External Locking DB: Redis (#2491)

* Initial build out of redis backend

* Regenerate locking mocks and matchers

* More test cleanup

* More test fixes

* Added tests for redis

* Test fix

* Linting fix

* Dcos update

* Update redis.go

* Update server.go

* Adding nolint to RedisDB struct

Author: SudoSpartanDan

.gitignore

@@ -14,6 +14,7 @@ helm/test-values.yaml
 golangci-lint
 atlantis
 .devcontainer
+atlantis.env
 
 # gitreleaser
 dist/

CONTRIBUTING.md

@@ -130,6 +130,8 @@ We use [pegomock](https://github.com/petergtz/pegomock) for mocking. If you're
 modifying any interfaces that are mocked, you'll need to regen the mocks for that
 interface.
 
+Install using `go get github.com/petergtz/pegomock/pegomock`
+
 If you see errors like:
 ```
 # github.com/runatlantis/atlantis/server/events [github.com/runatlantis/atlantis/server/events.test]

cmd/server.go

@@ -80,11 +80,15 @@ const (
 	GitlabWebhookSecretFlag     = "gitlab-webhook-secret" // nolint: gosec
 	APISecretFlag               = "api-secret"
 	HidePrevPlanComments        = "hide-prev-plan-comments"
+	LockingDBType               = "locking-db-type"
 	LogLevelFlag                = "log-level"
 	ParallelPoolSize            = "parallel-pool-size"
 	StatsNamespace              = "stats-namespace"
 	AllowDraftPRs               = "allow-draft-prs"
 	PortFlag                    = "port"
+	RedisHost                   = "redis-host"
+	RedisPassword               = "redis-password"
+	RedisPort                   = "redis-port"
 	RepoConfigFlag              = "repo-config"
 	RepoConfigJSONFlag          = "repo-config-json"
 	// RepoWhitelistFlag is deprecated for RepoAllowlistFlag.
@@ -123,10 +127,12 @@ const (
 	DefaultDataDir          = "~/.atlantis"
 	DefaultGHHostname       = "github.com"
 	DefaultGitlabHostname   = "gitlab.com"
+	DefaultLockingDBType    = "boltdb"
 	DefaultLogLevel         = "info"
 	DefaultParallelPoolSize = 15
 	DefaultStatsNamespace   = "atlantis"
 	DefaultPort             = 4141
+	DefaultRedisPort        = 6379
 	DefaultTFDownloadURL    = "https://releases.hashicorp.com"
 	DefaultTFEHostname      = "app.terraform.io"
 	DefaultVCSStatusName    = "atlantis"
@@ -264,6 +270,10 @@ var stringFlags = map[string]stringFlag{
 	APISecretFlag: {
 		description: "Secret to validate requests made to the API",
 	},
+	LockingDBType: {
+		description:  "The locking database type to use for storing plan and apply locks.",
+		defaultValue: DefaultLockingDBType,
+	},
 	LogLevelFlag: {
 		description:  "Log level. Either debug, info, warn, or error.",
 		defaultValue: DefaultLogLevel,
@@ -272,6 +282,12 @@ var stringFlags = map[string]stringFlag{
 		description:  "Namespace for aggregating stats.",
 		defaultValue: DefaultStatsNamespace,
 	},
+	RedisHost: {
+		description: "The Redis Hostname for when using a Locking DB type of 'redis'.",
+	},
+	RedisPassword: {
+		description: "The Redis Password for when using a Locking DB type of 'redis'.",
+	},
 	RepoConfigFlag: {
 		description: "Path to a repo config file, used to customize how Atlantis runs on each repo. See runatlantis.io/docs for more details.",
 	},
@@ -450,6 +466,10 @@ var intFlags = map[string]intFlag{
 		description:  "Port to bind to.",
 		defaultValue: DefaultPort,
 	},
+	RedisPort: {
+		description:  "The Redis Port for when using a Locking DB type of 'redis'.",
