@opentelemetry/sdk-metrics
Version:
60 lines • 1.61 kB
JavaScript
;
/*
* Copyright The OpenTelemetry Authors
* SPDX-License-Identifier: Apache-2.0
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.ExactPredicate = exports.PatternPredicate = void 0;
// https://tc39.es/proposal-regex-escaping
// escape ^ $ \ . + ? ( ) [ ] { } |
// do not need to escape * as we interpret it as wildcard
const ESCAPE = /[\^$\\.+?()[\]{}|]/g;
/**
* Wildcard pattern predicate, supports patterns like `*`, `foo*`, `*bar`.
*/
class PatternPredicate {
_matchAll;
_regexp;
constructor(pattern) {
if (pattern === '*') {
this._matchAll = true;
this._regexp = /.*/;
}
else {
this._matchAll = false;
this._regexp = new RegExp(PatternPredicate.escapePattern(pattern));
}
}
match(str) {
if (this._matchAll) {
return true;
}
return this._regexp.test(str);
}
static escapePattern(pattern) {
return `^${pattern.replace(ESCAPE, '\\$&').replace('*', '.*')}$`;
}
static hasWildcard(pattern) {
return pattern.includes('*');
}
}
exports.PatternPredicate = PatternPredicate;
class ExactPredicate {
_matchAll;
_pattern;
constructor(pattern) {
this._matchAll = pattern === undefined;
this._pattern = pattern;
}
match(str) {
if (this._matchAll) {
return true;
}
if (str === this._pattern) {
return true;
}
return false;
}
}
exports.ExactPredicate = ExactPredicate;
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