import { setTimeout as delay } from "node:timers/promises" ;
import type { Command } from "commander" ;
import { buildGatewayConnectionDetails } from "../gateway/call.js" ;
import { isLoopbackHost } from "../gateway/net.js" ;
import { readConnectPairingRequiredMessage } from "../gateway/protocol/connect-error-details.js" ;
import { formatErrorMessage } from "../infra/errors.js" ;
import { readConfiguredLogTail } from "../logging/log-tail.js" ;
import { parseLogLine } from "../logging/parse-log-line.js" ;
import { formatTimestamp, isValidTimeZone } from "../logging/timestamps.js" ;
import { normalizeLowercaseStringOrEmpty } from "../shared/string-coerce.js" ;
import { formatDocsLink } from "../terminal/links.js" ;
import { clearActiveProgressLine } from "../terminal/progress-line.js" ;
import { createSafeStreamWriter } from "../terminal/stream-writer.js" ;
import { colorize, isRich, theme } from "../terminal/theme.js" ;
import { formatCliCommand } from "./command-format.js" ;
import { addGatewayClientOptions, callGatewayFromCli } from "./gateway-rpc.js" ;
type LogsCliRuntimeModule = typeof import ("./logs-cli.runtime.js" );
let logsCliRuntimePromise: Promise<LogsCliRuntimeModule> | undefined;
async function loadLogsCliRuntime(): Promise<LogsCliRuntimeModule> {
logsCliRuntimePromise ??= import ("./logs-cli.runtime.js" );
return logsCliRuntimePromise;
}
type LogsTailPayload = {
file?: string;
cursor?: number;
size?: number;
lines?: string[];
truncated?: boolean ;
reset?: boolean ;
localFallback?: boolean ;
};
type LogsCliOptions = {
limit?: string;
maxBytes?: string;
follow?: boolean ;
interval?: string;
json?: boolean ;
plain?: boolean ;
color?: boolean ;
localTime?: boolean ;
url?: string;
token?: string;
timeout?: string;
expectFinal?: boolean ;
};
const LOCAL_FALLBACK_NOTICE = "Gateway pairing required; reading local log file instead." ;
function parsePositiveInt(value: string | undefined, fallback: number): number {
if (!value) {
return fallback;
}
const parsed = Number.parseInt(value, 10 );
return Number.isFinite(parsed) && parsed > 0 ? parsed : fallback;
}
async function fetchLogs(
opts: LogsCliOptions,
cursor: number | undefined,
showProgress: boolean ,
): Promise<LogsTailPayload> {
const limit = parsePositiveInt(opts.limit, 200 );
const maxBytes = parsePositiveInt(opts.maxBytes, 250 _000 );
try {
const payload = await callGatewayFromCli(
"logs.tail" ,
opts,
{ cursor, limit, maxBytes },
{ progress: showProgress },
);
if (!payload || typeof payload !== "object" ) {
throw new Error("Unexpected logs.tail response" );
}
return payload as LogsTailPayload;
} catch (error) {
if (!shouldUseLocalLogsFallback(opts, error)) {
throw error;
}
return {
...(await readConfiguredLogTail({ cursor, limit, maxBytes })),
localFallback: true ,
};
}
}
function normalizeErrorMessage(error: unknown): string {
if (error instanceof Error) {
return error.message;
}
return String(error);
}
function shouldUseLocalLogsFallback(opts: LogsCliOptions, error: unknown): boolean {
const message = normalizeLowercaseStringOrEmpty(normalizeErrorMessage(error));
if (!readConnectPairingRequiredMessage(message)) {
return false ;
}
if (typeof opts.url === "string" && opts.url.trim().length > 0 ) {
return false ;
}
const connection = buildGatewayConnectionDetails();
if (connection.urlSource !== "local loopback" ) {
return false ;
}
try {
return isLoopbackHost(new URL(connection.url).hostname);
} catch {
return false ;
}
}
export function formatLogTimestamp(
value?: string,
mode: "pretty" | "plain" = "plain" ,
localTime = false ,
) {
if (!value) {
return "" ;
}
const parsed = new Date(value);
if (Number.isNaN(parsed.getTime())) {
return value;
}
if (mode === "pretty" ) {
return formatTimestamp(parsed, { style: "short" , timeZone: localTime ? undefined : "UTC" });
}
return localTime ? formatTimestamp(parsed, { style: "long" }) : parsed.toISOString();
}
function formatLogLine(
raw: string,
opts: {
pretty: boolean ;
rich: boolean ;
localTime: boolean ;
},
): string {
const parsed = parseLogLine(raw);
if (!parsed) {
return raw;
}
const label = parsed.subsystem ?? parsed.module ?? "" ;
const time = formatLogTimestamp(parsed.time, opts.pretty ? "pretty" : "plain" , opts.localTime);
const level = parsed.level ?? "" ;
const levelLabel = level.padEnd(5 ).trim();
const message = parsed.message || parsed.raw;
if (!opts.pretty) {
return [time, level, label, message].filter(Boolean ).join(" " ).trim();
}
const timeLabel = colorize(opts.rich, theme.muted, time);
const labelValue = colorize(opts.rich, theme.accent, label);
const levelValue =
level === "error" || level === "fatal"
? colorize(opts.rich, theme.error, levelLabel)
: level === "warn"
? colorize(opts.rich, theme.warn, levelLabel)
: level === "debug" || level === "trace"
? colorize(opts.rich, theme.muted, levelLabel)
: colorize(opts.rich, theme.info, levelLabel);
const messageValue =
level === "error" || level === "fatal"
? colorize(opts.rich, theme.error, message)
: level === "warn"
? colorize(opts.rich, theme.warn, message)
: level === "debug" || level === "trace"
