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zeekay
7cf87b230b
The module already called itself github.com/luxfi/node while containing no node in Go: cmd/luxd was twenty-one lines that printed the size of a few types, and the Go column of the matrix measured a VM plugin. A repo that fetches the thing it claims to be has not replaced it, so the Go sources move in — 1515 files, the daemon and everything under it — and the build reaches outside this module for nothing. Rust and C++ sit beside it unchanged and are still measured against it by the differential. That is the point of one repo: the reference implementation and the two ports are the same checkout, so parity is a thing you can run rather than a thing you assert. Verified: builds, and the closure carries no lux-private — checked at build time rather than believed. The daemon starts twelve chains on a local network (P X C Q Z A B G K M F, plus D through its plugin) and reports healthy.
75 lines
1.7 KiB
Go
75 lines
1.7 KiB
Go
// Copyright (C) 2019-2025, Lux Industries Inc. All rights reserved.
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// See the file LICENSE for licensing terms.
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package metrics
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"net/http"
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"net/url"
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"github.com/luxfi/metric"
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)
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// cleanlyCloseBody drains and closes an HTTP response body to prevent
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// HTTP/2 GOAWAY errors caused by closing bodies with unread data.
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func cleanlyCloseBody(body io.ReadCloser) error {
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if body == nil {
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return nil
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}
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_, _ = io.Copy(io.Discard, body)
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return body.Close()
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}
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// Client for requesting metrics from a remote Lux Node instance
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type Client struct {
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uri string
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}
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// NewClient returns a new Metrics API Client
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func NewClient(uri string) *Client {
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return &Client{
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uri: uri + "/v1/metrics",
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}
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}
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// GetMetrics returns the metrics from the connected node. The metrics are
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// returned as a map of metric family name to the metric family.
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func (c *Client) GetMetrics(ctx context.Context) (map[string]*metric.MetricFamily, error) {
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uri, err := url.Parse(c.uri)
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if err != nil {
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return nil, err
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}
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request, err := http.NewRequestWithContext(
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ctx,
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http.MethodGet,
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uri.String(),
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bytes.NewReader(nil),
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)
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if err != nil {
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return nil, fmt.Errorf("failed to create request: %w", err)
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}
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resp, err := http.DefaultClient.Do(request)
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if err != nil {
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return nil, fmt.Errorf("failed to issue request: %w", err)
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}
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defer cleanlyCloseBody(resp.Body)
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// Return an error for any non successful status code
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if resp.StatusCode < 200 || resp.StatusCode > 299 {
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return nil, fmt.Errorf("received status code: %d", resp.StatusCode)
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}
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var parser metric.TextParser
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metrics, err := parser.TextToMetricFamilies(resp.Body)
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if err != nil {
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return nil, err
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}
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return metrics, nil
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}
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