Netdata PHP SDK

A production-ready PHP SDK for the Netdata API v3. Covers 22 endpoints across 13 resources with rich DTOs, an immutable query builder, automatic retries, and a testing fake. Zero framework dependencies — works in any PHP 8.2+ project.

Features

13 resource classes covering 22 /api/v3/* endpoints
Rich DTOs (Node, MetricData, Alert, Context, AgentInfo) with automatic v3 response parsing
MetricData with dimension(), latest(), average(), max(), min(), sum(), toTimeSeries()
Immutable fluent query builders (DataQueryRequest, WeightsRequest)
Automatic retry with exponential backoff and jitter on 429/5xx errors
Full exception hierarchy mapped to HTTP status codes
NetdataFake for easy testing with call assertions
Swappable HTTP client via HttpClientInterface
Optional PSR-3 logger support
PHPStan level 9 and PSR-12 compliant

Installation

composer require davit-vardanyan/netdata-php

Quick Start

use DavitVardanyan\Netdata\NetdataClient;

// Connect to Netdata Cloud
$netdata = NetdataClient::make('your-bearer-token');

// Get CPU metrics from the last 10 minutes
$cpu = $netdata->data()->cpu();
echo "Current CPU: " . $cpu->latest('user') . "%\n";
echo "Average CPU: " . round($cpu->average('user'), 2) . "%\n";

// List all monitored nodes
$nodes = $netdata->nodes()->list();
foreach ($nodes as $node) {
    echo "{$node->name} ({$node->os})\n";
}

Configuration

use DavitVardanyan\Netdata\NetdataClient;
use DavitVardanyan\Netdata\Support\Config;

$netdata = new NetdataClient(
    config: new Config(
        token: 'your-bearer-token',              // Required
        baseUrl: 'https://app.netdata.cloud',     // Default
        connectTimeout: 30,                       // Seconds
        readTimeout: 60,                          // Seconds
        maxRetries: 3,                            // Retry on 429/5xx
        retryBaseDelayMs: 1000,                   // Exponential backoff base
    ),
);

Option	Type	Default	Description
`token`	string	required	Netdata API bearer token
`baseUrl`	string	`https://app.netdata.cloud`	API base URL
`connectTimeout`	int	`30`	Connection timeout in seconds
`readTimeout`	int	`60`	Read timeout in seconds
`maxRetries`	int	`3`	Max retry attempts on 429/5xx errors
`retryBaseDelayMs`	int	`1000`	Base delay for exponential backoff (ms)

Available Resources

Accessor	Endpoints	Description
`data()`	`/api/v3/data`	Query metric data with convenience shortcuts
`weights()`	`/api/v3/weights`	Metric weight/correlation analysis
`contexts()`	`/api/v3/contexts`, `/api/v3/context`	Browse and inspect metric contexts
`nodes()`	`/api/v3/nodes`, `/api/v3/node_instances`	List nodes and node instances
`alerts()`	`/api/v3/alerts`, `/api/v3/alert_transitions`, `/api/v3/alert_config`	Alert summaries, transitions, and configuration
`functions()`	`/api/v3/functions`, `/api/v3/function`	List and execute agent functions
`info()`	`/api/v3/info`, `/api/v3/versions`, `/api/v3/me`, `/api/v3/settings`	Agent and version information
`search()`	`/api/v3/q`	Search across metrics, nodes, and contexts
`badges()`	`/api/v3/badge.svg`	Generate badge SVGs
`allMetrics()`	`/api/v3/allmetrics`	Export all metrics (Prometheus, JSON, Shell)
`config()`	`/api/v3/config`, `/api/v3/variable`	Agent configuration and variables
`streamPath()`	`/api/v3/stream_path`	Streaming path information
`claim()`	`/api/v3/claim`	Agent claiming

Usage

Querying Metrics

Convenience Shortcuts

// CPU metrics (last 10 minutes by default)
$cpu = $netdata->data()->cpu();
$cpu = $netdata->data()->cpu(afterSeconds: -3600); // last hour

