TextRenderer::render() - Code Metrics - krenor/prometheus-client - Measure and Improve Code Quality continuously with Scrutinizer

TextRenderer::render() A
last analyzed 2021-07-29 14:06 UTC

↳ Parent: TextRenderer

Complexity

Conditions	1
Paths	1

Size

Total Lines	5
Code Lines	3

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
cc	1
eloc	3
c	1
b	0
f	0
nc	1
nop	1
dl	0
loc	5
ccs	3
cts	3
cp	1
crap	1
rs	10

<?php

namespace Krenor\Prometheus\Renderer;

use Krenor\Prometheus\Sample;
use Tightenco\Collect\Support\Collection;
use Krenor\Prometheus\MetricFamilySamples;
use Krenor\Prometheus\Contracts\Renderable;

class TextRenderer implements Renderable
{
    public const CONTENT_TYPE = 'text/plain; version=0.0.4';

    /**
     * {@inheritdoc}
     */
    public function render(Collection $metrics): string
    {
        return $metrics
            ->flatMap(fn(MetricFamilySamples $family) => $this->transform($family))
            ->implode(PHP_EOL) . PHP_EOL;
    }

    /**
     * @param Collection $labels
     *
     * @return string
     */
    protected function serialize(Collection $labels): string
    {
        if ($labels->isEmpty()) {
            return '';
        }

        $quoted = $labels->map(fn(string $value) => "\"{$value}\"");

        $serialized = urldecode(
            http_build_query($quoted->toArray(), '', ',')
        );

        return "{{$serialized}}";
    }

    /**
     * @param MetricFamilySamples $family
     *
     * @return Collection
     */
    protected function transform(MetricFamilySamples $family): Collection
    {
        $metric = $family->metric();

        $lines = new Collection([
            "# HELP {$metric->key()} {$metric->description()}",
            "# TYPE {$metric->key()} {$metric->type()}",
        ]);

        $metrics = $family
            ->samples()
            ->map(fn(Sample $sample) => "{$sample->name()}{$this->serialize($sample->labels())} {$sample->value()}")
            ->values();

        return $lines->merge($metrics);
    }
}


1		<?php
2
3		namespace Krenor\Prometheus\Renderer;
4
5		use Krenor\Prometheus\Sample;
6		use Tightenco\Collect\Support\Collection;
7		use Krenor\Prometheus\MetricFamilySamples;
8		use Krenor\Prometheus\Contracts\Renderable;
9
10		class TextRenderer implements Renderable
11		{
12		public const CONTENT_TYPE = 'text/plain; version=0.0.4';
13
14		/**
15		* {@inheritdoc}
16		*/
17	34	public function render(Collection $metrics): string
18		{
19		return $metrics
20	34	->flatMap(fn(MetricFamilySamples $family) => $this->transform($family))
21	34	->implode(PHP_EOL) . PHP_EOL;
22		}
23
24		/**
25		* @param Collection $labels
26		*
27		* @return string
28		*/
29	32	protected function serialize(Collection $labels): string
30		{
31	32	if ($labels->isEmpty()) {
32	1	return '';
33		}
34
35	31	$quoted = $labels->map(fn(string $value) => "\"{$value}\"");
36
37	31	$serialized = urldecode(
38	31	http_build_query($quoted->toArray(), '', ',')
39		);
40
41	31	return "{{$serialized}}";
42		}
43
44		/**
45		* @param MetricFamilySamples $family
46		*
47		* @return Collection
48		*/
49	32	protected function transform(MetricFamilySamples $family): Collection
50		{
51	32	$metric = $family->metric();
52
53	32	$lines = new Collection([
54	32	"# HELP {$metric->key()} {$metric->description()}",
55	32	"# TYPE {$metric->key()} {$metric->type()}",
56		]);
57
58	32	$metrics = $family
59	32	->samples()
60	32	->map(fn(Sample $sample) => "{$sample->name()}{$this->serialize($sample->labels())} {$sample->value()}")
61	32	->values();
62
63	32	return $lines->merge($metrics);
64		}
65		}
66

krenor / prometheus-client

TextRenderer::render() A last analyzed 2021-07-29 14:06 UTC

Complexity

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TextRenderer::render() A
last analyzed 2021-07-29 14:06 UTC