS mo_kv;
+CREATE TABLE mo_kv (
+	context varchar NOT NULL,
+	name bytea NOT NULL,
+	value bytea,
+	PRIMARY KEY (context, name)
+);
+`
+)
+
+var cfg = Config{
+	ConnectionString: "host=127.0.0.1 database=test user=postgres pool_max_conns=50",
+	PingQuery:        "SELECT 1",
+	Peer: peerQueryConf{
+		AddQuery:            "INSERT INTO mo_peers VALUES($1, $2, $3, $4, $5, $6, $7) ON CONFLICT (info_hash, peer_id, address, port) DO UPDATE SET created = EXCLUDED.created, is_seeder = EXCLUDED.is_seeder",
+		DelQuery:            "DELETE FROM mo_peers WHERE info_hash=$1 AND peer_id=$2 AND address=$3 AND port=$4 AND is_seeder=$5",
+		GraduateQuery:       "UPDATE mo_peers SET is_seeder=TRUE WHERE info_hash=$1 AND peer_id=$2 AND address=$3 AND port=$4 AND NOT is_seeder",
+		CountQuery:          "SELECT COUNT(1) FILTER (WHERE is_seeder) AS seeders, COUNT(1) FILTER (WHERE NOT is_seeder) AS leechers FROM mo_peers",
+		CountSeedersColumn:  "seeders",
+		CountLeechersColumn: "leechers",
+		ByInfoHashClause:    "WHERE info_hash = $1",
+	},
+	Announce: announceQueryConf{
+		Query:         "SELECT peer_id, address, port FROM mo_peers WHERE info_hash=$1 AND is_seeder=$2 AND is_v6=$3 LIMIT $4",
+		PeerIDColumn:  "peer_id",
+		AddressColumn: "address",
+		PortColumn:    "port",
+	},
+	Data: dataQueryConf{
+		AddQuery: "INSERT INTO mo_kv VALUES($1, $2, $3) ON CONFLICT (context, name) DO NOTHING",
+		GetQuery: "SELECT value FROM mo_kv WHERE context=$1 AND name=$2",
+		DelQuery: "DELETE FROM mo_kv WHERE context=$1 AND name=$2",
+	},
+	GCQuery:            "DELETE FROM mo_peers WHERE created > $1",
+	InfoHashCountQuery: "SELECT COUNT(DISTINCT info_hash) as info_hashes FROM mo_peers",
+}
+
+func createNew() s.PeerStorage {
+	var ps s.PeerStorage
+	var err error
+	ps, err = newStore(cfg)
+	if err != nil {
+		panic(fmt.Sprint("Unable to create PostgreSQL connection: ", err, "\nThis driver needs real PostgreSQL instance"))
+	}
+	pss := ps.(*store)
+	if _, err = pss.Exec(context.Background(), createTablesQuery); err != nil {
+		panic(fmt.Sprint("Unable to create test PostgreSQL tables: ", err))
+	}
+	return ps
+}
+
+func TestStorage(t *testing.T) { test.RunTests(t, createNew()) }
+
+func BenchmarkStorage(b *testing.B) { test.RunBenchmarks(b, createNew) }
@@ -67,8 +67,8 @@ const (

 var (
 	logger = log.NewLogger(Name)
-	// ErrSentinelAndClusterChecked returned from initializer if both Config.Sentinel and Config.Cluster provided
-	ErrSentinelAndClusterChecked = errors.New("unable to use both cluster and sentinel mode")
+	// errSentinelAndClusterChecked returned from initializer if both Config.Sentinel and Config.Cluster provided
+	errSentinelAndClusterChecked = errors.New("unable to use both cluster and sentinel mode")
 )

 func init() {
@@ -141,7 +141,7 @@ func (cfg Config) MarshalZerologObject(e *zerolog.Event) {
 // This function warns to the logger when a value is changed.
 func (cfg Config) Validate() (Config, error) {
 	if cfg.Sentinel && cfg.Cluster {
-		return cfg, ErrSentinelAndClusterChecked
+		return cfg, errSentinelAndClusterChecked
 	}

 	validCfg := cfg
@@ -319,7 +319,7 @@ func (ps *store) count(key string, getLength bool) (n uint64) {
 	}
 	err = AsNil(err)
 	if err != nil {
-		logger.Error().Err(err).Str("key", key).Msg("storage: Redis: GET/SCARD failure")
+		logger.Error().Err(err).Str("key", key).Msg("GET/SCARD failure")
 	}
 	return
 }
@@ -513,15 +513,15 @@ func (ps *Connection) GetPeers(ih bittorrent.InfoHash, forSeeder bool, maxCount
 	return
 }

