graphql-language-service-server/esm/Logger.js

Server process backing the GraphQL Language Service

import * as fs from 'fs';
import * as os from 'os';
import { join } from 'path';
import { DIAGNOSTIC_SEVERITY, SEVERITY, } from 'graphql-language-service';
export class Logger {
    constructor(tmpDir, stderrOnly) {
        const dir = join(tmpDir || os.tmpdir(), 'graphql-language-service-logs');
        try {
            if (!fs.existsSync(dir)) {
                fs.mkdirSync(dir);
            }
        }
        catch (_) {
        }
        this._logFilePath = join(dir, `graphql-language-service-log-${os.userInfo().username}-${getDateString()}.log`);
        this._stderrOnly = stderrOnly || false;
    }
    error(message) {
        this._log(message, SEVERITY.Error);
    }
    warn(message) {
        this._log(message, SEVERITY.Warning);
    }
    info(message) {
        this._log(message, SEVERITY.Information);
    }
    log(message) {
        this._log(message, SEVERITY.Hint);
    }
    _log(message, severityKey) {
        const timestamp = new Date().toLocaleString(undefined);
        const severity = DIAGNOSTIC_SEVERITY[severityKey];
        const pid = process.pid;
        const stringMessage = String(message).trim();
        const logMessage = `${timestamp} [${severity}] (pid: ${pid}) graphql-language-service-usage-logs: ${stringMessage}\n`;
        fs.appendFile(this._logFilePath, logMessage, _error => { });
        this._getOutputStream(severity).write(logMessage, err => {
            err && console.error(err);
        });
    }
    _getOutputStream(severity) {
        if (this._stderrOnly || severity === DIAGNOSTIC_SEVERITY.Error) {
            return process.stderr;
        }
        return process.stdout;
    }
}
function getDateString() {
    const date = new Date();
    return `${date.getFullYear()}-${date.getMonth() + 1}-${date.getDate()}`;
}
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