Code Coverage |
||||||||||
Lines |
Functions and Methods |
Classes and Traits |
||||||||
Total | |
0.00% |
0 / 44 |
|
0.00% |
0 / 17 |
CRAP | |
0.00% |
0 / 1 |
BaseMetric | |
0.00% |
0 / 44 |
|
0.00% |
0 / 17 |
812 | |
0.00% |
0 / 1 |
__construct | |
0.00% |
0 / 2 |
|
0.00% |
0 / 1 |
2 | |||
addSample | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
setSampleRate | |
0.00% |
0 / 4 |
|
0.00% |
0 / 1 |
6 | |||
getName | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
getSampleRate | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
getSamples | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
getSampleCount | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
addLabel | |
0.00% |
0 / 11 |
|
0.00% |
0 / 1 |
30 | |||
getStatsdDataFactory | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
withStatsdDataFactory | |
0.00% |
0 / 2 |
|
0.00% |
0 / 1 |
2 | |||
setStatsdNamespaces | |
0.00% |
0 / 9 |
|
0.00% |
0 / 1 |
42 | |||
getStatsdNamespaces | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
getLabelKeys | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
getLabelValues | |
0.00% |
0 / 5 |
|
0.00% |
0 / 1 |
6 | |||
clearLabels | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
getComponent | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 | |||
hasSamples | |
0.00% |
0 / 1 |
|
0.00% |
0 / 1 |
2 |
1 | <?php |
2 | /** |
3 | * This program is free software; you can redistribute it and/or modify |
4 | * it under the terms of the GNU General Public License as published by |
5 | * the Free Software Foundation; either version 2 of the License, or |
6 | * (at your option) any later version. |
7 | * |
8 | * This program is distributed in the hope that it will be useful, |
9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
11 | * GNU General Public License for more details. |
12 | * |
13 | * You should have received a copy of the GNU General Public License along |
14 | * with this program; if not, write to the Free Software Foundation, Inc., |
15 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
16 | * http://www.gnu.org/copyleft/gpl.html |
17 | * @file |
18 | */ |
19 | |
20 | declare( strict_types=1 ); |
21 | |
22 | namespace Wikimedia\Stats\Metrics; |
23 | |
24 | use InvalidArgumentException; |
25 | use Wikimedia\Stats\Exceptions\IllegalOperationException; |
26 | use Wikimedia\Stats\Exceptions\InvalidConfigurationException; |
27 | use Wikimedia\Stats\IBufferingStatsdDataFactory; |
28 | use Wikimedia\Stats\Sample; |
29 | use Wikimedia\Stats\StatsUtils; |
30 | |
31 | /** |
32 | * Base Metric Implementation V1 |
33 | * |
34 | * Implements shared Metric functionality: |
35 | * * Label validation and handling |
36 | * * Sample rate validation and handling |
37 | * * Sample generation |
38 | * * Common properties |
39 | * * StatsD transition support |
40 | * |
41 | * @author Cole White |
42 | * @since 1.41 |
43 | */ |
44 | class BaseMetric implements BaseMetricInterface { |
45 | |
46 | private float $sampleRate = StatsUtils::DEFAULT_SAMPLE_RATE; |
47 | private string $name; |
48 | private string $component; |
49 | |
50 | /** @var array<string,string|null> key-value pairs of metric-specific labels */ |
51 | private array $workingLabels = []; |
52 | |
53 | /** @var Sample[] */ |
54 | private array $samples = []; |
55 | |
56 | private ?IBufferingStatsdDataFactory $statsdDataFactory = null; |
57 | |
58 | /** @var string[] */ |
59 | private array $statsdNamespaces = []; |
60 | |
61 | /** @inheritDoc */ |
62 | public function __construct( string $component, string $name ) { |
63 | $this->component = $component; |
64 | $this->name = StatsUtils::normalizeString( $name ); |
65 | } |
66 | |
67 | /** @inheritDoc */ |
68 | public function addSample( Sample $sample ): void { |
69 | $this->samples[] = $sample; |
70 | } |
71 | |
72 | /** @inheritDoc */ |
73 | public function setSampleRate( float $sampleRate ): void { |
74 | if ( $this->hasSamples() ) { |
