@riddance/host
Version:
197 lines • 25.9 kB
JavaScript
import { performance } from 'node:perf_hooks';
export function makeLogger(transport, minimumLogLevel, signal) {
return new EnrichingLogger(new LogBuffer(transport, signal), minimumLogLevel
? ['fatal', 'error', 'warning', 'info', 'debug', 'trace'].indexOf(minimumLogLevel)
: 5, signal);
}
const performanceTimeOrigin100ns = Math.round(performance.timeOrigin * 10_000);
export function highPrecisionISODate(performanceNow) {
const now100ns = performanceTimeOrigin100ns + Math.round(performanceNow * 10_000);
return (new Date(now100ns / 10_000).toISOString().slice(0, 20) +
(now100ns % 10_000_000).toString().padStart(7, '0') +
'Z');
}
class LogBuffer {
#transport;
#entries = [];
#size = 0;
#flusher;
#signal;
#asyncTransport;
#timeout;
constructor(transport, signal) {
this.#transport = transport;
this.#signal = signal;
}
collect(level, numericLogLevel, message, error, fields, reservedEnrichment, customEnrichment) {
const offset = performance.now();
const json = JSON.stringify({
timestamp: highPrecisionISODate(offset),
level,
message,
error: errorAsJson(error),
...reservedEnrichment,
...extra(fields, customEnrichment),
});
this.#entries.push({
timestamp: offset,
level,
message,
error,
json,
});
this.#size += json.length;
if (this.#asyncTransport === false) {
// eslint-disable-next-line no-void
void this.#transport.sendEntries(this.#entries, this.#signal);
this.#entries = [];
this.#size = 0;
}
else if (this.#asyncTransport === undefined) {
this.#asyncTransport = true;
setImmediate(() => {
if (this.#flusher) {
return;
}
const sendResult = this.#transport.sendEntries(this.#entries, this.#signal);
this.#entries = [];
this.#size = 0;
if (sendResult) {
this.#flusher = sendResult;
}
else {
this.#asyncTransport = false;
}
});
}
else {
if (numericLogLevel < 2 || this.#entries.length > 8 || this.#size > 64_000) {
// eslint-disable-next-line no-void
void this.flush();
}
else {
this.#timeout = setTimeout(() => {
// eslint-disable-next-line no-void
void this.flush();
this.#timeout = undefined;
}, 2000);
}
}
}
async flush() {
if (this.#entries.length === 0) {
return;
}
this.#startFlush(this.#entries);
this.#entries = [];
this.#size = 0;
if (this.#timeout) {
clearTimeout(this.#timeout);
this.#timeout = undefined;
}
return await this.#flusher;
}
#startFlush(entries) {
if (this.#flusher) {
this.#flusher = this.#flusher.then(() => this.#transport.sendEntries(entries, this.#signal));
}
else {
this.#flusher = this.#transport.sendEntries(entries, this.#signal);
}
}
}
function extra(fields, customEnrichment) {
if (!fields) {
if (!customEnrichment) {
return undefined;
}
return customEnrichment;
}
if (!customEnrichment) {
return fields;
}
return { ...customEnrichment, ...fields };
}
class EnrichingLogger {
#buffer;
#reservedEnrichment;
#customEnrichment;
#level;
constructor(buffer, level, reservedEnrichment, customEnrichment) {
this.#buffer = buffer;
this.#level = level;
this.#reservedEnrichment = reservedEnrichment;
this.#customEnrichment = customEnrichment;
}
enrich(fields) {
return new EnrichingLogger(this.#buffer, this.#level, this.#reservedEnrichment, {
...this.#customEnrichment,
...fields,
});
}
flush() {
return this.#buffer.flush();
}
enrichReserved(fields) {
return new EnrichingLogger(this.#buffer, this.#level, {
...this.#reservedEnrichment,
...fields,
}, this.#customEnrichment);
}
trace(message, error, fields) {
if (this.#level < 5) {
return;
}
this.#buffer.collect('trace', 5, message, error, fields, this.#reservedEnrichment, this.#customEnrichment);
}
debug(message, error, fields) {
if (this.#level < 4) {
return;
}
this.#buffer.collect('debug', 4, message, error, fields, this.#reservedEnrichment, this.#customEnrichment);
}
info(message, error, fields) {
if (this.#level < 3) {
return;
}
this.#buffer.collect('info', 3, message, error, fields, this.#reservedEnrichment, this.#customEnrichment);
}
warn(message, error, fields) {
if (this.#level < 2) {
return;
}
this.#buffer.collect('warning', 2, message, error, fields, this.#reservedEnrichment, this.#customEnrichment);
}
error(message, error, fields) {
if (this.#level < 1) {
return;
}
this.#buffer.collect('error', 1, message, error, fields, this.#reservedEnrichment, this.#customEnrichment);
}
fatal(message, error, fields) {
this.#buffer.collect('fatal', 0, message, error, fields, this.#reservedEnrichment, this.#customEnrichment);