? colorize(opts.rich, theme.muted, message)
: colorize(opts.rich, theme.info, message);
const head = [timeLabel, levelValue, labelValue].filter(Boolean ).join(" " );
return [head, messageValue].filter(Boolean ).join(" " ).trim();
}
function createLogWriters() {
const writer = createSafeStreamWriter({
beforeWrite: () => clearActiveProgressLine(),
onBrokenPipe: (err, stream) => {
const code = err.code ?? "EPIPE" ;
const target = stream === process.stdout ? "stdout" : "stderr" ;
const message = `openclaw logs: output ${target} closed (${code}). Stopping tail.`;
try {
clearActiveProgressLine();
process.stderr.write(`${message}\n`);
} catch {
// ignore secondary failures while reporting the broken pipe
}
},
});
return {
logLine: (text: string) => writer.writeLine(process.stdout, text),
errorLine: (text: string) => writer.writeLine(process.stderr, text),
emitJsonLine: (payload: Record<string, unknown>, toStdErr = false ) =>
writer.write(toStdErr ? process.stderr : process.stdout, `${JSON.stringify(payload)}\n`),
};
}
async function emitGatewayError(
err: unknown,
opts: LogsCliOptions,
mode: "json" | "text" ,
rich: boolean ,
emitJsonLine: (payload: Record<string, unknown>, toStdErr?: boolean ) => boolean ,
errorLine: (text: string) => boolean ,
) {
const runtime = await loadLogsCliRuntime();
const message = "Gateway not reachable. Is it running and accessible?" ;
const hint = `Hint: run \`${formatCliCommand("openclaw doctor" )}\`.`;
const errorText = formatErrorMessage(err);
const details = runtime.buildGatewayConnectionDetails({ url: opts.url });
if (mode === "json" ) {
if (
!emitJsonLine(
{
type: "error" ,
message,
error: errorText,
details,
hint,
},
true ,
)
) {
return ;
}
return ;
}
if (!errorLine(colorize(rich, theme.error, message))) {
return ;
}
if (!errorLine(details.message)) {
return ;
}
errorLine(colorize(rich, theme.muted, hint));
}
export function registerLogsCli(program: Command) {
const logs = program
.command("logs" )
.description("Tail gateway file logs via RPC" )
.option("--limit <n>" , "Max lines to return" , "200" )
.option("--max-bytes <n>" , "Max bytes to read" , "250000" )
.option("--follow" , "Follow log output" , false )
.option("--interval <ms>" , "Polling interval in ms" , "1000" )
.option("--json" , "Emit JSON log lines" , false )
.option("--plain" , "Plain text output (no ANSI styling)" , false )
.option("--no-color" , "Disable ANSI colors" )
.option("--local-time" , "Display timestamps in local timezone" , false )
.addHelpText(
"after" ,
() =>
`\n${theme.muted("Docs:" )} ${formatDocsLink("/cli/logs" , "docs.openclaw.ai/cli/logs" )}\n`,
);
addGatewayClientOptions(logs);
logs.action(async (opts: LogsCliOptions) => {
const { logLine, errorLine, emitJsonLine } = createLogWriters();
const interval = parsePositiveInt(opts.interval, 1000 );
let cursor: number | undefined;
let first = true ;
const jsonMode = Boolean (opts.json);
const pretty = !jsonMode && process.stdout.isTTY && !opts.plain;
const rich = isRich() && opts.color !== false ;
const localTime =
Boolean (opts.localTime) || (!!process.env.TZ && isValidTimeZone(process.env.TZ));
while (true ) {
let payload: LogsTailPayload;
// Show progress spinner only on first fetch, not during follow polling
const showProgress = first && !opts.follow;
try {
payload = await fetchLogs(opts, cursor, showProgress);
} catch (err) {
await emitGatewayError(
err,
opts,
jsonMode ? "json" : "text" ,
rich,
emitJsonLine,
errorLine,
);
process.exit(1 );
return ;
}
const lines = Array.isArray(payload.lines) ? payload.lines : [];
if (jsonMode) {
if (first) {
if (
!emitJsonLine({
type: "meta" ,
file: payload.file,
cursor: payload.cursor,
size: payload.size,
})
) {
return ;
}
}
for (const line of lines) {
const parsed = parseLogLine(line);
if (parsed) {
if (!emitJsonLine({ type: "log" , ...parsed })) {
return ;
}
} else {
if (!emitJsonLine({ type: "raw" , raw: line })) {
return ;
}
}
}
if (payload.truncated) {
if (
!emitJsonLine({
type: "notice" ,
message: "Log tail truncated (increase --max-bytes)." ,
})
) {
return ;
}
}
if (payload.reset) {
if (
!emitJsonLine({
type: "notice" ,
message: "Log cursor reset (file rotated)." ,
})
) {
return ;
}
}
} else {
if (first && payload.file && payload.localFallback === true ) {
if (!errorLine(colorize(rich, theme.warn, LOCAL_FALLBACK_NOTICE))) {
return ;
}
}
if (first && payload.file) {
const prefix = pretty ? colorize(rich, theme.muted, "Log file:" ) : "Log file:" ;
if (!logLine(`${prefix} ${payload.file}`)) {
return ;
}
}
for (const line of lines) {
if (
!logLine(
formatLogLine(line, {
pretty,
rich,
localTime,
}),
)
) {
return ;
}
}
if (payload.truncated) {
if (!errorLine("Log tail truncated (increase --max-bytes)." )) {
return ;
}
}
if (payload.reset) {
if (!errorLine("Log cursor reset (file rotated)." )) {
return ;
}
}
}
cursor =
typeof payload.cursor === "number" && Number.isFinite(payload.cursor)
? payload.cursor
: cursor;
first = false ;
if (!opts.follow) {
return ;
}
await delay(interval);
}
});
}
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