75 | throw new IllegalOperationException( 'Cannot change sample rate on metric with recorded samples.' ); |
76 | } |
77 | StatsUtils::validateNewSampleRate( $sampleRate ); |
78 | $this->sampleRate = $sampleRate; |
79 | } |
80 | |
81 | /** @inheritDoc */ |
82 | public function getName(): string { |
83 | return $this->name; |
84 | } |
85 | |
86 | /** @inheritDoc */ |
87 | public function getSampleRate(): float { |
88 | return $this->sampleRate; |
89 | } |
90 | |
91 | /** @inheritDoc */ |
92 | public function getSamples(): array { |
93 | return StatsUtils::getFilteredSamples( $this->sampleRate, $this->samples ); |
94 | } |
95 | |
96 | /** @inheritDoc */ |
97 | public function getSampleCount(): int { |
98 | return count( $this->samples ); |
99 | } |
100 | |
101 | /** @inheritDoc */ |
102 | public function addLabel( string $key, string $value ): void { |
103 | // Performance optimization: Assume the key is valid and already registered |
104 | if ( !array_key_exists( $key, $this->workingLabels ) ) { |
105 | try { |
106 | StatsUtils::validateLabelKey( $key ); |
107 | } catch ( InvalidConfigurationException $e ) { |
108 | trigger_error( |
109 | "Stats: ($this->name) Non-normalized label keys are deprecated, found '$key'", |
110 | E_USER_WARNING ); |
111 | $key = StatsUtils::normalizeString( $key ); |
112 | } |
113 | if ( $this->hasSamples() && !array_key_exists( $key, $this->workingLabels ) ) { |
114 | throw new IllegalOperationException( 'Cannot add labels to a metric containing samples' ); |
115 | } |
116 | } |
117 | |
118 | StatsUtils::validateLabelValue( $value ); |
119 | $this->workingLabels[$key] = StatsUtils::normalizeString( $value ); |
120 | } |
121 | |
122 | /** @inheritDoc */ |
123 | public function getStatsdDataFactory() { |
124 | return $this->statsdDataFactory; |
125 | } |
126 | |
127 | /** @inheritDoc */ |
128 | public function withStatsdDataFactory( $statsdDataFactory ): BaseMetricInterface { |
129 | $this->statsdDataFactory = $statsdDataFactory; |
130 | return $this; |
131 | } |
132 | |
133 | /** @inheritDoc */ |
134 | public function setStatsdNamespaces( $statsdNamespaces ): void { |
135 | if ( $this->statsdDataFactory === null ) { |
136 | return; |
137 | } |
138 | $statsdNamespaces = is_array( $statsdNamespaces ) ? $statsdNamespaces : [ $statsdNamespaces ]; |
139 | |
140 | foreach ( $statsdNamespaces as $namespace ) { |
141 | if ( $namespace === '' ) { |
142 | throw new InvalidArgumentException( 'StatsD namespace cannot be empty.' ); |
143 | } |
144 | if ( !is_string( $namespace ) ) { |
145 | throw new InvalidArgumentException( 'StatsD namespace must be a string.' ); |
146 | } |
147 | } |
148 | $this->statsdNamespaces = $statsdNamespaces; |
149 | } |
150 | |
151 | /** @inheritDoc */ |
152 | public function getStatsdNamespaces(): array { |
153 | return $this->statsdNamespaces; |
154 | } |
155 | |
156 | /** @return string[] */ |
157 | public function getLabelKeys(): array { |
158 | return array_keys( $this->workingLabels ); |
159 | } |
160 | |
161 | /** |
162 | * @return string[] |
163 | */ |
164 | public function getLabelValues(): array { |
165 | # make sure all labels are accounted for |
166 | if ( in_array( null, $this->workingLabels, true ) ) { |
167 | throw new IllegalOperationException( |
168 | "Stats: ({$this->getName()}) Cannot associate label keys with label values - " |
169 | . "Not all initialized labels have an assigned value." ); |
170 | } |
171 | |
172 | return array_values( $this->workingLabels ); |
173 | } |
174 | |
175 | /** @inheritDoc */ |
176 | public function clearLabels(): void { |
177 | $this->workingLabels = array_fill_keys( array_keys( $this->workingLabels ), null ); |
178 | } |
179 | |
180 | /** @inheritDoc */ |
181 | public function getComponent(): string { |
182 | return $this->component; |
183 | } |
184 | |
185 | private function hasSamples(): bool { |
186 | return (bool)$this->samples; |
187 | } |
188 | |
189 | } |