// @effect-diagnostics nodeBuiltinImport:off/** * Provider event logger helper. * * Best-effort writer for observability logs. Each record is formatted as a * single effect-style text line in a thread-scoped file. Failures are * downgraded to warnings so provider runtime behavior is unaffected. */import fs from "node:fs";import path from "node:path"; import type { ThreadId } from "@t3tools/contracts";import { RotatingFileSink } from "@t3tools/shared/logging";import * as Effect from "effect/Effect";import * as Exit from "effect/Exit";import * as Logger from "effect/Logger";import * as Scope from "effect/Scope";import * as SynchronizedRef from "effect/SynchronizedRef"; import { toSafeThreadAttachmentSegment } from "../../attachmentStore.ts"; const DEFAULT_MAX_BYTES = 10 * 1024 * 1024;const DEFAULT_MAX_FILES = 10;const DEFAULT_BATCH_WINDOW_MS = 200;const GLOBAL_THREAD_SEGMENT = "_global";const LOG_SCOPE = "provider-observability"; export type EventNdjsonStream = "native" | "canonical" | "orchestration"; export interface EventNdjsonLogger { readonly filePath: string; write: (event: unknown, threadId: ThreadId | null) => Effect.Effect<void>; close: () => Effect.Effect<void>;} export interface EventNdjsonLoggerOptions { readonly stream: EventNdjsonStream; readonly maxBytes?: number; readonly maxFiles?: number; readonly batchWindowMs?: number;} interface ThreadWriter { writeMessage: (message: string) => Effect.Effect<void>; close: () => Effect.Effect<void>;} interface LoggerState { readonly threadWriters: Map<string, ThreadWriter>; readonly failedSegments: Set<string>;} function logWarning(message: string, context: Record<string, unknown>): Effect.Effect<void> { return Effect.logWarning(message, context).pipe(Effect.annotateLogs({ scope: LOG_SCOPE }));} function resolveThreadSegment(raw: string | null | undefined): string { const normalized = typeof raw === "string" ? toSafeThreadAttachmentSegment(raw) : null; return normalized ?? GLOBAL_THREAD_SEGMENT;} function formatLoggerMessage(message: unknown): string { if (Array.isArray(message)) { return message.map((part) => (typeof part === "string" ? part : String(part))).join(" "); } return typeof message === "string" ? message : String(message);} function makeLineLogger(streamLabel: string): Logger.Logger<unknown, string> { return Logger.make( ({ date, message }) => `[${date.toISOString()}] ${streamLabel}: ${formatLoggerMessage(message)}\n`, );} function resolveStreamLabel(stream: EventNdjsonStream): string { switch (stream) { case "native": return "NTIVE"; case "canonical": case "orchestration": default: return "CANON"; }} const toLogMessage = Effect.fn("toLogMessage")(function* ( event: unknown,): Effect.fn.Return<string | undefined> { const serialized = yield* Effect.sync(() => { try { return { ok: true as const, value: JSON.stringify(event) }; } catch (error) { return { ok: false as const, error }; } }); if (!serialized.ok) { yield* logWarning("failed to serialize provider event log record", { error: serialized.error, }); return undefined; } if (typeof serialized.value !== "string") { return undefined; } return serialized.value;}); const makeThreadWriter = Effect.fn("makeThreadWriter")(function* (input: { readonly filePath: string; readonly maxBytes: number; readonly maxFiles: number; readonly batchWindowMs: number; readonly streamLabel: string;}): Effect.fn.Return<ThreadWriter | undefined> { const sinkResult = yield* Effect.sync(() => { try { return { ok: true as const, sink: new RotatingFileSink({ filePath: input.filePath, maxBytes: input.maxBytes, maxFiles: input.maxFiles, throwOnError: true, }), }; } catch (error) { return { ok: false as const, error }; } }); if (!sinkResult.ok) { yield* logWarning("failed to initialize provider thread log file", { filePath: input.filePath, error: sinkResult.error, }); return undefined; } const sink = sinkResult.sink; const scope = yield* Scope.make(); const lineLogger = makeLineLogger(input.streamLabel); const batchedLogger = yield* Logger.batched(lineLogger, { window: input.batchWindowMs, flush: Effect.fn("makeThreadWriter.flush")(function* (messages) { const flushResult = yield* Effect.sync(() => { try { for (const message of messages) { sink.write(message); } return { ok: true as const }; } catch (error) { return { ok: false as const, error }; } }); if (!flushResult.ok) { yield* logWarning("provider event log batch flush failed", { filePath: input.filePath, error: flushResult.error, }); } }), }).pipe(Effect.provideService(Scope.Scope, scope)); const loggerLayer = Logger.layer([batchedLogger], { mergeWithExisting: false }); return { writeMessage(message: string) { return Effect.log(message).pipe(Effect.provide(loggerLayer)); }, close() { return Scope.close(scope, Exit.void); }, } satisfies ThreadWriter;}); export const makeEventNdjsonLogger = Effect.fn("makeEventNdjsonLogger")(function* ( filePath: string, options: EventNdjsonLoggerOptions,): Effect.fn.Return<EventNdjsonLogger | undefined> { const maxBytes = options.maxBytes ?? DEFAULT_MAX_BYTES; const maxFiles = options.maxFiles ?? DEFAULT_MAX_FILES; const batchWindowMs = options.batchWindowMs ?? DEFAULT_BATCH_WINDOW_MS; const streamLabel = resolveStreamLabel(options.stream); const directoryReady = yield* Effect.sync(() => { try { fs.mkdirSync(path.dirname(filePath), { recursive: true }); return true; } catch (error) { return { ok: false as const, error }; } }); if (directoryReady !== true) { yield* logWarning("failed to create provider event log directory", { filePath, error: directoryReady.error, }); return undefined; } const stateRef = yield* SynchronizedRef.make<LoggerState>({ threadWriters: new Map(), failedSegments: new Set(), }); const resolveThreadWriter = Effect.fn("resolveThreadWriter")(function* ( threadSegment: string, ): Effect.fn.Return<ThreadWriter | undefined> { return yield* SynchronizedRef.modifyEffect(stateRef, (state) => { if (state.failedSegments.has(threadSegment)) { return Effect.succeed([undefined, state] as const); } const existing = state.threadWriters.get(threadSegment); if (existing) { return Effect.succeed([existing, state] as const); } return makeThreadWriter({ filePath: path.join(path.dirname(filePath), `${threadSegment}.log`), maxBytes, maxFiles, batchWindowMs, streamLabel, }).pipe( Effect.map((writer) => { if (!writer) { const nextFailedSegments = new Set(state.failedSegments); nextFailedSegments.add(threadSegment); return [ undefined, { ...state, failedSegments: nextFailedSegments, }, ] as const; } const nextThreadWriters = new Map(state.threadWriters); nextThreadWriters.set(threadSegment, writer); return [ writer, { ...state, threadWriters: nextThreadWriters, }, ] as const; }), ); }); }); const write = Effect.fn("write")(function* (event: unknown, threadId: ThreadId | null) { const threadSegment = resolveThreadSegment(threadId); const message = yield* toLogMessage(event); if (!message) { return; } const writer = yield* resolveThreadWriter(threadSegment); if (!writer) { return; } yield* writer.writeMessage(message); }); const close = Effect.fn("close")(function* () { yield* SynchronizedRef.modifyEffect(stateRef, (state) => Effect.gen(function* () { for (const writer of state.threadWriters.values()) { yield* writer.close(); } return [ undefined, { threadWriters: new Map<string, ThreadWriter>(), failedSegments: new Set<string>(), }, ] as const; }), ); }); return { filePath, write, close, } satisfies EventNdjsonLogger;});
// @effect-diagnostics nodeBuiltinImport:off
/**
* Provider event logger helper.
*
* Best-effort writer for observability logs. Each record is formatted as a
* single effect-style text line in a thread-scoped file. Failures are
* downgraded to warnings so provider runtime behavior is unaffected.
