refactor: add Effect logger for motel observability (#21954)

packages/opencode/src/session/processor.ts

@@ -6,7 +6,7 @@ import { Config } from "@/config/config"
 import { Permission } from "@/permission"
 import { Plugin } from "@/plugin"
 import { Snapshot } from "@/snapshot"
-import { Log } from "@/util/log"
+import { EffectLogger } from "@/effect/logger"
 import { Session } from "."
 import { LLM } from "./llm"
 import { MessageV2 } from "./message-v2"
@@ -23,7 +23,7 @@ import { isRecord } from "@/util/record"
 
 export namespace SessionProcessor {
   const DOOM_LOOP_THRESHOLD = 3
-  const log = Log.create({ service: "session.processor" })
+  const log = EffectLogger.create({ service: "session.processor" })
 
   export type Result = "compact" | "stop" | "continue"
 
@@ -121,6 +121,7 @@ export namespace SessionProcessor {
           reasoningMap: {},
         }
         let aborted = false
+        const slog = log.with({ sessionID: input.sessionID, messageID: input.assistantMessage.id })
 
         const parse = (e: unknown) =>
           MessageV2.fromError(e, {
@@ -448,7 +449,7 @@ export namespace SessionProcessor {
               return
 
             default:
-              log.info("unhandled", { ...value })
+              yield* slog.info("unhandled", { event: value.type, value })
               return
           }
         })
@@ -514,7 +515,7 @@ export namespace SessionProcessor {
         })
 
         const halt = Effect.fn("SessionProcessor.halt")(function* (e: unknown) {
-          log.error("process", { error: e, stack: e instanceof Error ? e.stack : undefined })
+          yield* slog.error("process", { error: errorMessage(e), stack: e instanceof Error ? e.stack : undefined })
           const error = parse(e)
           if (MessageV2.ContextOverflowError.isInstance(error)) {
             ctx.needsCompaction = true
@@ -530,7 +531,7 @@ export namespace SessionProcessor {
         })
 
         const process = Effect.fn("SessionProcessor.process")(function* (streamInput: LLM.StreamInput) {
-          log.info("process")
+          yield* slog.info("process")
           ctx.needsCompaction = false
           ctx.shouldBreak = (yield* config.get()).experimental?.continue_loop_on_deny !== true
 

packages/opencode/src/session/prompt.ts

@@ -44,6 +44,7 @@ import { Truncate } from "@/tool/truncate"
 import { decodeDataUrl } from "@/util/data-url"
 import { Process } from "@/util/process"
 import { Cause, Effect, Exit, Layer, Option, Scope, ServiceMap } from "effect"
+import { EffectLogger } from "@/effect/logger"
 import { InstanceState } from "@/effect/instance-state"
 import { makeRuntime } from "@/effect/run-service"
 import { TaskTool, type TaskPromptOps } from "@/tool/task"
@@ -64,6 +65,7 @@ const STRUCTURED_OUTPUT_SYSTEM_PROMPT = `IMPORTANT: The user has requested struc
 
 export namespace SessionPrompt {
   const log = Log.create({ service: "session.prompt" })
+  const elog = EffectLogger.create({ service: "session.prompt" })
 
   export interface Interface {
     readonly cancel: (sessionID: SessionID) => Effect.Effect<void>
@@ -102,7 +104,7 @@ export namespace SessionPrompt {
       const revert = yield* SessionRevert.Service
 
       const cancel = Effect.fn("SessionPrompt.cancel")(function* (sessionID: SessionID) {
-        log.info("cancel", { sessionID })
+        yield* elog.info("cancel", { sessionID })
         yield* state.cancel(sessionID)
       })
 
@@ -196,11 +198,7 @@ export namespace SessionPrompt {
         const t = cleaned.length > 100 ? cleaned.substring(0, 97) + "..." : cleaned
         yield* sessions
           .setTitle({ sessionID: input.session.id, title: t })
-          .pipe(
-            Effect.catchCause((cause) =>
-              Effect.sync(() => log.error("failed to generate title", { error: Cause.squash(cause) })),
-            ),
-          )
+          .pipe(Effect.catchCause((cause) => elog.error("failed to generate title", { error: Cause.squash(cause) })))
       })
 
       const insertReminders = Effect.fn("SessionPrompt.insertReminders")(function* (input: {
@@ -1302,13 +1300,14 @@ NOTE: At any point in time through this workflow you should feel free to ask the
       const runLoop: (sessionID: SessionID) => Effect.Effect<MessageV2.WithParts> = Effect.fn("SessionPrompt.run")(
         function* (sessionID: SessionID) {
           const ctx = yield* InstanceState.context
+          const slog = elog.with({ sessionID })
           let structured: unknown | undefined
           let step = 0
           const session = yield* sessions.get(sessionID)
 
           while (true) {
             yield* status.set(sessionID, { type: "busy" })
-            log.info("loop", { step, sessionID })
+            yield* slog.info("loop", { step })
 
             let msgs = yield* MessageV2.filterCompactedEffect(sessionID)
 
@@ -1344,7 +1343,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
               !hasToolCalls &&
               lastUser.id < lastAssistant.id
             ) {
-              log.info("exiting loop", { sessionID })
+              yield* slog.info("exiting loop")
               break
             }
 
@@ -1540,7 +1539,7 @@ NOTE: At any point in time through this workflow you should feel free to ask the
       )
 
       const command = Effect.fn("SessionPrompt.command")(function* (input: CommandInput) {
-        log.info("command", input)
+        yield* elog.info("command", { sessionID: input.sessionID, command: input.command, agent: input.agent })
         const cmd = yield* commands.get(input.command)
         if (!cmd) {
           const available = (yield* commands.list()).map((c) => c.name)