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‎.gitignore‎

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bin/
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.idea
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.DS_Store
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._*
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*.swp
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*.code-workspace

‎.golangci.yml‎

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run:
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tests: false
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linters:
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enable:
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- govet
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- typecheck
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- deadcode
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- gocyclo
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- golint
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- varcheck
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- structcheck
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- maligned
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- megacheck
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- ineffassign
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- interfacer
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- unconvert
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- goconst
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- misspell
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- goimports
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- gofmt
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- staticcheck
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- unparam
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- nakedret
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disable:
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- dupl
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- gas
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- errcheck
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- prealloc
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linters-settings:
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govet:
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check-shadowing: true
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golint:
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min-confidence: 0.8
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gocyclo:
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min-complexity: 18
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maligned:
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suggest-new: true
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goconst:
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min-len: 2
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min-occurrences: 3
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misspell:
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locale: UK
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issues:
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max-same: 20
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exclude-use-default: false
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‎README.md‎

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# Redis Migrator
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Redis Migrator will take the keys from one server/db and
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transfer them to another server/db.
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```bash
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Usage: redis-migrator --source-host SOURCE-HOST --destination-host DESTINATION-HOST
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[--source-port SOURCE-PORT] [--source-db SOURCE-DB] [--source-user SOURCE-USER]
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[--source-pass SOURCE-PASS] [--destination-port DESTINATION-PORT]
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[--destination-db DESTINATION-DB] [--destination-user DESTINATION-USER]
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[--destination-pass DESTINATION-PASS] [--source-filter SOURCE-FILTER]
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[--destination-prefix DESTINATION-PREFIX] [--verbose]
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Options:
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--source-host SOURCE-HOST
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source redis server hostname
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--source-port SOURCE-PORT
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source redis server port [default: 6379]
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--source-db SOURCE-DB
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source redis server db index [default: 0]
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--source-user SOURCE-USER
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source redis server auth username
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--source-pass SOURCE-PASS
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source redis server auth password
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--destination-host DESTINATION-HOST
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destination redis server hostname
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--destination-port DESTINATION-PORT
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destination redis server port [default: 6379]
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--destination-db DESTINATION-DB
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destination redis server db index [default: 0]
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--destination-user DESTINATION-USER
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destination redis server auth username
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--destination-pass DESTINATION-PASS
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destination redis server auth password
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--source-filter SOURCE-FILTER
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source keys filter string [default: *]
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--destination-prefix DESTINATION-PREFIX
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destination key prefix to prepend
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--verbose, -v Print a lot more info
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--help, -h display this help and exit
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```
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## Install
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#### Centos
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RPM hosted on [yum.jc21.com](https://yum.jc21.com)
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#### Go Get
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```bash
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go get github.com/jc21/redis-migrator
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```
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#### Building
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```bash
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git clone https://github.com/jc21/redis-migrator && cd redis-migrator
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go build -o bin/redis-migrator cmd/redis-migrator/main.go
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./bin/redis-migrator -h
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```

‎cmd/redis-migrator/main.go‎

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package main
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import (
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"fmt"
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"os"
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"redismigrator/pkg/config"
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"redismigrator/pkg/helpers"
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"redismigrator/pkg/logger"
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"redismigrator/pkg/migrator"
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)
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func main() {
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argConfig := config.GetConfig()
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logger.Init(argConfig)
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logger.Trace("Args: %+v", argConfig)
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argConfig.Print()
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// Ensure configurations are not identical
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if argConfig.IsIdenticalServers() {
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logger.Error("Source and Destination configuration cannot be identical")
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os.Exit(1)
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}
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source := argConfig.GetSource()
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if err := source.Check(); err != nil {
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logger.Error(fmt.Sprintf("SOURCE: %s", err.Error()))
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os.Exit(1)
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}
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destination := argConfig.GetDestination()
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if err := destination.Check(); err != nil {
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logger.Error(fmt.Sprintf("DESTINATION: %s", err.Error()))
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os.Exit(1)
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}
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// Check connectivity to servers
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sourceClient := helpers.NewRedisClient(source)
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destinationClient := helpers.NewRedisClient(destination)
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size1, err1 := helpers.GetDBSize(sourceClient, "*")
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if err1 != nil {
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logger.Error(fmt.Sprintf("SOURCE: %v", err1))
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os.Exit(1)
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}
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logger.Info("Source has %d keys", size1)
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if size1 == 0 {
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logger.Warn("Migration was aborted as SOURCE has no keys")
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os.Exit(0)
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}
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size2, err2 := helpers.GetDBSize(destinationClient, "*")
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if err2 != nil {
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logger.Error(fmt.Sprintf("DESTINATION: %v", err2))
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os.Exit(1)
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}
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logger.Info("Destination has %d keys", size2)
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migrator.DoMigration(sourceClient, destinationClient, argConfig.KeyFilter, argConfig.KeyPrefix)
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}

