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Add the subcommand "recreate-service"
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,76 @@ | ||
| package cmd | ||
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| import ( | ||
| "encoding/json" | ||
| "strings" | ||
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| "github.com/aws/aws-sdk-go/service/ecs" | ||
| "github.com/spf13/cobra" | ||
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| "github.com/abicky/ecsmec/internal/service" | ||
| ) | ||
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| var recreateServiceCmd *cobra.Command | ||
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| func init() { | ||
| cmd := &cobra.Command{ | ||
| Use: "recreate-service", | ||
| Short: "Recreate a service with overrides", | ||
| Long: `This command creates a new service from the specified service with overrides, | ||
| and after the new service becomes stable, it deletes the old one. | ||
| Therefore, as necessary, you have to increase the capacity of the cluster the | ||
| service belongs to manually so that it has enough capacity for the new service | ||
| to place its tasks.`, | ||
| Example: ` You can change the placement strategy of the service "test" in the default cluster | ||
| by the following command: | ||
| ecsmec recreate-service --service test --overrides '{ | ||
| "PlacementStrategy": [ | ||
| { "Field": "attribute:ecs.availability-zone", "Type": "spread" }, | ||
| { "Field": "CPU", "Type": "binpack" } | ||
| ] | ||
| }' | ||
| In the same way, you can change the name of the service "test" in the default | ||
| cluster like below: | ||
| ecsmec recreate-service --service test --overrides '{ | ||
| "ServiceName": "new-name" | ||
| }' | ||
| `, | ||
| RunE: recreateService, | ||
| } | ||
| rootCmd.AddCommand(cmd) | ||
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| cmd.Flags().String("cluster", "default", "The name of the target `CLUSTER`") | ||
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| cmd.Flags().String("service", "", "The name of the target `SERVICE` (required)") | ||
| cmd.MarkFlagRequired("service") | ||
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| cmd.Flags().String("overrides", "{}", "An `JSON` to override some fields of the new service") | ||
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| recreateServiceCmd = cmd | ||
| } | ||
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| func recreateService(cmd *cobra.Command, args []string) error { | ||
| cluster, _ := recreateServiceCmd.Flags().GetString("cluster") | ||
| serviceName, _ := recreateServiceCmd.Flags().GetString("service") | ||
| overrides, _ := recreateServiceCmd.Flags().GetString("overrides") | ||
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| var overrideDef service.Definition | ||
| decoder := json.NewDecoder(strings.NewReader(overrides)) | ||
| decoder.DisallowUnknownFields() | ||
| if err := decoder.Decode(&overrideDef); err != nil { | ||
| return newRuntimeError("failed to parse \"overrides\": %w", err) | ||
| } | ||
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| sess, err := newSession() | ||
| if err != nil { | ||
| return newRuntimeError("failed to initialize a session: %w", err) | ||
| } | ||
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| if err := service.NewService(ecs.New(sess)).Recreate(cluster, serviceName, overrideDef); err != nil { | ||
| return newRuntimeError("failed to recreate the service: %w", err) | ||
| } | ||
| return nil | ||
| } |
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