}
}
function errorAsJson(error) {
if (error === undefined || error === null) {
return undefined;
}
if (error instanceof Error) {
return {
message: error.message,
name: error.name,
stack: error.stack,
...error,
};
}
if (error instanceof Object) {
return {
...error,
};
}
return {
message: error?.toString(),
name: typeof error,
};
}
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{ performance } from 'node:perf_hooks'\nimport { Json, Logger } from '../context.js'\nimport { LogEntry, LogLevel, LogTransport, RootLogger } from './context.js'\n\nexport function makeLogger(\n    transport: LogTransport,\n    minimumLogLevel: LogLevel | undefined,\n    signal: AbortSignal,\n): RootLogger {\n    return new EnrichingLogger(\n        new LogBuffer(transport, signal),\n        minimumLogLevel\n            ? ['fatal', 'error', 'warning', 'info', 'debug', 'trace'].indexOf(minimumLogLevel)\n            : 5,\n        signal,\n    )\n}\n\nconst performanceTimeOrigin100ns = Math.round(performance.timeOrigin * 10_000)\n\nexport function highPrecisionISODate(performanceNow: number) {\n    const now100ns = performanceTimeOrigin100ns + Math.round(performanceNow * 10_000)\n    return (\n        new Date(now100ns / 10_000).toISOString().slice(0, 20) +\n        (now100ns % 10_000_000).toString().padStart(7, '0') +\n        'Z'\n    )\n}\n\nclass LogBuffer {\n    readonly #transport: LogTransport\n    #entries: LogEntry[] = []\n    #size = 0\n    #flusher?: Promise<void> | undefined\n    readonly #signal: AbortSignal\n    #asyncTransport: boolean | undefined\n    #timeout: NodeJS.Timeout | undefined\n\n    constructor(transport: LogTransport, signal: AbortSignal) {\n        this.#transport = transport\n        this.#signal = signal\n    }\n\n    collect(\n        level: LogLevel,\n        numericLogLevel: number,\n        message: string,\n        error: unknown,\n        fields: object | undefined,\n        reservedEnrichment: object | undefined,\n        customEnrichment: object | undefined,\n    ) {\n        const offset = performance.now()\n        const json = JSON.stringify({\n            timestamp: highPrecisionISODate(offset),\n            level,\n            message,\n            error: errorAsJson(error),\n            ...reservedEnrichment,\n            ...extra(fields, customEnrichment),\n        })\n        this.#entries.push({\n            timestamp: offset,\n            level,\n            message,\n            error,\n            json,\n        })\n        this.#size += json.length\n\n        if (this.#asyncTransport === false) {\n            // eslint-disable-next-line no-void\n            void this.#transport.sendEntries(this.#entries, this.#signal)\n            this.#entries = []\n            this.#size = 0\n        } else if (this.#asyncTransport === undefined) {\n            this.#asyncTransport = true\n            setImmediate(() => {\n                if (this.#flusher) {\n                    return\n                }\n                const sendResult = this.#transport.sendEntries(this.#entries, this.#signal)\n                this.#entries = []\n                this.#size = 0\n                if (sendResult) {\n                    this.#flusher = sendResult\n                } else {\n                    this.#asyncTransport = false\n                }\n            })\n        } else {\n            if (numericLogLevel < 2 || this.#entries.length > 8 || this.#size > 64_000) {\n                // eslint-disable-next-line no-void\n                void this.flush()\n            } else {\n                this.#timeout = setTimeout(() => {\n                    // eslint-disable-next-line no-void\n                    void this.flush()\n                    this.#timeout = undefined\n                }, 2000)\n            }\n        }\n    }\n\n    async flush(): Promise<void> {\n        if (this.#entries.length === 0) {\n            return\n        }\n        this.#startFlush(this.#entries)\n        this.#entries = []\n        this.#size = 0\n        if (this.#timeout) {\n            clearTimeout(this.#timeout)\n            this.#timeout = undefined\n        }\n        return await this.#flusher\n    }\n\n    #startFlush(entries: LogEntry[]) {\n        if (this.#flusher) {\n            this.#flusher = this.#flusher.then(() =>\n                this.#transport.sendEntries(entries, this.