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feat: Headless Argo CD (aka GitOps Agent) (argoproj#6361)
* feat: add --headless flag to Argo CD CLI command Signed-off-by: Alexander Matyushentsev <[email protected]> * docs: add headless installation manifests and documentation Signed-off-by: Alexander Matyushentsev <[email protected]> * Apply reviewer notes Signed-off-by: Alexander Matyushentsev <[email protected]> * Remove port forwarding logs Signed-off-by: Alexander Matyushentsev <[email protected]>
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Alexander Matyushentsev
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Jul 21, 2021
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| package commands | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
|
|
||
| "github.com/spf13/cobra" | ||
|
|
||
| "github.com/argoproj/argo-cd/v2/cmd/argocd/commands/headless" | ||
| "github.com/argoproj/argo-cd/v2/common" | ||
| "github.com/argoproj/argo-cd/v2/pkg/apiclient" | ||
| ) | ||
|
|
||
| func NewAdminCommand() *cobra.Command { | ||
| cmd := &cobra.Command{ | ||
| Use: "admin", | ||
| Short: "Contains a set of commands useful for Argo CD administrators and requires direct Kubernetes access", | ||
| Run: func(c *cobra.Command, args []string) { | ||
| c.HelpFunc()(c, args) | ||
| }, | ||
| } | ||
| cmd.AddCommand(NewDashboardCommand()) | ||
| return cmd | ||
| } | ||
|
|
||
| func NewDashboardCommand() *cobra.Command { | ||
| var ( | ||
| port int | ||
| ) | ||
| cmd := &cobra.Command{ | ||
| Use: "dashboard", | ||
| Short: "Starts Argo CD Web UI locally", | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| println(fmt.Sprintf("Argo CD UI is available at http://localhost:%d", port)) | ||
| <-context.Background().Done() | ||
| }, | ||
| } | ||
| clientOpts := &apiclient.ClientOptions{Headless: true} | ||
| headless.InitCommand(cmd, clientOpts, &port) | ||
| cmd.Flags().IntVar(&port, "port", common.DefaultPortAPIServer, "Listen on given port") | ||
| return cmd | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| package headless | ||
|
|
||
| import ( | ||
| "context" | ||
| "fmt" | ||
| "sync" | ||
| "time" | ||
|
|
||
| "github.com/go-redis/redis/v8" | ||
| "k8s.io/client-go/tools/clientcmd" | ||
|
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| "github.com/argoproj/argo-cd/v2/reposerver/apiclient" | ||
| repoapiclient "github.com/argoproj/argo-cd/v2/reposerver/apiclient" | ||
| "github.com/argoproj/argo-cd/v2/util/cache" | ||
| "github.com/argoproj/argo-cd/v2/util/io" | ||
| kubeutil "github.com/argoproj/argo-cd/v2/util/kube" | ||
| ) | ||
|
|
||
| type forwardCacheClient struct { | ||
| namespace string | ||
| init sync.Once | ||
| client cache.CacheClient | ||
| err error | ||
| } | ||
|
|
||
| func (c *forwardCacheClient) doLazy(action func(client cache.CacheClient) error) error { | ||
| c.init.Do(func() { | ||
| overrides := clientcmd.ConfigOverrides{} | ||
| redisPort, err := kubeutil.PortForward(6379, c.namespace, &overrides, | ||
| "app.kubernetes.io/name=argocd-redis-ha-haproxy", "app.kubernetes.io/name=argocd-redis") | ||
| if err != nil { | ||
| c.err = err | ||
| return | ||
| } | ||
|
|
||
| redisClient := redis.NewClient(&redis.Options{Addr: fmt.Sprintf("localhost:%d", redisPort)}) | ||
| c.client = cache.NewRedisCache(redisClient, time.Hour) | ||
| }) | ||
| if c.err != nil { | ||
| return c.err | ||
| } | ||
| return action(c.client) | ||
| } | ||
|
|
||
| func (c *forwardCacheClient) Set(item *cache.Item) error { | ||
| return c.doLazy(func(client cache.CacheClient) error { | ||
| return client.Set(item) | ||
| }) | ||
| } | ||
|
|
||
| func (c *forwardCacheClient) Get(key string, obj interface{}) error { | ||
| return c.doLazy(func(client cache.CacheClient) error { | ||
| return client.Get(key, obj) | ||
| }) | ||
| } | ||
|
|
||
| func (c *forwardCacheClient) Delete(key string) error { | ||
| return c.doLazy(func(client cache.CacheClient) error { | ||
| return client.Delete(key) | ||
| }) | ||
| } | ||
|
|
||
| func (c *forwardCacheClient) OnUpdated(ctx context.Context, key string, callback func() error) error { | ||
| return c.doLazy(func(client cache.CacheClient) error { | ||
| return client.OnUpdated(ctx, key, callback) | ||
| }) | ||
| } | ||
|
|
||
| func (c *forwardCacheClient) NotifyUpdated(key string) error { | ||
| return c.doLazy(func(client cache.CacheClient) error { | ||
| return client.NotifyUpdated(key) | ||
| }) | ||
| } | ||
|
|
||
| type forwardRepoClientset struct { | ||
| namespace string | ||
| init sync.Once | ||
| repoClientset repoapiclient.Clientset | ||
| err error | ||
| } | ||
|
|
||
| func (c *forwardRepoClientset) NewRepoServerClient() (io.Closer, repoapiclient.RepoServerServiceClient, error) { | ||
| c.init.Do(func() { | ||
| overrides := clientcmd.ConfigOverrides{} | ||
| repoServerPort, err := kubeutil.PortForward(8081, c.namespace, &overrides, "app.kubernetes.io/name=argocd-repo-server") | ||
| if err != nil { | ||
| c.err = err | ||
| return | ||
| } | ||
| c.repoClientset = apiclient.NewRepoServerClientset(fmt.Sprintf("localhost:%d", repoServerPort), 60, apiclient.TLSConfiguration{ | ||
| DisableTLS: false, StrictValidation: false}) | ||
| }) | ||
| if c.err != nil { | ||
| return nil, nil, c.err | ||
| } | ||
| return c.repoClientset.NewRepoServerClient() | ||
| } |
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