// Memory metrics
$memory = $netdata->data()->memory();

// Disk metrics
$disk = $netdata->data()->disk();

// Network metrics
$network = $netdata->data()->network();

Full Query Builder

use DavitVardanyan\Netdata\Requests\DataQueryRequest;
use DavitVardanyan\Netdata\Enums\GroupMethod;

$request = DataQueryRequest::make()
    ->contexts('system.cpu')           // required — pipe-separated if multiple
    ->nodes('my-node-id')              // scope to specific nodes
    ->dimensions(['user', 'system'])   // filter dimensions
    ->labels(['env:production'])       // filter by labels
    ->after(-3600)                     // 1 hour ago
    ->before(0)                        // now
    ->points(60)                       // 60 data points
    ->group(GroupMethod::Average)
    ->groupBy('dimension')
    ->aggregation('avg');

$data = $netdata->data()->query($request);

The builder also supports scopeInstances(), filterContexts(), filterNodes(), filterInstances(), filterAlerts(), format(), options(), tier(), and timeoutMs().

Working with MetricData

$cpu = $netdata->data()->cpu();

// Get values for a single dimension
$userValues = $cpu->dimension('user'); // [12.5, 15.8, ...]

// Get the latest value
$current = $cpu->latest('user'); // 18.3

// Statistical methods
$cpu->average('user'); // 16.38
$cpu->max('user');     // 25.1
$cpu->min('user');     // 10.2
$cpu->sum('user');     // 81.9

// Convert to charting format
$timeSeries = $cpu->toTimeSeries();
// [['timestamp' => 1709550000, 'user' => 12.5, 'system' => 3.2, ...], ...]

// Metadata
$cpu->labels;     // ['guest_nice', 'guest', 'steal', 'softirq', 'irq', 'user', ...]
$cpu->timestamps; // [1709550000, 1709550020, ...]
$cpu->points;     // 60
$cpu->after;      // 1709549400
$cpu->before;     // 1709550000
$cpu->isEmpty();  // false

Listing Nodes

$nodes = $netdata->nodes()->list();

foreach ($nodes as $node) {
    echo "{$node->name} (OS: {$node->os})\n";
    echo "  Version: {$node->version}\n";
    echo "  Arch: {$node->architecture}, CPUs: {$node->cpus}\n";
}

// With scoping
$nodes = $netdata->nodes()->list(scopeNodes: 'node-1|node-2');

// Node instances
$instances = $netdata->nodes()->instances();

The Node DTO provides: id, name, os, osName, osVersion, kernelName, kernelVersion, architecture, cpus, memory, diskSpace, version, machineGuid, services.

Browsing Contexts

$contexts = $netdata->contexts()->list();

foreach ($contexts as $context) {
    echo "{$context->id} ({$context->family}) - {$context->units}\n";
}

// Get a single context
$ctx = $netdata->contexts()->get('system.cpu');
echo "Priority: {$ctx->priority}, Units: {$ctx->units}\n";

The Context DTO provides: id, name, family, chartType, units, priority, firstEntry, lastEntry.

Alerts

$alerts = $netdata->alerts()->list();

foreach ($alerts as $alert) {
    echo "{$alert->name}: {$alert->status->value} ({$alert->chart})\n";
}

// Filter by status
$critical = $netdata->alerts()->list(status: 'CRITICAL');

// Alert transitions (history)
$transitions = $netdata->alerts()->transitions(after: -86400);

// Alert configuration by hash ID
$config = $netdata->alerts()->config();

The Alert DTO provides: name, chart, status (enum: critical, warning, clear, undefined, uninitialized), value, units, info, lastStatusChange.

