feat: disable runner debug logs by default

Author: nicktrn

.changeset/runner-send-debug-logs-gate.md

@@ -0,0 +1,5 @@
+---
+"trigger.dev": patch
+---
+
+Runner debug logs are now disabled by default. Set `TRIGGER_SEND_RUN_DEBUG_LOGS=true` to re-enable them.

apps/supervisor/src/index.ts

@@ -157,6 +157,7 @@ class ManagedSupervisor {
           instanceName: env.TRIGGER_WORKER_INSTANCE_NAME,
           otelEndpoint: env.OTEL_EXPORTER_OTLP_ENDPOINT,
           prettyLogs: env.RUNNER_PRETTY_LOGS,
+          sendRunDebugLogs: env.SEND_RUN_DEBUG_LOGS,
         },
         createRetry: {
           maxAttempts: env.COMPUTE_INSTANCE_CREATE_MAX_ATTEMPTS,

apps/supervisor/src/workloadManager/compute.ts

@@ -75,6 +75,7 @@ type ComputeWorkloadManagerOptions = WorkloadManagerOptions & {
     instanceName: string;
     otelEndpoint: string;
     prettyLogs: boolean;
+    sendRunDebugLogs: boolean;
   };
   createRetry?: {
     maxAttempts: number;
@@ -162,6 +163,7 @@ export class ComputeWorkloadManager implements WorkloadManager {
       TRIGGER_MACHINE_CPU: String(opts.machine.cpu),
       TRIGGER_MACHINE_MEMORY: String(opts.machine.memory),
       PRETTY_LOGS: String(this.opts.runner.prettyLogs),
+      TRIGGER_SEND_RUN_DEBUG_LOGS: String(this.opts.runner.sendRunDebugLogs),
     };
 
     if (this.opts.warmStartUrl) {

apps/supervisor/src/workloadManager/docker.ts

@@ -84,6 +84,7 @@ export class DockerWorkloadManager implements WorkloadManager {
       `TRIGGER_MACHINE_CPU=${opts.machine.cpu}`,
       `TRIGGER_MACHINE_MEMORY=${opts.machine.memory}`,
       `PRETTY_LOGS=${env.RUNNER_PRETTY_LOGS}`,
+      `TRIGGER_SEND_RUN_DEBUG_LOGS=${env.SEND_RUN_DEBUG_LOGS}`,
     ];
 
     if (this.opts.warmStartUrl) {

apps/supervisor/src/workloadManager/kubernetes.ts

@@ -208,6 +208,10 @@ export class KubernetesWorkloadManager implements WorkloadManager {
                     name: "TRIGGER_MACHINE_MEMORY",
                     value: `${opts.machine.memory}`,
                   },
+                  {
+                    name: "TRIGGER_SEND_RUN_DEBUG_LOGS",
+                    value: `${env.SEND_RUN_DEBUG_LOGS}`,
+                  },
                   {
                     name: "LIMITS_CPU",
                     valueFrom: {

packages/cli-v3/src/entryPoints/managed/env.ts

@@ -8,6 +8,13 @@ const DateEnv = z
   .transform((val) => new Date(parseInt(val, 10)))
   .pipe(z.date());
 
+const BoolEnv = z.preprocess((val) => {
+  if (typeof val !== "string") {
+    return val;
+  }
+  return ["true", "1"].includes(val.toLowerCase().trim());
+}, z.boolean());
+
 // All IDs are friendly IDs
 const Env = z.object({
   // Set at build time
@@ -47,6 +54,9 @@ const Env = z.object({
   TRIGGER_SNAPSHOT_POLL_INTERVAL_SECONDS: z.coerce.number().default(5),
   TRIGGER_SUCCESS_EXIT_CODE: z.coerce.number().default(0),
   TRIGGER_FAILURE_EXIT_CODE: z.coerce.number().default(1),
+
+  // Gates the per-log-line debug-log POST to the supervisor; off by default
+  TRIGGER_SEND_RUN_DEBUG_LOGS: BoolEnv.default(false),
 });
 
 type Env = z.infer<typeof Env>;
@@ -136,6 +146,9 @@ export class RunnerEnv {
   get TRIGGER_FAILURE_EXIT_CODE() {
     return this.env.TRIGGER_FAILURE_EXIT_CODE;
   }
+  get TRIGGER_SEND_RUN_DEBUG_LOGS() {
+    return this.env.TRIGGER_SEND_RUN_DEBUG_LOGS;
+  }
   get TRIGGER_HEARTBEAT_INTERVAL_SECONDS() {
     return this.env.TRIGGER_HEARTBEAT_INTERVAL_SECONDS;
   }

packages/cli-v3/src/entryPoints/managed/logger.ts

@@ -55,6 +55,11 @@ export class ManagedRunLogger implements RunLogger {
       this.logger.log(message, mergedProperties);
     }
 
+    // Skip the per-log-line POST to the supervisor unless explicitly enabled
+    if (!this.env.TRIGGER_SEND_RUN_DEBUG_LOGS) {
+      return;
+    }
+
     const flattenedProperties = flattenAttributes(
       mergedProperties
     ) satisfies WorkloadDebugLogRequestBody["properties"];