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Signed-off-by: Simon Ferquel <simon.ferquel@docker.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,84 +1,84 @@ | ||
| package command | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| ) | ||
|
|
||
| // Orchestrator type acts as an enum describing supported orchestrators. | ||
| type Orchestrator string | ||
|
|
||
| const ( | ||
| // OrchestratorKubernetes orchestrator | ||
| OrchestratorKubernetes = Orchestrator("kubernetes") | ||
| // OrchestratorSwarm orchestrator | ||
| OrchestratorSwarm = Orchestrator("swarm") | ||
| // OrchestratorAll orchestrator | ||
| OrchestratorAll = Orchestrator("all") | ||
| orchestratorUnset = Orchestrator("unset") | ||
|
|
||
| defaultOrchestrator = OrchestratorSwarm | ||
| envVarDockerStackOrchestrator = "DOCKER_STACK_ORCHESTRATOR" | ||
| envVarDockerOrchestrator = "DOCKER_ORCHESTRATOR" | ||
| ) | ||
|
|
||
| // HasKubernetes returns true if defined orchestrator has Kubernetes capabilities. | ||
| func (o Orchestrator) HasKubernetes() bool { | ||
| return o == OrchestratorKubernetes || o == OrchestratorAll | ||
| } | ||
|
|
||
| // HasSwarm returns true if defined orchestrator has Swarm capabilities. | ||
| func (o Orchestrator) HasSwarm() bool { | ||
| return o == OrchestratorSwarm || o == OrchestratorAll | ||
| } | ||
|
|
||
| // HasAll returns true if defined orchestrator has both Swarm and Kubernetes capabilities. | ||
| func (o Orchestrator) HasAll() bool { | ||
| return o == OrchestratorAll | ||
| } | ||
|
|
||
| func normalize(value string) (Orchestrator, error) { | ||
| switch value { | ||
| case "kubernetes": | ||
| return OrchestratorKubernetes, nil | ||
| case "swarm": | ||
| return OrchestratorSwarm, nil | ||
| case "", "unset": | ||
| return orchestratorUnset, nil | ||
| case "all": | ||
| return OrchestratorAll, nil | ||
| default: | ||
| return defaultOrchestrator, fmt.Errorf("specified orchestrator %q is invalid, please use either kubernetes, swarm or all", value) | ||
| } | ||
| } | ||
|
|
||
| // NormalizeOrchestrator parses an orchestrator value and checks if it is valid | ||
| func NormalizeOrchestrator(value string) (Orchestrator, error) { | ||
| return normalize(value) | ||
| } | ||
|
|
||
| // GetStackOrchestrator checks DOCKER_STACK_ORCHESTRATOR environment variable and configuration file | ||
| // orchestrator value and returns user defined Orchestrator. | ||
| func GetStackOrchestrator(flagValue, contextValue, globalDefault string, stderr io.Writer) (Orchestrator, error) { | ||
| // Check flag | ||
| if o, err := normalize(flagValue); o != orchestratorUnset { | ||
| return o, err | ||
| } | ||
| // Check environment variable | ||
| env := os.Getenv(envVarDockerStackOrchestrator) | ||
| if env == "" && os.Getenv(envVarDockerOrchestrator) != "" { | ||
| fmt.Fprintf(stderr, "WARNING: experimental environment variable %s is set. Please use %s instead\n", envVarDockerOrchestrator, envVarDockerStackOrchestrator) | ||
| } | ||
| if o, err := normalize(env); o != orchestratorUnset { | ||
| return o, err | ||
| } | ||
| if o, err := normalize(contextValue); o != orchestratorUnset { | ||
| return o, err | ||
| } | ||
| if o, err := normalize(globalDefault); o != orchestratorUnset { | ||
| return o, err | ||
| } | ||
| // Nothing set, use default orchestrator | ||
| return defaultOrchestrator, nil | ||
| } | ||
| package command | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| ) | ||
|
|
||
| // Orchestrator type acts as an enum describing supported orchestrators. | ||
| type Orchestrator string | ||
|
|
||
| const ( | ||
| // OrchestratorKubernetes orchestrator | ||
| OrchestratorKubernetes = Orchestrator("kubernetes") | ||
| // OrchestratorSwarm orchestrator | ||
| OrchestratorSwarm = Orchestrator("swarm") | ||
| // OrchestratorAll orchestrator | ||
| OrchestratorAll = Orchestrator("all") | ||
| orchestratorUnset = Orchestrator("unset") | ||
|
|
||
| defaultOrchestrator = OrchestratorSwarm | ||
| envVarDockerStackOrchestrator = "DOCKER_STACK_ORCHESTRATOR" | ||
| envVarDockerOrchestrator = "DOCKER_ORCHESTRATOR" | ||
| ) | ||
|
|
||
| // HasKubernetes returns true if defined orchestrator has Kubernetes capabilities. | ||
| func (o Orchestrator) HasKubernetes() bool { | ||
| return o == OrchestratorKubernetes || o == OrchestratorAll | ||
| } | ||
|
|
||
| // HasSwarm returns true if defined orchestrator has Swarm capabilities. | ||
| func (o Orchestrator) HasSwarm() bool { | ||
| return o == OrchestratorSwarm || o == OrchestratorAll | ||
| } | ||
|
|
||
| // HasAll returns true if defined orchestrator has both Swarm and Kubernetes capabilities. | ||
| func (o Orchestrator) HasAll() bool { | ||
| return o == OrchestratorAll | ||
| } | ||
|
|
||
| func normalize(value string) (Orchestrator, error) { | ||
| switch value { | ||
| case "kubernetes": | ||
| return OrchestratorKubernetes, nil | ||
| case "swarm": | ||
| return OrchestratorSwarm, nil | ||
| case "", "unset": | ||
| return orchestratorUnset, nil | ||
| case "all": | ||
| return OrchestratorAll, nil | ||
| default: | ||
| return defaultOrchestrator, fmt.Errorf("specified orchestrator %q is invalid, please use either kubernetes, swarm or all", value) | ||
| } | ||
| } | ||
|
|
||
| // NormalizeOrchestrator parses an orchestrator value and checks if it is valid | ||
| func NormalizeOrchestrator(value string) (Orchestrator, error) { | ||
| return normalize(value) | ||
| } | ||
|
|
||
| // GetStackOrchestrator checks DOCKER_STACK_ORCHESTRATOR environment variable and configuration file | ||
| // orchestrator value and returns user defined Orchestrator. | ||
| func GetStackOrchestrator(flagValue, contextValue, globalDefault string, stderr io.Writer) (Orchestrator, error) { | ||
| // Check flag | ||
| if o, err := normalize(flagValue); o != orchestratorUnset { | ||
| return o, err | ||
| } | ||
| // Check environment variable | ||
| env := os.Getenv(envVarDockerStackOrchestrator) | ||
| if env == "" && os.Getenv(envVarDockerOrchestrator) != "" { | ||
| fmt.Fprintf(stderr, "WARNING: experimental environment variable %s is set. Please use %s instead\n", envVarDockerOrchestrator, envVarDockerStackOrchestrator) | ||
| } | ||
| if o, err := normalize(env); o != orchestratorUnset { | ||
| return o, err | ||
| } | ||
| if o, err := normalize(contextValue); o != orchestratorUnset { | ||
| return o, err | ||
| } | ||
| if o, err := normalize(globalDefault); o != orchestratorUnset { | ||
| return o, err | ||
| } | ||
| // Nothing set, use default orchestrator | ||
| return defaultOrchestrator, nil | ||
| } |
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