Weights Analysis

use DavitVardanyan\Netdata\Requests\WeightsRequest;
use DavitVardanyan\Netdata\Enums\WeightsMethod;

$request = WeightsRequest::make()
    ->contexts('system.cpu')
    ->after(-600)
    ->before(0)
    ->method(WeightsMethod::Ks2)
    ->baseline(-1200, -600);

$weights = $netdata->weights()->query($request);

Agent Info

$info = $netdata->info()->get();
echo "Agent {$info->version} on {$info->hostname}\n";
echo "OS: {$info->os}, Arch: {$info->architecture}, CPUs: {$info->cpus}\n";

// Other info endpoints
$versions = $netdata->info()->versions();
$me = $netdata->info()->me();
$settings = $netdata->info()->settings();

Functions

// List available functions
$functions = $netdata->functions()->list();

// Execute a function
$result = $netdata->functions()->execute('processes');

Search

$results = $netdata->search()->query('cpu');
// Returns raw array with keys: nodes, contexts, searches, etc.

Badges

$svg = $netdata->badges()->svg('system.cpu', dimension: 'user');
// Returns raw SVG string

All Metrics Export

use DavitVardanyan\Netdata\Enums\AllMetricsFormat;

// Prometheus format
$metrics = $netdata->allMetrics()->get(AllMetricsFormat::Prometheus);

// JSON format
$metrics = $netdata->allMetrics()->get(AllMetricsFormat::Json);

Configuration

// Get full config tree
$tree = $netdata->config()->tree();

// Get specific config
$item = $netdata->config()->get('some-config-id');

// Update config
$result = $netdata->config()->update(['key' => 'value']);

// Get variables
$vars = $netdata->config()->variable(chart: 'system.cpu');

Stream Path & Claiming

// Stream path info
$paths = $netdata->streamPath()->get();

// Claim info
$claim = $netdata->claim()->info();

Custom HTTP Client

Implement HttpClientInterface to use your own HTTP client:

use DavitVardanyan\Netdata\Contracts\HttpClientInterface;

class MyHttpClient implements HttpClientInterface
{
    public function get(string $uri, array $query = [], array $headers = []): array
    {
        // Must return ['status' => int, 'headers' => array, 'body' => array]
    }

    public function post(string $uri, array $data = [], array $headers = []): array
    {
        // Must return ['status' => int, 'headers' => array, 'body' => array]
    }

    public function getRaw(string $uri, array $query = [], array $headers = []): string
    {
        // Must return raw response body as string
    }
}

$netdata = new NetdataClient(
    config: new Config(token: 'your-token'),
    httpClient: new MyHttpClient(),
);

Logging

Pass any PSR-3 compatible logger:

use Monolog\Logger;
use Monolog\Handler\StreamHandler;

$logger = new Logger('netdata');
$logger->pushHandler(new StreamHandler('php://stderr', Logger::DEBUG));

$netdata = new NetdataClient(
    config: new Config(token: 'your-token'),
    logger: $logger,
);

Requests and responses are logged at debug level. Retry attempts are logged at warning level.

Error Handling

All exceptions extend NetdataException:

use DavitVardanyan\Netdata\Exceptions\AuthenticationException;
use DavitVardanyan\Netdata\Exceptions\NotFoundException;
use DavitVardanyan\Netdata\Exceptions\RateLimitException;
use DavitVardanyan\Netdata\Exceptions\ValidationException;
use DavitVardanyan\Netdata\Exceptions\ApiException;
use DavitVardanyan\Netdata\Exceptions\NetdataException;

try {
    $nodes = $netdata->nodes()->list();
} catch (AuthenticationException $e) {
    // 401 - Invalid or expired token
} catch (NotFoundException $e) {
    // 404 - Resource not found
} catch (RateLimitException $e) {
    // 429 - Rate limited (auto-retried by default)
    $retryAfter = $e->retryAfter; // seconds until retry is safe
} catch (ValidationException $e) {
    // 422 - Invalid request parameters
} catch (ApiException $e) {
    // 5xx - Server errors (auto-retried by default)
} catch (NetdataException $e) {
    // Base exception - catches all of the above
    $responseBody = $e->responseBody; // raw API response
}

Exception	HTTP Status	Auto-Retry
`AuthenticationException`	401	No
`NotFoundException`	404	No
`ValidationException`	422	No
`RateLimitException`	429	Yes
`ApiException`	5xx	Yes

