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denoland-deno/js/metrics.ts
Ryan Dahl c9614d86c1
Move //libdeno to //core/libdeno (#2015)
Fixes some sed errors introduced in c43cfe.

Unfortunately moving libdeno required splitting build.rs into two parts,
one for cli and one for core.

I've also removed the arm64 build - it's complicating things at this
re-org and we're not even testing it. I need to swing back to it and get
tools/test.py running for it.
2019-03-30 14:45:36 -04:00

52 lines
1.8 KiB
TypeScript

// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import * as msg from "gen/cli/msg_generated";
import * as flatbuffers from "./flatbuffers";
import { assert } from "./util";
import * as dispatch from "./dispatch";
export interface Metrics {
opsDispatched: number;
opsCompleted: number;
bytesSentControl: number;
bytesSentData: number;
bytesReceived: number;
}
function req(): [flatbuffers.Builder, msg.Any, flatbuffers.Offset] {
const builder = flatbuffers.createBuilder();
msg.Metrics.startMetrics(builder);
const inner = msg.Metrics.endMetrics(builder);
return [builder, msg.Any.Metrics, inner];
}
function res(baseRes: null | msg.Base): Metrics {
assert(baseRes !== null);
assert(msg.Any.MetricsRes === baseRes!.innerType());
const res = new msg.MetricsRes();
assert(baseRes!.inner(res) !== null);
return {
opsDispatched: res.opsDispatched().toFloat64(),
opsCompleted: res.opsCompleted().toFloat64(),
bytesSentControl: res.bytesSentControl().toFloat64(),
bytesSentData: res.bytesSentData().toFloat64(),
bytesReceived: res.bytesReceived().toFloat64()
};
}
/** Receive metrics from the privileged side of Deno.
*
* > console.table(Deno.metrics())
* ┌──────────────────┬────────┐
* │ (index) │ Values │
* ├──────────────────┼────────┤
* │ opsDispatched │ 9 │
* │ opsCompleted │ 9 │
* │ bytesSentControl │ 504 │
* │ bytesSentData │ 0 │
* │ bytesReceived │ 856 │
* └──────────────────┴────────┘
*/
export function metrics(): Metrics {
return res(dispatch.sendSync(...req()));
}