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* Copyright 2019 gRPC authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
import { LogVerbosity } from './constants';
import { pid } from 'process';
const clientVersion = require('../../package.json').version;
const DEFAULT_LOGGER: Partial<Console> = {
error: (message?: any, ...optionalParams: any[]) => {
console.error('E ' + message, ...optionalParams);
},
info: (message?: any, ...optionalParams: any[]) => {
console.error('I ' + message, ...optionalParams);
},
debug: (message?: any, ...optionalParams: any[]) => {
console.error('D ' + message, ...optionalParams);
},
};
let _logger: Partial<Console> = DEFAULT_LOGGER;
let _logVerbosity: LogVerbosity = LogVerbosity.ERROR;
const verbosityString =
process.env.GRPC_NODE_VERBOSITY ?? process.env.GRPC_VERBOSITY ?? '';
switch (verbosityString.toUpperCase()) {
case 'DEBUG':
_logVerbosity = LogVerbosity.DEBUG;
break;
case 'INFO':
_logVerbosity = LogVerbosity.INFO;
break;
case 'ERROR':
_logVerbosity = LogVerbosity.ERROR;
break;
case 'NONE':
_logVerbosity = LogVerbosity.NONE;
break;
default:
// Ignore any other values
}
export const getLogger = (): Partial<Console> => {
return _logger;
};
export const setLogger = (logger: Partial<Console>): void => {
_logger = logger;
};
export const setLoggerVerbosity = (verbosity: LogVerbosity): void => {
_logVerbosity = verbosity;
};
// eslint-disable-next-line @typescript-eslint/no-explicit-any
export const log = (severity: LogVerbosity, ...args: any[]): void => {
let logFunction: typeof DEFAULT_LOGGER.error;
if (severity >= _logVerbosity) {
switch (severity) {
case LogVerbosity.DEBUG:
logFunction = _logger.debug;
break;
case LogVerbosity.INFO:
logFunction = _logger.info;
break;
case LogVerbosity.ERROR:
logFunction = _logger.error;
break;
}
/* Fall back to _logger.error when other methods are not available for
* compatiblity with older behavior that always logged to _logger.error */
if (!logFunction) {
logFunction = _logger.error;
}
if (logFunction) {
logFunction.bind(_logger)(...args);
}
}
};
const tracersString =
process.env.GRPC_NODE_TRACE ?? process.env.GRPC_TRACE ?? '';
const enabledTracers = new Set<string>();
const disabledTracers = new Set<string>();
for (const tracerName of tracersString.split(',')) {
if (tracerName.startsWith('-')) {
disabledTracers.add(tracerName.substring(1));
} else {
enabledTracers.add(tracerName);
}
}
const allEnabled = enabledTracers.has('all');
export function trace(
severity: LogVerbosity,
tracer: string,
text: string
): void {
if (isTracerEnabled(tracer)) {
log(
severity,
new Date().toISOString() +
' | v' +
clientVersion +
' ' +
pid +
' | ' +
tracer +
' | ' +
text
);
}
}
export function isTracerEnabled(tracer: string): boolean {
return (
!disabledTracers.has(tracer) && (allEnabled || enabledTracers.has(tracer))
);
}
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