79 lines
1.3 KiB
Go
79 lines
1.3 KiB
Go
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package main
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import (
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"bytes"
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"encoding/json"
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"fmt"
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"net/http"
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"time"
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)
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type LokiLogger struct {
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url string
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client *http.Client
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}
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func NewLokiLogger(url string) *LokiLogger {
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return &LokiLogger{
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url: url,
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client: &http.Client{Timeout: 10 * time.Second},
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}
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}
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type logEntry struct {
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Timestamp int64 `json:"ts"`
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Line string `json:"line"`
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}
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type logStream struct {
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Labels string `json:"labels"`
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Entries []logEntry `json:"entries"`
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}
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type pushRequest struct {
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Streams []logStream `json:"streams"`
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}
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func (l *LokiLogger) Log(label string, message string) error {
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entry := logEntry{
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Timestamp: time.Now().UnixNano(),
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Line: message,
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}
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stream := logStream{
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Labels: label,
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Entries: []logEntry{entry},
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}
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reqBody := pushRequest{
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Streams: []logStream{stream},
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}
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body, err := json.Marshal(reqBody)
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if err != nil {
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return err
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}
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req, err := http.NewRequest("POST", l.url, bytes.NewBuffer(body))
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if err != nil {
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return err
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}
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req.Header.Set("Content-Type", "application/json")
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resp, err := l.client.Do(req)
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if err != nil {
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return err
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusNoContent {
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return fmt.Errorf("unexpected status code: %d", resp.StatusCode)
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}
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return nil
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}
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func (l *LokiLogger) Close() {
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// No cleanup needed for pure HTTP client
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}
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