+		defaultValue: DefaultRedisPort,
+	},
 }
 
 var int64Flags = map[string]int64Flag{
@@ -672,6 +692,9 @@ func (s *ServerCmd) setDefaults(c *server.UserConfig) {
 	if c.BitbucketBaseURL == "" {
 		c.BitbucketBaseURL = DefaultBitbucketBaseURL
 	}
+	if c.LockingDBType == "" {
+		c.LockingDBType = DefaultLockingDBType
+	}
 	if c.LogLevel == "" {
 		c.LogLevel = DefaultLogLevel
 	}
@@ -684,6 +707,9 @@ func (s *ServerCmd) setDefaults(c *server.UserConfig) {
 	if c.Port == 0 {
 		c.Port = DefaultPort
 	}
+	if c.RedisPort == 0 {
+		c.RedisPort = DefaultRedisPort
+	}
 	if c.TFDownloadURL == "" {
 		c.TFDownloadURL = DefaultTFDownloadURL
 	}

cmd/server_test.go

@@ -84,6 +84,7 @@ var testFlags = map[string]interface{}{
 	GitlabTokenFlag:            "gitlab-token",
 	GitlabUserFlag:             "gitlab-user",
 	GitlabWebhookSecretFlag:    "gitlab-secret",
+	LockingDBType:              "boltdb",
 	LogLevelFlag:               "debug",
 	StatsNamespace:             "atlantis",
 	AllowDraftPRs:              true,

docker-compose.yml

@@ -12,7 +12,17 @@ services:
             NGROK_PORT: atlantis:4141
         depends_on:
         - atlantis
+    redis:
+        image: redis:6.2-alpine
+        restart: always
+        ports:
+        - '6379:6379'
+        command: redis-server --save 20 1 --loglevel warning --requirepass test123
+        volumes: 
+        - redis:/data
     atlantis:
+        depends_on:
+        - redis
         build:
             context: .
             dockerfile: Dockerfile.dev
@@ -23,4 +33,8 @@ services:
             - ./:/atlantis/src
         # Contains the flags that atlantis uses in env var form
         env_file:
-            - ./atlantis.env
+            - ./atlantis.env
+
+volumes:
+    redis:
+        driver: local

go.mod

@@ -13,6 +13,7 @@ require (
 	github.com/elazarl/go-bindata-assetfs v1.0.1
 	github.com/flynn-archive/go-shlex v0.0.0-20150515145356-3f9db97f8568
 	github.com/go-ozzo/ozzo-validation v0.0.0-20170913164239-85dcd8368eba
+	github.com/go-redis/redis/v8 v8.11.5
 	github.com/go-test/deep v1.0.8
 	github.com/golang-jwt/jwt/v4 v4.4.2
 	github.com/google/go-github/v31 v31.0.0
@@ -92,7 +93,7 @@ require (
 	github.com/mitchellh/go-wordwrap v1.0.0 // indirect
 	github.com/mitchellh/mapstructure v1.5.0 // indirect
 	github.com/mitchellh/reflectwalk v1.0.0 // indirect
-	github.com/onsi/gomega v1.10.1 // indirect
+	github.com/onsi/gomega v1.20.0 // indirect
 	github.com/pelletier/go-toml v1.9.5 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
 	github.com/russross/blackfriday/v2 v2.0.1 // indirect
@@ -135,14 +136,24 @@ require (
 require (
 	cloud.google.com/go/compute v1.6.1 // indirect
 	cloud.google.com/go/iam v0.3.0 // indirect
+	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
+	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 // indirect
+	github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a // indirect
+	github.com/alicebob/miniredis/v2 v2.23.0 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.1.2 // indirect
+	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
+	github.com/go-redis/redis/v9 v9.0.0-beta.2 // indirect
 	github.com/google/go-github/v45 v45.2.0 // indirect
 	github.com/m3db/prometheus_client_golang v0.8.1 // indirect
 	github.com/m3db/prometheus_client_model v0.1.0 // indirect
 	github.com/m3db/prometheus_common v0.1.0 // indirect