-func (ps *store) AnnouncePeers(ih bittorrent.InfoHash, seeder bool, numWant int, v6 bool) ([]bittorrent.Peer, error) {
+func (ps *store) AnnouncePeers(ih bittorrent.InfoHash, forSeeder bool, numWant int, v6 bool) ([]bittorrent.Peer, error) {
 	logger.Trace().
 		Stringer("infoHash", ih).
-		Bool("seeder", seeder).
+		Bool("forSeeder", forSeeder).
 		Int("numWant", numWant).
 		Bool("v6", v6).
 		Msg("announce peers")

-	return ps.GetPeers(ih, seeder, numWant, v6, func(ctx context.Context, infoHashKey string, maxCount int) *redis.StringSliceCmd {
+	return ps.GetPeers(ih, forSeeder, numWant, v6, func(ctx context.Context, infoHashKey string, maxCount int) *redis.StringSliceCmd {
 		return ps.HRandField(ctx, infoHashKey, maxCount, false)
 	})
 }
@@ -625,6 +625,14 @@ func (Connection) Preservable() bool {
 	return true
 }

+func (*store) GCAware() bool {
+	return true
+}
+
+func (*store) StatisticsAware() bool {
+	return true
+}
+
 // Ping sends `PING` request to Redis server
 func (ps *Connection) Ping() error {
 	return ps.UniversalClient.Ping(context.TODO()).Err()
@@ -785,7 +793,7 @@ func (ps *store) Stop() stop.Result {
 		ps.wg.Wait()
 		var err error
 		if ps.UniversalClient != nil {
-			logger.Info().Msg("storage: Redis: exiting. mochi does not clear data in redis when exiting. mochi keys have prefix " + PrefixKey)
+			logger.Info().Msg("redis exiting. mochi does not clear data in redis when exiting. mochi keys have prefix " + PrefixKey)
 			err = ps.UniversalClient.Close()
 			ps.UniversalClient = nil
 		}
@@ -11,7 +11,6 @@ import (

 var cfg = Config{
 	Addresses:      []string{"localhost:6379"},
-	PeerLifetime:   30 * time.Minute,
 	ReadTimeout:    10 * time.Second,
 	WriteTimeout:   10 * time.Second,
 	ConnectTimeout: 10 * time.Second,
@@ -22,7 +21,7 @@ func createNew() s.PeerStorage {
 	var err error
 	ps, err = newStore(cfg)
 	if err != nil {
-		panic(fmt.Sprint("Unable to create KeyDB connection: ", err, "\nThis driver needs real Redis instance"))
+		panic(fmt.Sprint("Unable to create Redis connection: ", err, "\nThis driver needs real Redis instance"))
 	}
 	return ps
 }
@@ -115,23 +115,6 @@ type DataStorage interface {
 	Preservable() bool
 }

-// GCAware is the interface for storage that supports periodic
-// stale peers collection
-type GCAware interface {
-	// ScheduleGC used to delete stale data, such as timed out seeders/leechers.
-	// Note: implementation must create subroutine by itself
-	ScheduleGC(gcInterval, peerLifeTime time.Duration)
-}
-
-// StatisticsAware is the interface for storage that supports periodic
-// statistics collection
-type StatisticsAware interface {
-	// ScheduleStatisticsCollection used to receive statistics information about hashes,
-	// seeders and leechers count.
-	// Note: implementation must create subroutine by itself
-	ScheduleStatisticsCollection(reportInterval time.Duration)
-}
-
 // PeerStorage is an interface that abstracts the interactions of storing and
 // manipulating Peers such that it can be implemented for various data stores.
 //
@@ -194,7 +177,7 @@ type PeerStorage interface {
 	//   leechers
 	//
 	// Returns ErrResourceDoesNotExist if the provided InfoHash is not tracked.
-	AnnouncePeers(ih bittorrent.InfoHash, seeder bool, numWant int, v6 bool) (peers []bittorrent.Peer, err error)
+	AnnouncePeers(ih bittorrent.InfoHash, forSeeder bool, numWant int, v6 bool) (peers []bittorrent.Peer, err error)

