openmetrics-php / exposition-text
OpenMetrics 文本展示格式的实现
v0.4.1
2024-07-16 12:47 UTC
Requires
- php: ^7.2 || ^8.0
Requires (Dev)
- ext-xdebug: *
This package is auto-updated.
Last update: 2024-09-05 09:44:23 UTC
README
OpenMetrics-PHP 展示文本
描述
OpenMetrics OpenMetrics 文本展示格式的实现。
此实现支持以下指标类型
- 计数器
- 量表
- 直方图(从一组量表计算得出)
- 摘要(从一组量表计算得出)
请注意: 默认情况下,HTTP 响应使用以下内容类型头 Content-Type: application/openmetrics-text; charset=utf-8
,如此处讨论。
支持的 PHP 版本
- 7.2
- 7.3
- 7.4
- 8.0
- 8.1
- 8.2
- 8.3
安装
composer require openmetrics-php/exposition-text
使用
创建一个计数器集合并响应它
<?php declare(strict_types=1); namespace YourVendor\YourProject; use OpenMetricsPhp\Exposition\Text\Collections\CounterCollection; use OpenMetricsPhp\Exposition\Text\Collections\LabelCollection; use OpenMetricsPhp\Exposition\Text\Types\MetricName; use OpenMetricsPhp\Exposition\Text\Types\Label; use OpenMetricsPhp\Exposition\Text\Metrics\Counter; use OpenMetricsPhp\Exposition\Text\HttpResponse; $counters = CounterCollection::fromCounters( MetricName::fromString('your_metric_name'), Counter::fromValue(1), Counter::fromValueAndTimestamp(2, time()), Counter::fromValue(3)->withLabels( Label::fromNameAndValue('label1', 'label_value') ), Counter::fromValueAndTimestamp(4, time())->withLabels( Label::fromNameAndValue('label2', 'label_value') ) )->withHelp('A helpful description of your measurement.'); # Add counters after creating the collection $counters->add( Counter::fromValue(5), Counter::fromValueAndTimestamp(6, time()), Counter::fromValue(7)->withLabels( # Create labels from label string Label::fromLabelString('label3="label_value"') ) ); # Prepare labels upfront $labels = LabelCollection::fromAssocArray( [ 'label4' => 'label_value', 'label5' => 'label_value', ] ); $counters->add( Counter::fromValueAndTimestamp(8, time())->withLabelCollection($labels) ); echo $counters->getMetricsString();
打印
# TYPE your_metric_name counter
# HELP your_metric_name A helpful description of your measurement.
your_metric_name_total 1.000000
your_metric_name_total 2.000000 1541323663
your_metric_name_total{label1="label_value"} 3.000000
your_metric_name_total{label2="label_value"} 4.000000 1541323663
your_metric_name_total 5.000000
your_metric_name_total 6.000000 1541323663
your_metric_name_total{label3="label_value"} 7.000000
your_metric_name_total{label4="label_value",label5="label_value"} 8.000000 1541323663
创建一个量表集合并响应它
请参阅 examples/gauges.php。
<?php declare(strict_types=1); namespace YourVendor\YourProject; use OpenMetricsPhp\Exposition\Text\Collections\GaugeCollection; use OpenMetricsPhp\Exposition\Text\Collections\LabelCollection; use OpenMetricsPhp\Exposition\Text\Types\MetricName; use OpenMetricsPhp\Exposition\Text\Types\Label; use OpenMetricsPhp\Exposition\Text\Metrics\Gauge; use OpenMetricsPhp\Exposition\Text\HttpResponse; $gauges = GaugeCollection::fromGauges( MetricName::fromString('your_metric_name'), Gauge::fromValue(12.3), Gauge::fromValueAndTimestamp(-45.6, time()), Gauge::fromValue(78.9)->withLabels( Label::fromNameAndValue('label1', 'label_value') ), Gauge::fromValueAndTimestamp(0.12, time())->withLabels( Label::fromNameAndValue('label2', 'label_value') ) )->withHelp('A helpful description of your measurement.'); $gauges->add( Gauge::fromValue(3.45), Gauge::fromValueAndTimestamp(67.8, time()), Gauge::fromValue(90.1)->withLabels( Label::fromLabelString('label3="label_value"') ) ); $labels = LabelCollection::fromAssocArray( [ 'label4' => 'label_value', 'label5' => 'label_value' ] ); $gauges->add( Gauge::fromValueAndTimestamp(23.4, time())->withLabelCollection($labels) ); echo $gauges->getMetricsString();