 	github.com/m3db/prometheus_procfs v0.8.1 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
-	github.com/onsi/ginkgo v1.14.0 // indirect
+	github.com/onsi/ginkgo v1.16.5 // indirect
 	github.com/pelletier/go-toml/v2 v2.0.1 // indirect
+	github.com/yuin/gopher-lua v0.0.0-20210529063254-f4c35e4016d9 // indirect
+	golang.org/x/tools v0.1.5 // indirect
+	gopkg.in/alecthomas/kingpin.v2 v2.2.6 // indirect
 	gotest.tools/v3 v3.3.0 // indirect
 )

go.sum

@@ -74,10 +74,17 @@ github.com/agext/levenshtein v1.2.2/go.mod h1:JEDfjyjHDjOF/1e4FlBE/PkbqA9OfWu2ki
 github.com/agext/levenshtein v1.2.3 h1:YB2fHEn0UJagG8T1rrWknE3ZQzWM06O8AMAatNn7lmo=
 github.com/agext/levenshtein v1.2.3/go.mod h1:JEDfjyjHDjOF/1e4FlBE/PkbqA9OfWu2ki2W0IB5558=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM=
 github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
+github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 h1:s6gZFSlWYmbqAuRjVTiNNhvNRfY2Wxp9nhfyel4rklc=
+github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
+github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a h1:HbKu58rmZpUGpz5+4FfNmIU+FmZg2P3Xaj2v2bfNWmk=
+github.com/alicebob/gopher-json v0.0.0-20200520072559-a9ecdc9d1d3a/go.mod h1:SGnFV6hVsYE877CKEZ6tDNTjaSXYUk6QqoIK6PrAtcc=
+github.com/alicebob/miniredis/v2 v2.23.0 h1:+lwAJYjvvdIVg6doFHuotFjueJ/7KY10xo/vm3X3Scw=
+github.com/alicebob/miniredis/v2 v2.23.0/go.mod h1:XNqvJdQJv5mSuVMc0ynneafpnL/zv52acZ6kqeS0t88=
 github.com/antihax/optional v1.0.0/go.mod h1:uupD/76wgC+ih3iEmQUL+0Ugr19nfwCT1kdvxnR2qWY=
 github.com/apparentlymart/go-dump v0.0.0-20180507223929-23540a00eaa3/go.mod h1:oL81AME2rN47vu18xqj1S1jPIPuN7afo62yKTNn3XMM=
 github.com/apparentlymart/go-textseg v1.0.0 h1:rRmlIsPEEhUTIKQb7T++Nz/A5Q6C9IuX2wFoYVvnCs0=
@@ -113,6 +120,8 @@ github.com/cactus/go-statsd-client/statsd v0.0.0-20200623234511-94959e3146b2 h1:
 github.com/cactus/go-statsd-client/statsd v0.0.0-20200623234511-94959e3146b2/go.mod h1:l/bIBLeOl9eX+wxJAzxS4TveKRtAqlyDpHjhkfO0MEI=
 github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
 github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
+github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
 github.com/cheggaaa/pb v1.0.27/go.mod h1:pQciLPpbU0oxA0h+VJYYLxO+XeDQb5pZijXscXHm81s=
 github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
 github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
@@ -129,6 +138,8 @@ github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSs
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
 github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/rVNCu3HqELle0jiPLLBs70cWOduZpkS1E78=
+github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/elazarl/go-bindata-assetfs v1.0.1 h1:m0kkaHRKEu7tUIUFVwhGGGYClXvyl4RE03qmvRTNfbw=
 github.com/elazarl/go-bindata-assetfs v1.0.1/go.mod h1:v+YaWX3bdea5J/mo8dSETolEo7R71Vk1u8bnjau5yw4=
@@ -162,8 +173,13 @@ github.com/go-playground/locales v0.12.1 h1:2FITxuFt/xuCNP1Acdhv62OzaCiviiE4kotf
 github.com/go-playground/locales v0.12.1/go.mod h1:IUMDtCfWo/w/mtMfIE/IG2K+Ey3ygWanZIBtBW0W2TM=
 github.com/go-playground/universal-translator v0.16.0 h1:X++omBR/4cE2MNg91AoC3rmGrCjJ8eAeUP/K/EKx4DM=
 github.com/go-playground/universal-translator v0.16.0/go.mod h1:1AnU7NaIRDWWzGEKwgtJRd2xk99HeFyHw3yid4rvQIY=
+github.com/go-redis/redis/v8 v8.11.5 h1:AcZZR7igkdvfVmQTPnu9WE37LRrO/YrBH5zWyjDC0oI=