 	// ScrapeSwarm returns information required to answer a Scrape request
 	// about a Swarm identified by the given InfoHash.
@@ -210,6 +193,23 @@ type PeerStorage interface {
 	// (connection could be established, enough space etc.)
 	Ping() error

+	// GCAware marks that this storage supports periodic
+	// peers collection
+	GCAware() bool
+
+	// ScheduleGC used to delete stale data, such as timed out seeders/leechers.
+	// Note: implementation must create subroutine by itself
+	ScheduleGC(gcInterval, peerLifeTime time.Duration)
+
+	// StatisticsAware marks that this storage supports periodic
+	// statistics collection
+	StatisticsAware() bool
+
+	// ScheduleStatisticsCollection used to receive statistics information about hashes,
+	// seeders and leechers count.
+	// Note: implementation must create subroutine by itself
+	ScheduleStatisticsCollection(reportInterval time.Duration)
+
 	// Stopper is an interface that expects a Stop method to stop the PeerStorage.
 	// For more details see the documentation in the stop package.
 	stop.Stopper
@@ -264,27 +264,27 @@ func NewStorage(name string, cfg conf.MapConfig) (ps PeerStorage, err error) {
 		return
 	}

-	if gc, isOk := ps.(GCAware); isOk {
+	if gc := ps.GCAware(); gc {
 		gcInterval, peerTTL := c.sanitizeGCConfig()
 		logger.Info().
 			Str("type", name).
 			Dur("gcInterval", gcInterval).
 			Dur("peerTTL", peerTTL).
 			Msg("scheduling GC")
-		gc.ScheduleGC(gcInterval, peerTTL)
+		ps.ScheduleGC(gcInterval, peerTTL)
 	} else {
 		logger.Debug().
 			Str("type", name).
 			Msg("storage does not support GC")
 	}

-	if st, isOk := ps.(StatisticsAware); isOk {
+	if st := ps.StatisticsAware(); st {
 		if statInterval := c.sanitizeStatisticsConfig(); statInterval > 0 {
 			logger.Info().
 				Str("type", name).
 				Dur("statInterval", statInterval).
 				Msg("scheduling statistics collection")
-			st.ScheduleStatisticsCollection(statInterval)
+			ps.ScheduleStatisticsCollection(statInterval)
 		} else {
 			logger.Info().Str("type", name).Msg("statistics collection disabled because of zero reporting interval")
 		}
@@ -36,7 +36,7 @@ func generateInfoHashes() (a [ihCount]bittorrent.InfoHash) {
 func generatePeers() (a [peersCount]bittorrent.Peer) {
 	for i := range a {
 		var ip []byte
-		if i < peersCount/2 {
+		if i%2 == 0 {
 			ip = make([]byte, net.IPv4len)
 		} else {
 			ip = make([]byte, net.IPv6len)
@@ -13,6 +13,8 @@ import (
 	"github.com/sot-tech/mochi/storage"
 )

+const kvStoreCtx = "test"
+
 func init() {
 	_ = log.ConfigureLogger("", "warn", false, false)
 }
@@ -39,7 +41,10 @@ type hashPeer struct {
 func (th *testHolder) DeleteSeeder(t *testing.T) {
 	for _, c := range testData {
 		err := th.st.DeleteSeeder(c.ih, c.peer)
-		require.Equal(t, storage.ErrResourceDoesNotExist, err)
+		if errors.Is(err, storage.ErrResourceDoesNotExist) {
+			err = nil
+		}
+		require.Nil(t, err)
 	}
 }

@@ -57,7 +62,10 @@ func (th *testHolder) PutLeecher(t *testing.T) {
 func (th *testHolder) DeleteLeecher(t *testing.T) {
 	for _, c := range testData {
 		err := th.st.DeleteLeecher(c.ih, c.peer)
-		require.Equal(t, storage.ErrResourceDoesNotExist, err)
+		if errors.Is(err, storage.ErrResourceDoesNotExist) {
+			err = nil
+		}
+		require.Nil(t, err)
 	}
 }

@@ -158,7 +166,10 @@ func (th *testHolder) LeecherPutGraduateAnnounceDeleteAnnounce(t *testing.T) {