*/
import fs from "node:fs";
import path from "node:path";
import type { ThreadId } from "@t3tools/contracts";
import { RotatingFileSink } from "@t3tools/shared/logging";
import * as Effect from "effect/Effect";
import * as Exit from "effect/Exit";
import * as Logger from "effect/Logger";
import * as Scope from "effect/Scope";
import * as SynchronizedRef from "effect/SynchronizedRef";
import { toSafeThreadAttachmentSegment } from "../../attachmentStore.ts";
const DEFAULT_MAX_BYTES = 10 * 1024 * 1024;
const DEFAULT_MAX_FILES = 10;
const DEFAULT_BATCH_WINDOW_MS = 200;
const GLOBAL_THREAD_SEGMENT = "_global";
const LOG_SCOPE = "provider-observability";
export type EventNdjsonStream = "native" | "canonical" | "orchestration";
export interface EventNdjsonLogger {
readonly filePath: string;
write: (event: unknown, threadId: ThreadId | null) => Effect.Effect<void>;
close: () => Effect.Effect<void>;
}
export interface EventNdjsonLoggerOptions {
readonly stream: EventNdjsonStream;
readonly maxBytes?: number;
readonly maxFiles?: number;
readonly batchWindowMs?: number;
}
interface ThreadWriter {
writeMessage: (message: string) => Effect.Effect<void>;
close: () => Effect.Effect<void>;
}
interface LoggerState {
readonly threadWriters: Map<string, ThreadWriter>;
readonly failedSegments: Set<string>;
}
function logWarning(message: string, context: Record<string, unknown>): Effect.Effect<void> {
return Effect.logWarning(message, context).pipe(Effect.annotateLogs({ scope: LOG_SCOPE }));
}
function resolveThreadSegment(raw: string | null | undefined): string {
const normalized = typeof raw === "string" ? toSafeThreadAttachmentSegment(raw) : null;
return normalized ?? GLOBAL_THREAD_SEGMENT;
}
function formatLoggerMessage(message: unknown): string {
if (Array.isArray(message)) {
return message.map((part) => (typeof part === "string" ? part : String(part))).join(" ");
}
return typeof message === "string" ? message : String(message);
}
function makeLineLogger(streamLabel: string): Logger.Logger<unknown, string> {
return Logger.make(
({ date, message }) =>
`[${date.toISOString()}] ${streamLabel}: ${formatLoggerMessage(message)}\n`,
);
}
function resolveStreamLabel(stream: EventNdjsonStream): string {
switch (stream) {
case "native":
return "NTIVE";
case "canonical":
case "orchestration":
default:
return "CANON";
}
}
const toLogMessage = Effect.fn("toLogMessage")(function* (
event: unknown,
): Effect.fn.Return<string | undefined> {
const serialized = yield* Effect.sync(() => {
try {
return { ok: true as const, value: JSON.stringify(event) };
} catch (error) {
return { ok: false as const, error };
}
});
if (!serialized.ok) {
yield* logWarning("failed to serialize provider event log record", {
error: serialized.error,
});
return undefined;
}
if (typeof serialized.value !== "string") {
return undefined;
}
return serialized.value;
});
const makeThreadWriter = Effect.fn("makeThreadWriter")(function* (input: {
readonly filePath: string;
readonly maxBytes: number;
readonly maxFiles: number;
readonly batchWindowMs: number;
readonly streamLabel: string;
}): Effect.fn.Return<ThreadWriter | undefined> {
const sinkResult = yield* Effect.sync(() => {
try {
return {
ok: true as const,
sink: new RotatingFileSink({
filePath: input.filePath,
maxBytes: input.maxBytes,
maxFiles: input.maxFiles,
throwOnError: true,
}),
};
} catch (error) {
return { ok: false as const, error };
}
});
if (!sinkResult.ok) {
yield* logWarning("failed to initialize provider thread log file", {
filePath: input.filePath,
error: sinkResult.error,
});
return undefined;
}
