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Add logs commands via github.com/TylerBrock/saw
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| /* | ||
| Copyright © 2020 NAME HERE <EMAIL ADDRESS> | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
| package cmd | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/url" | ||
| "reflect" | ||
| "strings" | ||
| "unsafe" | ||
|
|
||
| "github.com/TylerBrock/saw/blade" | ||
| sawconfig "github.com/TylerBrock/saw/config" | ||
| "github.com/aws/aws-sdk-go/aws/session" | ||
| "github.com/aws/aws-sdk-go/service/cloudwatchlogs" | ||
| "github.com/lincolnloop/apppack/app" | ||
| "github.com/pkg/browser" | ||
| "github.com/spf13/cobra" | ||
| ) | ||
|
|
||
| var sawConfig sawconfig.Configuration | ||
| var sawOutputConfig sawconfig.OutputConfiguration | ||
|
|
||
| // newBlade is a hack to get a Blade instance with our AWS session | ||
| func newBlade(session *session.Session) *blade.Blade { | ||
| b := blade.Blade{} | ||
| setField := func(name string, value interface{}) { | ||
| field := reflect.ValueOf(&b).Elem().FieldByName(name) | ||
| reflect.NewAt(field.Type(), unsafe.Pointer(field.UnsafeAddr())).Elem().Set(reflect.ValueOf(value)) | ||
| } | ||
| setField("cwl", cloudwatchlogs.New(session)) | ||
| setField("config", &sawConfig) | ||
| setField("output", &sawOutputConfig) | ||
| return &b | ||
| } | ||
|
|
||
| // logsCmd represents the logs command | ||
| var logsCmd = &cobra.Command{ | ||
| Use: "logs", | ||
| Short: "Access application logs from Cloudwatch Logs", | ||
| Long: `Access application logs from Cloudwatch Logs`, | ||
| } | ||
|
|
||
| // logsCmd represents the logs command | ||
| var logsViewCmd = &cobra.Command{ | ||
| Use: "view", | ||
| Short: "Print application logs to terminal", | ||
| Long: `Print application logs to terminal`, | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| Spinner.Start() | ||
| a, err := app.Init(AppName) | ||
| checkErr(err) | ||
| a.LoadSettings() | ||
| sawConfig.Group = a.Settings.LogGroup.Name | ||
| sawOutputConfig.Pretty = !sawOutputConfig.Raw | ||
| // convert to format saw eexpects | ||
| sawConfig.Start = fmt.Sprintf("-%s", sawConfig.Start) | ||
| if sawConfig.End != "" && sawConfig.End != "now" { | ||
| sawConfig.End = fmt.Sprintf("-%s", sawConfig.Start) | ||
| } | ||
| b := newBlade(a.Session) | ||
| if sawConfig.Prefix != "" { | ||
| streams := b.GetLogStreams() | ||
| if len(streams) == 0 { | ||
| checkErr(fmt.Errorf("no streams found in %s with prefix %s", sawConfig.Group, sawConfig.Prefix)) | ||
| } | ||
| sawConfig.Streams = streams | ||
| } | ||
| Spinner.Stop() | ||
| if cmd.Flags().Lookup("follow").Value.String() == "true" { | ||
| b.StreamEvents() | ||
| } else { | ||
| b.GetEvents() | ||
| } | ||
| }, | ||
| } | ||
|
|
||
| // logsCmd represents the logs command | ||
| var logsConsoleCmd = &cobra.Command{ | ||
| Use: "console", | ||
| Short: "View logs in the AWS web console", | ||
| Long: `View logs in the AWS web console`, | ||
| Run: func(cmd *cobra.Command, args []string) { | ||
| a, err := app.Init(AppName) | ||
| a.LoadSettings() | ||
| checkErr(err) | ||
| logGroupParam := strings.ReplaceAll(url.QueryEscape(a.Settings.LogGroup.Name), "%", "*") | ||
| queryParam := strings.ReplaceAll(url.QueryEscape("fields @timestamp, @message\n| sort @timestamp desc\n| limit 200"), "%", "*") | ||
| // TODO remove hard-coded region | ||
| region := "us-east-1" | ||
| destinationURL := fmt.Sprintf("https://console.aws.amazon.com/cloudwatch/home?region=%s#logsV2:logs-insights$3FqueryDetail$3D~(editorString~'%s~source~(~'%s))", region, queryParam, logGroupParam) | ||
| signinURL, err := a.GetConsoleURL(destinationURL) | ||
| checkErr(err) | ||
| browser.OpenURL(*signinURL) | ||
| }, | ||
| } | ||
|
|
||
| func init() { | ||
| rootCmd.AddCommand(logsCmd) | ||
| logsCmd.PersistentFlags().StringVarP(&AppName, "app-name", "a", "", "App name (required)") | ||
| logsCmd.MarkPersistentFlagRequired("app-name") | ||
|
|
||
| logsCmd.AddCommand(logsConsoleCmd) | ||
| logsCmd.AddCommand(logsViewCmd) | ||
| logsViewCmd.Flags().StringVar(&sawConfig.Prefix, "prefix", "", `log group prefix filter | ||
| Use this to filter logs for specific services, e.g. "web", "worker"`) | ||
| logsViewCmd.Flags().StringVar( | ||
| &sawConfig.Start, | ||
| "start", | ||
| "5m", | ||
| `start getting the logs from this point | ||
| Takes an absolute timestamp in RFC3339 format, or a relative time (eg. 2h). | ||
| Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".`, | ||
| ) | ||
| logsViewCmd.Flags().StringVar( | ||
| &sawConfig.End, | ||
| "stop", | ||
| "now", | ||
| `stop getting the logs at this point | ||
| Takes an absolute timestamp in RFC3339 format, or a relative time (eg. 2h). | ||
| Valid time units are "ns", "us" (or "µs"), "ms", "s", "m", "h".`, | ||
| ) | ||
| logsViewCmd.Flags().StringVar(&sawConfig.Filter, "filter", "", "event filter pattern") | ||
| logsViewCmd.Flags().BoolVar(&sawOutputConfig.Raw, "raw", false, "No timestamp, log group or colors") | ||
| logsViewCmd.Flags().BoolVar(&sawOutputConfig.Expand, "expand", false, "indent JSON log messages") | ||
| logsViewCmd.Flags().BoolVar(&sawOutputConfig.Invert, "invert", false, "invert colors for light terminal themes") | ||
| logsViewCmd.Flags().BoolVar(&sawOutputConfig.RawString, "rawString", false, "print JSON strings without escaping") | ||
| logsViewCmd.Flags().BoolP("follow", "f", false, "Stream logs to console") | ||
| } |
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