‎go.mod‎

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module redismigrator
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go 1.15
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require (
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github.com/JeremyLoy/config v1.3.0
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github.com/alexflint/go-arg v1.3.0
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github.com/go-redis/redis/v8 v8.4.11
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github.com/mattn/go-colorable v0.1.2 // indirect
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github.com/mborders/logmatic v0.4.0
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)

‎go.sum‎

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github.com/JeremyLoy/config v1.3.0 h1:EQgVA/owXB7thqhe3ec3Q7P29USfB57NIzqcp8Rgg0Y=
2+
github.com/JeremyLoy/config v1.3.0/go.mod h1:YcGKcrAs8JJ0AEjPLWL3mCpXWgtuguf9G8WE5H/pLe0=
3+
github.com/alexflint/go-arg v1.3.0 h1:UfldqSdFWeLtoOuVRosqofU4nmhI1pYEbT4ZFS34Bdo=
4+
github.com/alexflint/go-arg v1.3.0/go.mod h1:9iRbDxne7LcR/GSvEr7ma++GLpdIU1zrghf2y2768kM=
5+
github.com/alexflint/go-scalar v1.0.0 h1:NGupf1XV/Xb04wXskDFzS0KWOLH632W/EO4fAFi+A70=
6+
github.com/alexflint/go-scalar v1.0.0/go.mod h1:GpHzbCOZXEKMEcygYQ5n/aa4Aq84zbxjy3MxYW0gjYw=
7+
github.com/cespare/xxhash/v2 v2.1.1 h1:6MnRN8NT7+YBpUIWxHtefFZOKTAPgGjpQSxqLNn0+qY=
8+
github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
9+
github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
10+
github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
11+
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
12+
github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
13+
github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
14+
github.com/fatih/color v1.7.0 h1:DkWD4oS2D8LGGgTQ6IvwJJXSL5Vp2ffcQg58nFV38Ys=
15+
github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4=
16+
github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
17+
github.com/fsnotify/fsnotify v1.4.9 h1:hsms1Qyu0jgnwNXIxa+/V/PDsU6CfLf6CNO8H7IWoS4=
18+
github.com/fsnotify/fsnotify v1.4.9/go.mod h1:znqG4EE+3YCdAaPaxE2ZRY/06pZUdp0tY4IgpuI1SZQ=
19+
github.com/go-redis/redis/v8 v8.4.11 h1:t2lToev01VTrqYQcv+QFbxtGgcf64K+VUMgf9Ap6A/E=
20+
github.com/go-redis/redis/v8 v8.4.11/go.mod h1:d5yY/TlkQyYBSBHnXUmnf1OrHbyQere5JV4dLKwvXmo=
21+
github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
22+
github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
23+
github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
24+
github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
25+
github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
26+
github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
27+
github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
28+
github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
29+
github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
30+
github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
31+
github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
32+
github.com/google/go-cmp v0.5.4 h1:L8R9j+yAqZuZjsqh/z+F1NCffTKKLShY6zXTItVIZ8M=
33+
github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
34+
github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
35+
github.com/mattn/go-colorable v0.0.9/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
36+
github.com/mattn/go-colorable v0.1.2 h1:/bC9yWikZXAL9uJdulbSfyVNIR3n3trXl+v8+1sx8mU=
37+
github.com/mattn/go-colorable v0.1.2/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
38+
github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
39+
github.com/mattn/go-isatty v0.0.8 h1:HLtExJ+uU2HOZ+wI0Tt5DtUDrx8yhUqDcp7fYERX4CE=
40+
github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
41+
github.com/mborders/logmatic v0.4.0 h1:M+n8uXEWQNK0jfIUk43C6mo6jhZMza2qRDqLjWk9dMU=
42+
github.com/mborders/logmatic v0.4.0/go.mod h1:pEdUc+nj/OhoEBm3zN64ehKjAm7L0YEHhZTWJ8ej7Sw=
43+
github.com/nxadm/tail v1.4.4 h1:DQuhQpB1tVlglWS2hLQ5OV6B5r8aGxSrPc5Qo6uTN78=
44+
github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
45+
github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
46+
github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
47+
github.com/onsi/ginkgo v1.14.2 h1:8mVmC9kjFFmA8H4pKMUhcblgifdkOIXPvbhN1T36q1M=
48+
github.com/onsi/ginkgo v1.14.2/go.mod h1:iSB4RoI2tjJc9BBv4NKIKWKya62Rps+oPG/Lv9klQyY=
49+
github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
50+
github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
51+
github.com/onsi/gomega v1.10.4 h1:NiTx7EEvBzu9sFOD1zORteLSt3o8gnlvZZwSE9TnY9U=
52+
github.com/onsi/gomega v1.10.4/go.mod h1:g/HbgYopi++010VEqkFgJHKC09uJiW9UkXvMUuKHUCQ=
53+
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
54+
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
55+
github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
56+
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
57+
github.com/stretchr/testify v1.6.1 h1:hDPOHmpOpP40lSULcqw7IrRb/u7w6RpDC9399XyoNd0=
58+
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
59+
go.opentelemetry.io/otel v0.16.0 h1:uIWEbdeb4vpKPGITLsRVUS44L5oDbDUCZxn8lkxhmgw=
60+
go.opentelemetry.io/otel v0.16.0/go.mod h1:e4GKElweB8W2gWUqbghw0B8t5MCTccc9212eNHnOHwA=
61+
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
62+
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 h1:psW17arqaxU48Z5kZ0CQnkZWQJsqcURM6tKiBApRjXI=
63+
golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
64+
golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
65+
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
66+
golang.org/x/net v0.0.0-20200520004742-59133d7f0dd7/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
67+
golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb h1:eBmm0M9fYhWpKZLjQUUKka/LtIxf46G4fxeEz5KJr9U=