打印
# TYPE your_metric_name gauge
# HELP your_metric_name A helpful description of your measurement.
your_metric_name 12.300000
your_metric_name -45.600000 1541323799
your_metric_name{label1="label_value"} 78.900000
your_metric_name{label2="label_value"} 0.120000 1541323799
your_metric_name 3.450000
your_metric_name 67.800000 1541323799
your_metric_name{label3="label_value"} 90.100000
your_metric_name{label4="label_value",label5="label_value"} 23.400000 1541323799
从量表集合创建直方图并响应它
<?php declare(strict_types=1); namespace YourVendor\YourProject; use OpenMetricsPhp\Exposition\Text\Collections\GaugeCollection; use OpenMetricsPhp\Exposition\Text\HttpResponse; use OpenMetricsPhp\Exposition\Text\Metrics\Gauge; use OpenMetricsPhp\Exposition\Text\Metrics\Histogram; use OpenMetricsPhp\Exposition\Text\Types\MetricName; $values = [12.3, 45.6, 78.9, 0.12, 34.5]; $gauges = GaugeCollection::withMetricName( MetricName::fromString( 'your_metric_name' ) ); foreach ( $values as $value ) { $gauges->add( Gauge::fromValue( $value ) ); } # Create the histogram out of the gauge collection and suffix the metric name with "_histogram" $histogram = Histogram::fromGaugeCollectionWithBounds( $gauges, [0.13, 30, 46, 78.9, 90], '_histogram' ) ->withHelp( 'Explanation of the histogram' ); echo $histogram->getMetricsString();
打印
# TYPE your_metric_name_histogram histogram
# HELP your_metric_name_histogram Explanation of the histogram
your_metric_name_histogram_bucket{le="0.13"} 1
your_metric_name_histogram_bucket{le="30.9"} 2
your_metric_name_histogram_bucket{le="46.0"} 4
your_metric_name_histogram_bucket{le="78.9"} 5
your_metric_name_histogram_bucket{le="90.0"} 5
your_metric_name_histogram_bucket{le="+Inf"} 5
your_metric_name_histogram_sum 171.420000
your_metric_name_histogram_count 5
从量表集合创建摘要并响应它
请参阅 examples/summary.php。
<?php declare(strict_types=1); namespace YourVendor\YourProject; use OpenMetricsPhp\Exposition\Text\Collections\GaugeCollection; use OpenMetricsPhp\Exposition\Text\HttpResponse; use OpenMetricsPhp\Exposition\Text\Metrics\Gauge; use OpenMetricsPhp\Exposition\Text\Metrics\Summary; use OpenMetricsPhp\Exposition\Text\Types\MetricName; $values = [1.0, 1.2, 2.0, 2.5, 2.9, 3.1, 4.0, 4.4, 5.0, 9.9]; $gauges = GaugeCollection::withMetricName( MetricName::fromString( 'your_metric_name' ) ); foreach ( $values as $value ) { $gauges->add( Gauge::fromValue( $value ) ); } # Create the summary out of the gauge collection and suffix the metric name with "_summary" $summary = Summary::fromGaugeCollectionWithQuantiles( $gauges, [0.3, 0.5, 0.75, 0.9], '_summary' ) ->withHelp( 'Explanation of the summary' ); echo $summary->getMetricsString();
打印
# TYPE your_metric_name_summary summary
# HELP your_metric_name_summary Explanation of the summary
your_metric_name_summary{quantile="0.3"} 2.000000
your_metric_name_summary{quantile="0.5"} 2.900000
your_metric_name_summary{quantile="0.75"} 4.400000
your_metric_name_summary{quantile="0.9"} 5.000000
your_metric_name_summary_sum 36.000000
your_metric_name_summary_count 10
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