const sink = sinkResult.sink;
const scope = yield* Scope.make();
const lineLogger = makeLineLogger(input.streamLabel);
const batchedLogger = yield* Logger.batched(lineLogger, {
window: input.batchWindowMs,
flush: Effect.fn("makeThreadWriter.flush")(function* (messages) {
const flushResult = yield* Effect.sync(() => {
try {
for (const message of messages) {
sink.write(message);
}
return { ok: true as const };
} catch (error) {
return { ok: false as const, error };
}
});
if (!flushResult.ok) {
yield* logWarning("provider event log batch flush failed", {
filePath: input.filePath,
error: flushResult.error,
});
}
}),
}).pipe(Effect.provideService(Scope.Scope, scope));
const loggerLayer = Logger.layer([batchedLogger], { mergeWithExisting: false });
return {
writeMessage(message: string) {
return Effect.log(message).pipe(Effect.provide(loggerLayer));
},
close() {
return Scope.close(scope, Exit.void);
},
} satisfies ThreadWriter;
});
export const makeEventNdjsonLogger = Effect.fn("makeEventNdjsonLogger")(function* (
filePath: string,
options: EventNdjsonLoggerOptions,
): Effect.fn.Return<EventNdjsonLogger | undefined> {
const maxBytes = options.maxBytes ?? DEFAULT_MAX_BYTES;
const maxFiles = options.maxFiles ?? DEFAULT_MAX_FILES;
const batchWindowMs = options.batchWindowMs ?? DEFAULT_BATCH_WINDOW_MS;
const streamLabel = resolveStreamLabel(options.stream);
const directoryReady = yield* Effect.sync(() => {
try {
fs.mkdirSync(path.dirname(filePath), { recursive: true });
return true;
} catch (error) {
return { ok: false as const, error };
}
});
if (directoryReady !== true) {
yield* logWarning("failed to create provider event log directory", {
filePath,
error: directoryReady.error,
});
return undefined;
}
const stateRef = yield* SynchronizedRef.make<LoggerState>({
threadWriters: new Map(),
failedSegments: new Set(),
});
const resolveThreadWriter = Effect.fn("resolveThreadWriter")(function* (
threadSegment: string,
): Effect.fn.Return<ThreadWriter | undefined> {
return yield* SynchronizedRef.modifyEffect(stateRef, (state) => {
if (state.failedSegments.has(threadSegment)) {
return Effect.succeed([undefined, state] as const);
}
const existing = state.threadWriters.get(threadSegment);
if (existing) {
return Effect.succeed([existing, state] as const);
}
return makeThreadWriter({
filePath: path.join(path.dirname(filePath), `${threadSegment}.log`),
maxBytes,
maxFiles,
batchWindowMs,
streamLabel,
}).pipe(
Effect.map((writer) => {
if (!writer) {
const nextFailedSegments = new Set(state.failedSegments);
nextFailedSegments.add(threadSegment);
return [
undefined,
{
...state,
failedSegments: nextFailedSegments,
},
] as const;
}
const nextThreadWriters = new Map(state.threadWriters);
nextThreadWriters.set(threadSegment, writer);
return [
writer,
{
...state,
threadWriters: nextThreadWriters,
},
] as const;
}),
);
});
});
const write = Effect.fn("write")(function* (event: unknown, threadId: ThreadId | null) {
const threadSegment = resolveThreadSegment(threadId);
const message = yield* toLogMessage(event);
if (!message) {
return;
}
const writer = yield* resolveThreadWriter(threadSegment);
if (!writer) {
return;
}
yield* writer.writeMessage(message);
});
const close = Effect.fn("close")(function* () {
yield* SynchronizedRef.modifyEffect(stateRef, (state) =>
Effect.gen(function* () {
for (const writer of state.threadWriters.values()) {
yield* writer.close();
}
return [
undefined,
{
threadWriters: new Map<string, ThreadWriter>(),
failedSegments: new Set<string>(),
},
] as const;
}),
);
});
return {
filePath,
write,
close,
} satisfies EventNdjsonLogger;
});