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fb4d8fe | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 | import fs from "node:fs/promises";
import path from "node:path";
import type { GatewayRequestHandlers } from "./types.js";
import { getResolvedLoggerSettings } from "../../logging.js";
import {
ErrorCodes,
errorShape,
formatValidationErrors,
validateLogsTailParams,
} from "../protocol/index.js";
const DEFAULT_LIMIT = 500;
const DEFAULT_MAX_BYTES = 250_000;
const MAX_LIMIT = 5000;
const MAX_BYTES = 1_000_000;
const ROLLING_LOG_RE = /^openclaw-\d{4}-\d{2}-\d{2}\.log$/;
function clamp(value: number, min: number, max: number) {
return Math.max(min, Math.min(max, value));
}
function isRollingLogFile(file: string): boolean {
return ROLLING_LOG_RE.test(path.basename(file));
}
async function resolveLogFile(file: string): Promise<string> {
const stat = await fs.stat(file).catch(() => null);
if (stat) {
return file;
}
if (!isRollingLogFile(file)) {
return file;
}
const dir = path.dirname(file);
const entries = await fs.readdir(dir, { withFileTypes: true }).catch(() => null);
if (!entries) {
return file;
}
const candidates = await Promise.all(
entries
.filter((entry) => entry.isFile() && ROLLING_LOG_RE.test(entry.name))
.map(async (entry) => {
const fullPath = path.join(dir, entry.name);
const fileStat = await fs.stat(fullPath).catch(() => null);
return fileStat ? { path: fullPath, mtimeMs: fileStat.mtimeMs } : null;
}),
);
const sorted = candidates
.filter((entry): entry is NonNullable<typeof entry> => Boolean(entry))
.toSorted((a, b) => b.mtimeMs - a.mtimeMs);
return sorted[0]?.path ?? file;
}
async function readLogSlice(params: {
file: string;
cursor?: number;
limit: number;
maxBytes: number;
}) {
const stat = await fs.stat(params.file).catch(() => null);
if (!stat) {
return {
cursor: 0,
size: 0,
lines: [] as string[],
truncated: false,
reset: false,
};
}
const size = stat.size;
const maxBytes = clamp(params.maxBytes, 1, MAX_BYTES);
const limit = clamp(params.limit, 1, MAX_LIMIT);
let cursor =
typeof params.cursor === "number" && Number.isFinite(params.cursor)
? Math.max(0, Math.floor(params.cursor))
: undefined;
let reset = false;
let truncated = false;
let start = 0;
if (cursor != null) {
if (cursor > size) {
reset = true;
start = Math.max(0, size - maxBytes);
truncated = start > 0;
} else {
start = cursor;
if (size - start > maxBytes) {
reset = true;
truncated = true;
start = Math.max(0, size - maxBytes);
}
}
} else {
start = Math.max(0, size - maxBytes);
truncated = start > 0;
}
if (size === 0 || size <= start) {
return {
cursor: size,
size,
lines: [] as string[],
truncated,
reset,
};
}
const handle = await fs.open(params.file, "r");
try {
let prefix = "";
if (start > 0) {
const prefixBuf = Buffer.alloc(1);
const prefixRead = await handle.read(prefixBuf, 0, 1, start - 1);
prefix = prefixBuf.toString("utf8", 0, prefixRead.bytesRead);
}
const length = Math.max(0, size - start);
const buffer = Buffer.alloc(length);
const readResult = await handle.read(buffer, 0, length, start);
const text = buffer.toString("utf8", 0, readResult.bytesRead);
let lines = text.split("\n");
if (start > 0 && prefix !== "\n") {
lines = lines.slice(1);
}
if (lines.length > 0 && lines[lines.length - 1] === "") {
lines = lines.slice(0, -1);
}
if (lines.length > limit) {
lines = lines.slice(lines.length - limit);
}
cursor = size;
return {
cursor,
size,
lines,
truncated,
reset,
};
} finally {
await handle.close();
}
}
export const logsHandlers: GatewayRequestHandlers = {
"logs.tail": async ({ params, respond }) => {
if (!validateLogsTailParams(params)) {
respond(
false,
undefined,
errorShape(
ErrorCodes.INVALID_REQUEST,
`invalid logs.tail params: ${formatValidationErrors(validateLogsTailParams.errors)}`,
),
);
return;
}
const p = params as { cursor?: number; limit?: number; maxBytes?: number };
const configuredFile = getResolvedLoggerSettings().file;
try {
const file = await resolveLogFile(configuredFile);
const result = await readLogSlice({
file,
cursor: p.cursor,
limit: p.limit ?? DEFAULT_LIMIT,
maxBytes: p.maxBytes ?? DEFAULT_MAX_BYTES,
});
respond(true, { file, ...result }, undefined);
} catch (err) {
respond(
false,
undefined,
errorShape(ErrorCodes.UNAVAILABLE, `log read failed: ${String(err)}`),
);
}
},
};
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