+github.com/go-redis/redis/v8 v8.11.5/go.mod h1:gREzHqY1hg6oD9ngVRbLStwAWKhA0FEgq8Jd4h5lpwo=
+github.com/go-redis/redis/v9 v9.0.0-beta.2 h1:ZSr84TsnQyKMAg8gnV+oawuQezeJR11/09THcWCQzr4=
+github.com/go-redis/redis/v9 v9.0.0-beta.2/go.mod h1:Bldcd/M/bm9HbnNPi/LUtYBSD8ttcZYBMupwMXhdU0o=
 github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
+github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0/go.mod h1:fyg7847qk6SyHyPtNmDHnmrv/HOrqktSC+C9fM+CJOE=
 github.com/go-test/deep v1.0.3/go.mod h1:wGDj63lr65AM2AQyKZd/NYHGb0R+1RLqB8NKt3aSFNA=
 github.com/go-test/deep v1.0.8 h1:TDsG77qcSprGbC6vTN8OuXp5g+J+b5Pcguhf7Zt61VM=
 github.com/go-test/deep v1.0.8/go.mod h1:5C2ZWiW0ErCdrYzpqxLbTX7MG14M9iiw8DgHncVwcsE=
@@ -439,13 +455,19 @@ github.com/nlopes/slack v0.4.0 h1:OVnHm7lv5gGT5gkcHsZAyw++oHVFihbjWbL3UceUpiA=
 github.com/nlopes/slack v0.4.0/go.mod h1:jVI4BBK3lSktibKahxBF74txcK2vyvkza1z/+rRnVAM=
 github.com/nxadm/tail v1.4.4 h1:DQuhQpB1tVlglWS2hLQ5OV6B5r8aGxSrPc5Qo6uTN78=
 github.com/nxadm/tail v1.4.4/go.mod h1:kenIhsEOeOJmVchQTgglprH7qJGnHDVpk1VPCcaMI8A=
+github.com/nxadm/tail v1.4.8 h1:nPr65rt6Y5JFSKQO7qToXr7pePgD6Gwiw05lkbyAQTE=
+github.com/nxadm/tail v1.4.8/go.mod h1:+ncqLTQzXmGhMZNUePPaPqPvBxHAIsmXswZKocGu+AU=
 github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
 github.com/onsi/ginkgo v1.12.1/go.mod h1:zj2OWP4+oCPe1qIXoGWkgMRwljMUYCdkwsT2108oapk=
 github.com/onsi/ginkgo v1.14.0 h1:2mOpI4JVVPBN+WQRa0WKH2eXR+Ey+uK4n7Zj0aYpIQA=
 github.com/onsi/ginkgo v1.14.0/go.mod h1:iSB4RoI2tjJc9BBv4NKIKWKya62Rps+oPG/Lv9klQyY=
+github.com/onsi/ginkgo v1.16.5 h1:8xi0RTUf59SOSfEtZMvwTvXYMzG4gV23XVHOZiXNtnE=
+github.com/onsi/ginkgo v1.16.5/go.mod h1:+E8gABHa3K6zRBolWtd+ROzc/U5bkGt0FwiG042wbpU=
 github.com/onsi/gomega v1.7.1/go.mod h1:XdKZgCCFLUoM/7CFJVPcG8C1xQ1AJ0vpAezJrB7JYyY=
 github.com/onsi/gomega v1.10.1 h1:o0+MgICZLuZ7xjH7Vx6zS/zcu93/BEp1VwkIW1mEXCE=
 github.com/onsi/gomega v1.10.1/go.mod h1:iN09h71vgCQne3DLsj+A5owkum+a2tYe+TOCB1ybHNo=
+github.com/onsi/gomega v1.20.0 h1:8W0cWlwFkflGPLltQvLRB7ZVD5HuP6ng320w2IS245Q=
+github.com/onsi/gomega v1.20.0/go.mod h1:DtrZpjmvpn2mPm4YWQa0/ALMDj9v4YxLgojwPeREyVo=
 github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=
 github.com/pascaldekloe/goe v0.0.0-20180627143212-57f6aae5913c/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
 github.com/pascaldekloe/goe v0.1.0/go.mod h1:lzWF7FIEvWOWxwDKqyGYQf6ZUaNfKdP144TG7ZOy1lc=
@@ -556,6 +578,8 @@ github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9de
 github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+github.com/yuin/gopher-lua v0.0.0-20210529063254-f4c35e4016d9 h1:k/gmLsJDWwWqbLCur2yWnJzwQEKRcAHXo6seXGuSwWw=
+github.com/yuin/gopher-lua v0.0.0-20210529063254-f4c35e4016d9/go.mod h1:E1AXubJBdNmFERAOucpDIxNzeGfLzg0mYh+UfMWdChA=
 github.com/zclconf/go-cty v1.1.0/go.mod h1:xnAOWiHeOqg2nWS62VtQ7pbOu17FtxJNW8RLEih+O3s=
 github.com/zclconf/go-cty v1.2.0/go.mod h1:hOPWgoHbaTUnI5k4D2ld+GRpFJSCe6bCM7m1q/N4PQ8=
 github.com/zclconf/go-cty v1.5.1 h1:oALUZX+aJeEBUe2a1+uD2+UTaYfEjnKFDEMRydkGvWE=
@@ -723,6 +747,7 @@ golang.org/x/sys v0.0.0-20180823144017-11551d06cbcc/go.mod h1:STP8DvDyc/dI5b8T5h
 golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190204203706-41f3e6584952/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -769,6 +794,7 @@ golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201201145000-ef89a241ccb3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210104204734-6f8348627aad/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210112080510-489259a85091/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210119212857-b64e53b001e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210220050731-9a76102bfb43/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
@@ -869,6 +895,7 @@ golang.org/x/tools v0.0.0-20200904185747-39188db58858/go.mod h1:Cj7w3i3Rnn0Xh82u
 golang.org/x/tools v0.0.0-20201110124207-079ba7bd75cd/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20201201161351-ac6f37ff4c2a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20201208233053-a543418bbed2/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
+golang.org/x/tools v0.0.0-20201224043029-2b0845dc783e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210105154028-b0ab187a4818/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210106214847-113979e3529a/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
 golang.org/x/tools v0.0.0-20210108195828-e2f9c7f1fc8e/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
@@ -877,6 +904,7 @@ golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.2/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.3/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 golang.org/x/tools v0.1.4/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/tools v0.1.5 h1:ouewzE6p+/VEB31YYnTbEJdi8pFqKp4P4n85vwo3DHA=
 golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
 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=
@@ -1029,6 +1057,7 @@ google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQ
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
 google.golang.org/protobuf v1.28.0 h1:w43yiav+6bVFTBQFZX0r7ipe9JQ1QsbMgHwbBziscLw=
 google.golang.org/protobuf v1.28.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6 h1:jMFz6MfLP0/4fUyZle81rXUoxOBFi19VUFKVDOQfozc=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

runatlantis.io/docs/server-configuration.md

@@ -422,6 +422,16 @@ Values are chosen in this order:
   Hide previous plan comments to declutter PRs. This is only supported in
   GitHub currently.
 
+### `--locking-db-type`
+  ```bash
+  atlantis server --locking-db-type="<boltdb|redis>"
+  ```
+  The locking database type to use for storing plan and apply locks. Defaults to `boltdb`.
+
+  Notes:
+  * If set to `boltdb`, only one process may have access to the boltdb instance.
+  * If set to `redis`, then `--redis-host`, `--redis-port`, and `--redis-password` must be set.
+
 ### `--log-level`
   ```bash
   atlantis server --log-level="<debug|info|warn|error>"
@@ -440,6 +450,24 @@ Values are chosen in this order:
   ```
   Port to bind to. Defaults to `4141`.
 
+### `--redis-host`
+  ```bash
+  atlantis server --redis-host="localhost"
+  ```
+  The Redis Hostname for when using a Locking DB type of `redis`.
+
+### `--redis-password`
+  ```bash
+  atlantis server --redis-password="password123"
+  ```
+  The Redis Password for when using a Locking DB type of `redis`.
+
+### `--redis-port`
+  ```bash
+  atlantis server --redis-port=6379
+  ```
+  The Redis Port for when using a Locking DB type of `redis`. Defaults to `6379`.
+
 ### `--repo-config`
   ```bash
   atlantis server --repo-config="path/to/repos.yaml"