TextRenderer::transform() - Code Metrics - Inspection of "Teach the TextRenderer to handle empty labels" - krenor/prometheus-client - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Stan

created 2018-06-01 15:07 UTC

TextRenderer::transform() A

↳ Parent: TextRenderer

Complexity

Conditions	1
Paths	1

Size

Total Lines	14
Code Lines	8

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	1

Importance

Changes

Metric	Value
cc	1
eloc	8
nc	1
nop	1
dl	0
loc	14
ccs	8
cts	8
cp	1
crap	1
rs	9.4285
c	0
b	0
f	0

<?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
{
    /**
     * {@inheritdoc}
     */
    public function render(Collection $metrics): string
    {
        $text = $metrics->flatMap(function (MetricFamilySamples $family) {
            return $this->transform($family);
        })->implode("\n");

        return "{$text}\n";
    }

    /**
     * @param Collection $labels
     *
     * @return string
     */
    protected function serialize(Collection $labels): string
    {
        $quoted = $labels->map(function (string $value) {
            return "\"{$value}\"";
        });

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

        return !$serialized
            ? $serialized
            : "{{$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(function (Sample $sample) {
            return "{$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		/**
13		* {@inheritdoc}
14		*/
15	31	public function render(Collection $metrics): string
16		{
17		$text = $metrics->flatMap(function (MetricFamilySamples $family) {
18	31	return $this->transform($family);
19	31	})->implode("\n");
20
21	31	return "{$text}\n";
22		}
23
24		/**
25		* @param Collection $labels
26		*
27		* @return string
28		*/
29	31	protected function serialize(Collection $labels): string
30		{
31		$quoted = $labels->map(function (string $value) {
32	31	return "\"{$value}\"";
33	31	});
34
35	31	$serialized = urldecode(
36	31	http_build_query($quoted->toArray(), '', ',')
37		);
38
39	31	return !$serialized
40		? $serialized
41	31	: "{{$serialized}}";
42		}
43
44		/**
45		* @param MetricFamilySamples $family
46		*
47		* @return Collection
48		*/
49	31	protected function transform(MetricFamilySamples $family): Collection
50		{
51	31	$metric = $family->metric();
52
53	31	$lines = new Collection([
54	31	"# HELP {$metric->key()} {$metric->description()}",
55	31	"# TYPE {$metric->key()} {$metric->type()}",
56		]);
57
58		$metrics = $family->samples()->map(function (Sample $sample) {
59	31	return "{$sample->name()}{$this->serialize($sample->labels())} {$sample->value()}";
60	31	})->values();
61
62	31	return $lines->merge($metrics);
63		}
64		}
65

krenor / prometheus-client

Push — develop ( 28a887...d46380 )

TextRenderer::transform() A

Complexity

Size

Duplication

Code Coverage

Importance

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