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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "encoding/json" | ||
| "flag" | ||
| "fmt" | ||
| "log" | ||
| "net/http" | ||
| "os" | ||
| "strings" | ||
|
|
||
| "github.com/aws/aws-sdk-go-v2/aws" | ||
| "github.com/aws/aws-sdk-go-v2/config" | ||
| "github.com/aws/aws-sdk-go-v2/service/cloudwatchlogs" | ||
| "github.com/aws/aws-sdk-go-v2/service/cloudwatchlogs/types" | ||
| ) | ||
|
|
||
| func main() { | ||
| var ( | ||
| logGroupName string | ||
| ) | ||
| flag.StringVar(&logGroupName, "log-group", "", "log group to ingest") | ||
| flag.Parse() | ||
|
|
||
| if logGroupName == "" { | ||
| flag.PrintDefaults() | ||
| os.Exit(1) | ||
| } | ||
|
|
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| cfg, err := config.LoadDefaultConfig(context.TODO()) | ||
| if err != nil { | ||
| log.Fatalf("unable to load SDK config, %v", err) | ||
| } | ||
|
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| svc := cloudwatchlogs.NewFromConfig(cfg) | ||
|
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| logStreams, err := fetchLogStreams(svc, logGroupName) | ||
| if err != nil { | ||
| log.Fatalf("failed to fetch log streams: %v", err) | ||
| } | ||
|
|
||
| for _, stream := range logStreams { | ||
| err := fetchLogEvents(svc, logGroupName, *stream.LogStreamName) | ||
| if err != nil { | ||
| log.Printf("failed to fetch log events for stream %s: %v", *stream.LogStreamName, err) | ||
| return | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func fetchLogStreams(svc *cloudwatchlogs.Client, logGroupName string) ([]types.LogStream, error) { | ||
| var allStreams []types.LogStream | ||
| nextToken := "" | ||
|
|
||
| for { | ||
| input := &cloudwatchlogs.DescribeLogStreamsInput{ | ||
| LogGroupName: aws.String(logGroupName), | ||
| } | ||
|
|
||
| if nextToken != "" { | ||
| input.NextToken = aws.String(nextToken) | ||
| } | ||
|
|
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| result, err := svc.DescribeLogStreams(context.TODO(), input) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
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| allStreams = append(allStreams, result.LogStreams...) | ||
|
|
||
| if result.NextToken == nil { | ||
| break | ||
| } | ||
|
|
||
| nextToken = *result.NextToken | ||
| } | ||
|
|
||
| return allStreams, nil | ||
| } | ||
|
|
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| func fetchLogEvents(svc *cloudwatchlogs.Client, logGroupName, logStreamName string) error { | ||
| nextToken := "" | ||
| messages := []map[string]any{} | ||
| logStreamNameSplit := strings.Split(logStreamName, "/") | ||
| logStreamWithoutRandom := strings.Join(logStreamNameSplit[:len(logStreamNameSplit)-1], "/") | ||
|
|
||
| for { | ||
| input := &cloudwatchlogs.GetLogEventsInput{ | ||
| LogGroupName: aws.String(logGroupName), | ||
| LogStreamName: aws.String(logStreamName), | ||
| StartFromHead: aws.Bool(true), | ||
| } | ||
|
|
||
| if nextToken != "" { | ||
| input.NextToken = aws.String(nextToken) | ||
| } | ||
|
|
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| result, err := svc.GetLogEvents(context.TODO(), input) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| for _, event := range result.Events { | ||
| seconds := float64(*event.Timestamp / 1000) | ||
| microseconds := float64(*event.Timestamp%1000) * 1000 | ||
| messages = append(messages, map[string]any{ | ||
| "date": seconds + (microseconds / 1e6), | ||
| "log": *event.Message, | ||
| "log-group": logGroupName, | ||
| "log-stream": logStreamWithoutRandom, | ||
| }) | ||
| } | ||
|
|
||
| if result.NextForwardToken == nil || nextToken == *result.NextForwardToken { | ||
| break | ||
| } | ||
|
|
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| nextToken = *result.NextForwardToken | ||
| } | ||
|
|
||
| if len(messages) == 0 { | ||
| return nil | ||
| } | ||
|
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| out, err := json.Marshal(messages) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| resp, err := http.Post("http://localhost/api/observability/ingestion/json", "image/jpeg", bytes.NewBuffer(out)) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if resp.StatusCode != 200 { | ||
| return fmt.Errorf("response code is not 200") | ||
| } | ||
|
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| fmt.Printf("Ingested log-group %s, stream %s: %d messages\n", logGroupName, logStreamWithoutRandom, len(messages)) | ||
|
|
||
| return nil | ||
| } |
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