#signal),\n            )\n        } else {\n            this.#flusher = this.#transport.sendEntries(entries, this.#signal)\n        }\n    }\n}\n\nfunction extra(fields: object | undefined, customEnrichment: object | undefined) {\n    if (!fields) {\n        if (!customEnrichment) {\n            return undefined\n        }\n        return customEnrichment\n    }\n    if (!customEnrichment) {\n        return fields\n    }\n    return { ...customEnrichment, ...fields }\n}\n\nclass EnrichingLogger implements Logger {\n    readonly #buffer: LogBuffer\n    readonly #reservedEnrichment?: object\n    readonly #customEnrichment?: object\n    readonly #level: number\n\n    constructor(\n        buffer: LogBuffer,\n        level: number,\n        reservedEnrichment?: object,\n        customEnrichment?: object,\n    ) {\n        this.#buffer = buffer\n        this.#level = level\n        this.#reservedEnrichment = reservedEnrichment\n        this.#customEnrichment = customEnrichment\n    }\n\n    enrich(fields: object): Logger {\n        return new EnrichingLogger(this.#buffer, this.#level, this.#reservedEnrichment, {\n            ...this.#customEnrichment,\n            ...fields,\n        })\n    }\n\n    flush() {\n        return this.#buffer.flush()\n    }\n\n    enrichReserved(fields: object): EnrichingLogger {\n        return new EnrichingLogger(\n            this.#buffer,\n            this.#level,\n            {\n                ...this.#reservedEnrichment,\n                ...fields,\n            },\n            this.#customEnrichment,\n        )\n    }\n\n    trace(message: string, error: unknown, fields: object | undefined): void {\n        if (this.#level < 5) {\n            return\n        }\n        this.#buffer.collect(\n            'trace',\n            5,\n            message,\n            error,\n            fields,\n            this.#reservedEnrichment,\n            this.#customEnrichment,\n        )\n    }\n    debug(message: string, error: unknown, fields: object | undefined): void {\n        if (this.#level < 4) {\n            return\n        }\n        this.#buffer.collect(\n            'debug',\n            4,\n            message,\n            error,\n            fields,\n            this.#reservedEnrichment,\n            this.#customEnrichment,\n        )\n    }\n    info(message: string, error: unknown, fields: object | undefined): void {\n        if (this.#level < 3) {\n            return\n        }\n        this.#buffer.collect(\n            'info',\n            3,\n            message,\n            error,\n            fields,\n            this.#reservedEnrichment,\n            this.#customEnrichment,\n        )\n    }\n    warn(message: string, error: unknown, fields: object | undefined): void {\n        if (this.#level < 2) {\n            return\n        }\n        this.#buffer.collect(\n            'warning',\n            2,\n            message,\n            error,\n            fields,\n            this.#reservedEnrichment,\n            this.#customEnrichment,\n        )\n    }\n    error(message: string, error: unknown, fields: object | undefined): void {\n        if (this.#level < 1) {\n            return\n        }\n        this.#buffer.collect(\n            'error',\n            1,\n            message,\n            error,\n            fields,\n            this.#reservedEnrichment,\n            this.#customEnrichment,\n        )\n    }\n    fatal(message: string, error: unknown, fields: object | undefined): void {\n        this.#buffer.collect(\n            'fatal',\n            0,\n            message,\n            error,\n            fields,\n            this.#reservedEnrichment,\n            this.#customEnrichment,\n        )\n    }\n}\n\nfunction errorAsJson(error: unknown): Json | undefined {\n    if (error === undefined || error === null) {\n        return undefined\n    }\n    if (error instanceof Error) {\n        return {\n            message: error.message,\n            name: error.name,\n            stack: error.stack,\n            ...(error as unknown as { [key: string]: unknown }),\n        } as Json\n    }\n    if (error instanceof Object) {\n        return {\n            ...error,\n        } as Json\n    }\n    return {\n        message: (error as object | undefined)?.toString(),\n        name: typeof error,\n    } as Json\n}\n"]}