68+
golang.org/x/net v0.0.0-20201202161906-c7110b5ffcbb/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
69+
golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
70+
golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
71+
golang.org/x/sys v0.0.0-20181106135930-3a76605856fd/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
72+
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
73+
golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
74+
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
75+
golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
76+
golang.org/x/sys v0.0.0-20191005200804-aed5e4c7ecf9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
77+
golang.org/x/sys v0.0.0-20191120155948-bd437916bb0e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
78+
golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
79+
golang.org/x/sys v0.0.0-20200519105757-fe76b779f299/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
80+
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f h1:+Nyd8tzPX9R7BWHguqsrbFdRx3WQ/1ib8I44HXV5yTA=
81+
golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
82+
golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
83+
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
84+
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
85+
golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
86+
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
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golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
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golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
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golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
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google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
92+
google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
93+
google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
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google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
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google.golang.org/protobuf v1.23.0 h1:4MY060fB1DLGMB/7MBTLnwQUY6+F09GEiz6SsrNqyzM=
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google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
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gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
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gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
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gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
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gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
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gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

‎pkg/config/config.go‎

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package config
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import (
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"redismigrator/pkg/model"
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"github.com/JeremyLoy/config"
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"github.com/alexflint/go-arg"
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)
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var appArguments model.ArgConfig
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// GetConfig returns the ArgConfig
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func GetConfig() model.ArgConfig {
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config.FromEnv().To(&appArguments)
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arg.MustParse(&appArguments)
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return appArguments
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}

‎pkg/helpers/redis.go‎

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package helpers
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import (
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"context"
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"fmt"
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"redismigrator/pkg/model"
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redis "github.com/go-redis/redis/v8"
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)
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// Ctx ...
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var Ctx = context.Background()
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// GetDBSize returns the keys length
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func GetDBSize(client *redis.Client, keyFilter string) (int64, error) {
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res := client.DBSize(Ctx)
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return res.Val(), res.Err()
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}
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// NewRedisClient creates a new client
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func NewRedisClient(cfg model.RedisServerConfig) *redis.Client {
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return redis.NewClient(&redis.Options{
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Addr: fmt.Sprintf("%s:%d", cfg.Hostname, cfg.Port),
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Username: cfg.Username,
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Password: cfg.Password,
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DB: cfg.DBIndex,
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})
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}

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