52 lines
1.4 KiB
JavaScript
52 lines
1.4 KiB
JavaScript
(
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function(global) {
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// Current interface is these three methods.
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const requiredMethods = [
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'init',
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'serviceRecentSummarySeries',
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'serviceRecentSummaryStats',
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'upstreamRecentSummaryStats',
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'downstreamRecentSummaryStats',
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];
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// This is a bit gross but we want to support simple extensibility by
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// including JS in the browser without forcing operators to setup a whole
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// transpiling stack. So for now we use a window global as a thin registry for
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// these providers.
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class Consul {
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constructor() {
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this.registry = {};
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this.providers = {};
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}
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registerMetricsProvider(name, provider) {
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// Basic check that it matches the type we expect
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for (var m of requiredMethods) {
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if (typeof provider[m] !== 'function') {
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throw new Error(`Can't register metrics provider '${name}': missing ${m} method.`);
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}
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}
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this.registry[name] = provider;
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}
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getMetricsProvider(name, options) {
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if (!(name in this.registry)) {
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throw new Error(`Metrics Provider '${name}' is not registered.`);
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}
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if (name in this.providers) {
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return this.providers[name];
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}
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this.providers[name] = Object.create(this.registry[name]);
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this.providers[name].init(options);
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return this.providers[name];
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}
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}
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global.consul = new Consul();
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}
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)(window);
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