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bdc97b3976
Just some clean up reorganization around flatbuffer/minimal dispatch code. This is prep for adding a JSON dispatcher.
49 lines
1.7 KiB
TypeScript
49 lines
1.7 KiB
TypeScript
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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import { assert } from "./util";
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import { sendSync, msg, flatbuffers } from "./dispatch_flatbuffers";
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export interface Metrics {
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opsDispatched: number;
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opsCompleted: number;
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bytesSentControl: number;
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bytesSentData: number;
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bytesReceived: number;
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}
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function req(): [flatbuffers.Builder, msg.Any, flatbuffers.Offset] {
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const builder = flatbuffers.createBuilder();
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const inner = msg.Metrics.createMetrics(builder);
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return [builder, msg.Any.Metrics, inner];
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}
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function res(baseRes: null | msg.Base): Metrics {
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assert(baseRes !== null);
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assert(msg.Any.MetricsRes === baseRes!.innerType());
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const res = new msg.MetricsRes();
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assert(baseRes!.inner(res) !== null);
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return {
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opsDispatched: res.opsDispatched().toFloat64(),
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opsCompleted: res.opsCompleted().toFloat64(),
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bytesSentControl: res.bytesSentControl().toFloat64(),
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bytesSentData: res.bytesSentData().toFloat64(),
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bytesReceived: res.bytesReceived().toFloat64()
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};
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}
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/** Receive metrics from the privileged side of Deno.
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*
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* > console.table(Deno.metrics())
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* ┌──────────────────┬────────┐
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* │ (index) │ Values │
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* ├──────────────────┼────────┤
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* │ opsDispatched │ 9 │
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* │ opsCompleted │ 9 │
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* │ bytesSentControl │ 504 │
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* │ bytesSentData │ 0 │
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* │ bytesReceived │ 856 │
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* └──────────────────┴────────┘
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*/
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export function metrics(): Metrics {
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return res(sendSync(...req()));
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}
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