Testing

Use NetdataFake to mock API calls in your tests:

use DavitVardanyan\Netdata\Testing\NetdataFake;

$fake = NetdataFake::create()
    ->fakeNodes([
        ['id' => 'node-1', 'name' => 'web-server', 'os' => 'linux'],
        ['id' => 'node-2', 'name' => 'db-server', 'os' => 'linux'],
    ])
    ->fakeAlerts([
        'alerts' => [
            ['nm' => 'cpu_high', 'sum' => 'CPU usage is high', 'cr' => 0, 'wr' => 1, 'cl' => 0, 'ctx' => ['system.cpu']],
        ],
    ])
    ->fakeInfo([
        'version' => 'v2.9.0', 'uid' => 'uid', 'hostname' => 'host',
        'os' => 'linux', 'architecture' => 'x86_64', 'cpus' => 4, 'host_labels' => [],
    ]);

$client = $fake->toClient();

// Use in your tests
$nodes = $client->nodes()->list();
assert($nodes->count() === 2);

// Assert calls were made
$fake->assertCalled('/api/v3/nodes');
$fake->assertCalledTimes('/api/v3/nodes', 1);
$fake->assertNothingSent(); // fails if any calls were recorded

Convenience Fake Methods

$fake = NetdataFake::create()
    ->fakeData([...])           // /api/v3/data
    ->fakeNodes([...])          // /api/v3/nodes
    ->fakeAlerts([...])         // /api/v3/alerts
    ->fakeContexts([...])       // /api/v3/contexts
    ->fakeWeights([...])        // /api/v3/weights
    ->fakeInfo([...])           // /api/v3/info
    ->fakeFunctions([...])      // /api/v3/functions
    ->fakeSearch([...]);        // /api/v3/q

Faking Raw Responses

$fake = NetdataFake::create()
    ->fakeRawResponse('/api/v3/badge.svg', '<svg>badge</svg>')
    ->fakeRawResponse('/api/v3/allmetrics', 'system_cpu{dim="user"} 12.5');

Faking Arbitrary Responses

$fake = NetdataFake::create()
    ->fakeResponse('/api/v3/alert_config', ['configs' => [...]]);

Contributing

Fork the repository
Create your feature branch (git checkout -b feature/amazing-feature)

Run the quality checks:

composer install
vendor/bin/phpunit
vendor/bin/phpstan analyse
vendor/bin/php-cs-fixer fix

Commit your changes
Push to the branch
Open a Pull Request

License

The MIT License (MIT). See LICENSE for more information.

Name		Name	Last commit message	Last commit date
.github/workflows		.github/workflows
src		src
tests		tests
.editorconfig		.editorconfig
.env.example		.env.example
.gitignore		.gitignore
.php-cs-fixer.dist.php		.php-cs-fixer.dist.php
CHANGELOG.md		CHANGELOG.md
LICENSE		LICENSE
README.md		README.md
composer.json		composer.json
phpstan.neon		phpstan.neon
phpunit.xml		phpunit.xml
test-integration.php		test-integration.php

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Netdata PHP SDK

Features

Installation

Quick Start

Configuration

Available Resources

Usage

Querying Metrics

Convenience Shortcuts

Full Query Builder

Working with MetricData

Listing Nodes

Browsing Contexts

Alerts

Weights Analysis

Agent Info

Functions

Search

Badges

All Metrics Export

Configuration

Stream Path & Claiming

Custom HTTP Client

Logging

Error Handling

Testing

Convenience Fake Methods

Faking Raw Responses

Faking Arbitrary Responses

Contributing

License

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Netdata PHP SDK

Features

Installation

Quick Start

Configuration

Available Resources

Usage

Querying Metrics

Convenience Shortcuts

Full Query Builder

Working with MetricData

Listing Nodes

Browsing Contexts

Alerts

Weights Analysis

Agent Info

Functions

Search

Badges

All Metrics Export

Configuration

Stream Path & Claiming

Custom HTTP Client

Logging

Error Handling

Testing

Convenience Fake Methods

Faking Raw Responses

Faking Arbitrary Responses

Contributing

License

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