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package telemetry |
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import ( |
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"context" |
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"errors" |
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"fmt" |
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"log/slog" |
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"os" |
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"runtime" |
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"github.com/Permify/sloggcp" |
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"github.com/agoda-com/opentelemetry-go/otelslog" |
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"go.opentelemetry.io/otel/attribute" |
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sdk "github.com/agoda-com/opentelemetry-logs-go/sdk/logs" |
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"go.opentelemetry.io/otel/sdk/resource" |
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semconv "go.opentelemetry.io/otel/semconv/v1.10.0" |
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"github.com/Permify/permify/internal" |
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"github.com/Permify/permify/pkg/telemetry/logexporters" |
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) |
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// HandlerFactory - Create log handler according to given params |
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func HandlerFactory(name, endpoint string, insecure bool, urlpath string, headers map[string]string, protocol string, level slog.Leveler) (slog.Handler, error) { |
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switch name { |
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case "otlp", "otlp-http", "otlp-grpc": |
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return NewOTLPHandler(endpoint, insecure, urlpath, headers, protocol, level.Level()) |
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case "gcp": |
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return NewGCPHandler(headers, level) |
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default: |
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return nil, fmt.Errorf("%s log handler is unsupported", name) |
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} |
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} |
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func NewOTLPHandler(endpoint string, insecure bool, urlPath string, headers map[string]string, protocol string, level slog.Leveler) (slog.Handler, error) { |
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// Set up the OTLP exporter based on the protocol |
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exporter, err := logexporters.ExporterFactory("otlp", endpoint, insecure, urlPath, headers, protocol) |
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if err != nil { |
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return nil, errors.New("failed to create OTLP exporter") |
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} |
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// Initialize the OpenTelemetry handler with the exporter |
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lp := NewLog(exporter) |
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otelHandler := otelslog.NewOtelHandler(lp, &otelslog.HandlerOptions{ |
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Level: level, |
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}) |
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// Shut down the exporter when needed |
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return otelHandler, nil |
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} |
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func NewGCPHandler(headers map[string]string, level slog.Leveler) (slog.Handler, error) { |
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// Retrieve Google Cloud credentials from headers |
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creds := headers["google-application-credentials"] |
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projectId := headers["google-cloud-project"] |
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if projectId == "" { |
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return nil, errors.New("missing GOOGLE_CLOUD_PROJECT in headers") |
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} |
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// Set credentials for Google Cloud access |
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if creds != "" { |
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if err := os.Setenv("GOOGLE_APPLICATION_CREDENTIALS", creds); err != nil { |
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return nil, err |
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} |
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} |
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// Initialize GCP-specific log handler |
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logName := internal.Identifier |
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gcpHandler := sloggcp.NewGoogleCloudSlogHandler(context.Background(), projectId, logName, &slog.HandlerOptions{ |
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Level: level, |
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}) |
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return gcpHandler, nil |
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} |
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// NewLog - Creates new log |
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func NewLog(exporter sdk.LogRecordExporter) *sdk.LoggerProvider { |
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// Create a logger provider with the exporter and resource |
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lp := sdk.NewLoggerProvider( |
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sdk.WithBatcher(exporter), |
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sdk.WithResource(newResource()), |
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) |
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// Return the logger provider |
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return lp |
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} |
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func newResource() *resource.Resource { |
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hostName, _ := os.Hostname() |
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return resource.NewWithAttributes( |
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semconv.SchemaURL, |
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semconv.ServiceNameKey.String("permify"), |
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semconv.HostNameKey.String(hostName), |
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attribute.String("id", internal.Identifier), |
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attribute.String("project.id", internal.Identifier), |
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attribute.String("version", internal.Version), |
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attribute.String("host_name", hostName), |
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attribute.String("os", runtime.GOOS), |
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attribute.String("arch", runtime.GOARCH), |
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) |
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} |
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Permify /
permify
