feat(rivetkit): gcp log level format for rivet compute

rivetkit-typescript/packages/rivetkit/src/common/gcp-log-helper.ts

@@ -0,0 +1,35 @@
+import type { LoggerOptions } from "pino";
+
+// Lightweight version of @google-cloud/pino-logging-gcp-config.
+// This only maps pino levels to GCP severity for compute environments.
+
+const PINO_TO_GCP_SEVERITY: Record<string, string> = {
+	trace: "DEBUG",
+	debug: "DEBUG",
+	info: "INFO",
+	warn: "WARNING",
+	error: "ERROR",
+	fatal: "CRITICAL",
+};
+
+export function pinoLevelToGcpSeverity(
+	pinoSeverityLabel: string,
+	pinoSeverityLevel: number,
+): Record<string, unknown> {
+	const severity =
+		PINO_TO_GCP_SEVERITY[pinoSeverityLabel] ?? "INFO";
+	return { severity, level: pinoSeverityLevel };
+}
+
+export function createGcpLoggingPinoConfig(
+	pinoLoggerOptionsMixin?: LoggerOptions,
+): LoggerOptions {
+	const formattersMixin = pinoLoggerOptionsMixin?.formatters;
+	return {
+		...pinoLoggerOptionsMixin,
+		formatters: {
+			...formattersMixin,
+			level: pinoLevelToGcpSeverity,
+		},
+	};
+}

rivetkit-typescript/packages/rivetkit/src/common/log.ts

@@ -5,13 +5,19 @@ import {
 	stdTimeFunctions,
 } from "pino";
 import { z } from "zod/v4";
-import { getLogLevel, getLogTarget, getLogTimestamp } from "@/utils/env-vars";
+import {
+	getLogLevel,
+	getLogTarget,
+	getLogTimestamp,
+	getRivetComputeEnabled,
+} from "@/utils/env-vars";
 import {
 	castToLogValue,
 	formatTimestamp,
 	LOGGER_CONFIG,
 	stringify,
 } from "./logfmt";
+import { createGcpLoggingPinoConfig } from "./gcp-log-helper";
 
 export type { Logger } from "pino";
 
@@ -116,6 +122,19 @@ export function configureDefaultLogger(logLevel?: LogLevel) {
 		configuredLogLevel = logLevel;
 	}
 
+	if (getRivetComputeEnabled() && typeof window === "undefined") {
+		baseLogger = pino(
+			createGcpLoggingPinoConfig({
+				level: getPinoLevel(logLevel),
+				messageKey: "msg",
+				base: {},
+				timestamp: getLogTimestamp() ? stdTimeFunctions.epochTime : false,
+			}),
+		);
+		loggerCache.clear();
+		return;
+	}
+
 	baseLogger = pino({
 		level: getPinoLevel(logLevel),
 		messageKey: "msg",

rivetkit-typescript/packages/rivetkit/src/utils/env-vars.ts

@@ -45,6 +45,10 @@ export const getRivetkitInspectorDisable = (): boolean =>
 export const getRivetkitStoragePath = (): string | undefined =>
 	getEnvUniversal("RIVETKIT_STORAGE_PATH");
 
+// Internal compute marker for backend logging. Intentionally undocumented for now.
+export const getRivetComputeEnabled = (): boolean =>
+	getEnvUniversal("_RIVET_COMPUTE_ENABLED") === "1";
+
 // Logging configuration
 // DEPRECATED: LOG_LEVEL will be removed in a future version
 export const getLogLevel = (): string | undefined =>