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feat: Add dev server (AKA LaunchDevly) (#364)
This adds a new command to the cli, dev-server. When you start it, an HTTP server starts running on port 8765. It provides APIs that mimic the APIs that LaunchDarkly SDKs use. You can add-projects to the dev server and they will be populated with flag values from the source-environment. You can also add-overrides to change the value served by a given flag. There's also a UI that will display which flag values are being served and allow you to set overrides. These features combine to provide a more portable solution for local & ephemeral development environments of projects using LaunchDarkly than the current state of the art: creating real environments in LaunchDarkly for each of these environments.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
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@@ -2,3 +2,4 @@ | |
| dist/ | ||
| *.log | ||
| node_modules/ | ||
| devserver.db | ||
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,36 +1,44 @@ | ||
| package cliflags | ||
|
|
||
| const ( | ||
| BaseURIDefault = "https://app.launchdarkly.com" | ||
| BaseURIDefault = "https://app.launchdarkly.com" | ||
| DevStreamURIDefault = "https://stream.launchdarkly.com" | ||
| PortDefault = "8765" | ||
|
|
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| AccessTokenFlag = "access-token" | ||
| AnalyticsOptOut = "analytics-opt-out" | ||
| BaseURIFlag = "base-uri" | ||
| DataFlag = "data" | ||
| EmailsFlag = "emails" | ||
| EnvironmentFlag = "environment" | ||
| FlagFlag = "flag" | ||
| OutputFlag = "output" | ||
| ProjectFlag = "project" | ||
| RoleFlag = "role" | ||
| AccessTokenFlag = "access-token" | ||
| AnalyticsOptOut = "analytics-opt-out" | ||
| BaseURIFlag = "base-uri" | ||
| DataFlag = "data" | ||
| DevStreamURIFlag = "dev-stream-uri" | ||
| EmailsFlag = "emails" | ||
| EnvironmentFlag = "environment" | ||
| FlagFlag = "flag" | ||
| OutputFlag = "output" | ||
| PortFlag = "port" | ||
| ProjectFlag = "project" | ||
| RoleFlag = "role" | ||
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| AccessTokenFlagDescription = "LaunchDarkly access token with write-level access" | ||
| AnalyticsOptOutDescription = "Opt out of analytics tracking" | ||
| BaseURIFlagDescription = "LaunchDarkly base URI" | ||
| DevStreamURIDescription = "Streaming service endpoint that the dev server uses to obtain authoritative flag data. This may be a LaunchDarkly or Relay Proxy endpoint" | ||
| EnvironmentFlagDescription = "Default environment key" | ||
| FlagFlagDescription = "Default feature flag key" | ||
| OutputFlagDescription = "Command response output format in either JSON or plain text" | ||
| PortFlagDescription = "Port for the dev server to run on" | ||
| ProjectFlagDescription = "Default project key" | ||
| ) | ||
|
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| func AllFlagsHelp() map[string]string { | ||
| return map[string]string{ | ||
| AccessTokenFlag: AccessTokenFlagDescription, | ||
| AnalyticsOptOut: AnalyticsOptOutDescription, | ||
| BaseURIFlag: BaseURIFlagDescription, | ||
| EnvironmentFlag: EnvironmentFlagDescription, | ||
| FlagFlag: FlagFlagDescription, | ||
| OutputFlag: OutputFlagDescription, | ||
| ProjectFlag: ProjectFlagDescription, | ||
| AccessTokenFlag: AccessTokenFlagDescription, | ||
| AnalyticsOptOut: AnalyticsOptOutDescription, | ||
| BaseURIFlag: BaseURIFlagDescription, | ||
| DevStreamURIFlag: DevStreamURIDescription, | ||
| EnvironmentFlag: EnvironmentFlagDescription, | ||
| FlagFlag: FlagFlagDescription, | ||
| OutputFlag: OutputFlagDescription, | ||
| PortFlag: PortFlagDescription, | ||
| ProjectFlag: ProjectFlagDescription, | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,60 @@ | ||
| package dev_server | ||
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| import ( | ||
| "fmt" | ||
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| "github.com/spf13/cobra" | ||
| "github.com/spf13/viper" | ||
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| "github.com/launchdarkly/ldcli/cmd/cliflags" | ||
| resourcecmd "github.com/launchdarkly/ldcli/cmd/resources" | ||
| "github.com/launchdarkly/ldcli/internal/dev_server" | ||
| "github.com/launchdarkly/ldcli/internal/resources" | ||
| ) | ||
|
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| func NewDevServerCmd(client resources.Client, ldClient dev_server.Client) *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: "dev-server", | ||
| Short: "Development server", | ||
| Long: "Start and use a local development server for overriding flag values.", | ||
| } | ||
|
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| cmd.PersistentFlags().String( | ||
| cliflags.DevStreamURIFlag, | ||
| cliflags.DevStreamURIDefault, | ||
| cliflags.DevStreamURIDescription, | ||
| ) | ||
| _ = viper.BindPFlag(cliflags.DevStreamURIFlag, cmd.PersistentFlags().Lookup(cliflags.DevStreamURIFlag)) | ||
|
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| cmd.PersistentFlags().String( | ||
| cliflags.PortFlag, | ||
| cliflags.PortDefault, | ||
| cliflags.PortFlagDescription, | ||
| ) | ||
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| _ = viper.BindPFlag(cliflags.PortFlag, cmd.PersistentFlags().Lookup(cliflags.PortFlag)) | ||
|
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| // Add subcommands here | ||
| cmd.AddGroup(&cobra.Group{ID: "projects", Title: "Project commands:"}) | ||
| cmd.AddCommand(NewListProjectsCmd(client)) | ||
| cmd.AddCommand(NewGetProjectCmd(client)) | ||
| cmd.AddCommand(NewSyncProjectCmd(client)) | ||
| cmd.AddCommand(NewRemoveProjectCmd(client)) | ||
| cmd.AddCommand(NewAddProjectCmd(client)) | ||
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| cmd.AddGroup(&cobra.Group{ID: "overrides", Title: "Override commands:"}) | ||
| cmd.AddCommand(NewAddOverrideCmd(client)) | ||
| cmd.AddCommand(NewRemoveOverrideCmd(client)) | ||
| cmd.AddGroup(&cobra.Group{ID: "server", Title: "Server commands:"}) | ||
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| cmd.AddCommand(NewStartServerCmd(ldClient)) | ||
| cmd.AddCommand(NewUICmd()) | ||
|
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| cmd.SetUsageTemplate(resourcecmd.SubcommandUsageTemplate()) | ||
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| return cmd | ||
| } | ||
|
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| func getDevServerUrl() string { | ||
| return fmt.Sprintf("http://localhost:%s", viper.GetString(cliflags.PortFlag)) | ||
| } |
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