 		// Deleting the Peer as a Leecher should have no effect
 		err = th.st.DeleteLeecher(c.ih, c.peer)
-		require.Equal(t, storage.ErrResourceDoesNotExist, err)
+		if errors.Is(err, storage.ErrResourceDoesNotExist) {
+			err = nil
+		}
+		require.Nil(t, err)

 		// Verify it's still there
 		peers, err = th.st.AnnouncePeers(c.ih, false, 50, isV6)
@@ -171,23 +182,29 @@ func (th *testHolder) LeecherPutGraduateAnnounceDeleteAnnounce(t *testing.T) {

 		// Test ErrDNE for missing leecher
 		err = th.st.DeleteLeecher(c.ih, peer)
-		require.Equal(t, storage.ErrResourceDoesNotExist, err)
+		if errors.Is(err, storage.ErrResourceDoesNotExist) {
+			err = nil
+		}
+		require.Nil(t, err)

 		err = th.st.DeleteSeeder(c.ih, c.peer)
 		require.Nil(t, err)

 		err = th.st.DeleteSeeder(c.ih, c.peer)
-		require.Equal(t, storage.ErrResourceDoesNotExist, err)
+		if errors.Is(err, storage.ErrResourceDoesNotExist) {
+			err = nil
+		}
+		require.Nil(t, err)
 	}
 }

 func (th *testHolder) CustomPutContainsLoadDelete(t *testing.T) {
 	for _, c := range testData {
-		err := th.st.Put("test", storage.Entry{Key: c.peer.String(), Value: c.ih.RawString()})
+		err := th.st.Put(kvStoreCtx, storage.Entry{Key: c.peer.String(), Value: c.ih.RawString()})
 		require.Nil(t, err)

 		// check if exist in ctx we put
-		contains, err := th.st.Contains("test", c.peer.String())
+		contains, err := th.st.Contains(kvStoreCtx, c.peer.String())
 		require.Nil(t, err)
 		require.True(t, contains)

@@ -197,7 +214,7 @@ func (th *testHolder) CustomPutContainsLoadDelete(t *testing.T) {
 		require.False(t, contains)

 		// check value and type in ctx we put
-		out, err := th.st.Load("test", c.peer.String())
+		out, err := th.st.Load(kvStoreCtx, c.peer.String())
 		require.Nil(t, err)
 		ih, err := bittorrent.NewInfoHash(out)
 		require.Nil(t, err)
@@ -208,10 +225,10 @@ func (th *testHolder) CustomPutContainsLoadDelete(t *testing.T) {
 		require.Nil(t, err)
 		require.Nil(t, dummy)

-		err = th.st.Delete("test", c.peer.String())
+		err = th.st.Delete(kvStoreCtx, c.peer.String())
 		require.Nil(t, err)

-		contains, err = th.st.Contains("peers", c.peer.String())
+		contains, err = th.st.Contains("", c.peer.String())
 		require.Nil(t, err)
 		require.False(t, contains)
 	}
@@ -228,29 +245,29 @@ func (th *testHolder) CustomBulkPutContainsLoadDelete(t *testing.T) {
 			Value: c.ih.RawString(),
 		})
 	}
-	err := th.st.Put("test", pairs...)
+	err := th.st.Put(kvStoreCtx, pairs...)
 	require.Nil(t, err)

 	// check if exist in ctx we put
 	for _, k := range keys {
-		contains, err := th.st.Contains("test", k)
+		contains, err := th.st.Contains(kvStoreCtx, k)
 		require.Nil(t, err)
 		require.True(t, contains)
 	}

 	// check value and type in ctx we put
 	for _, p := range pairs {
-		out, _ := th.st.Load("test", p.Key)
+		out, _ := th.st.Load(kvStoreCtx, p.Key)
 		ih, err := bittorrent.NewInfoHash(out)
 		require.Nil(t, err)
 		require.Equal(t, p.Value, ih.RawString())
 	}

-	err = th.st.Delete("test", keys...)
+	err = th.st.Delete(kvStoreCtx, keys...)
 	require.Nil(t, err)

 	for _, k := range keys {
-		contains, err := th.st.Contains("test", k)
+		contains, err := th.st.Contains(kvStoreCtx, k)
 		require.Nil(t, err)
 		require.False(t, contains)
 	}