influxdb-client-php

This repository contains the reference PHP client for the InfluxDB 2.x.

Note: Use this client library with InfluxDB 2.x and InfluxDB 1.8+ (see details). For connecting to InfluxDB 1.7 or earlier instances, use the influxdb-php client library.

• Installation
  • Install the library
• Usage
  • Creating a client
  • Querying data
  • Writing data
  • Default Tags
• Advanced Usage
  • Check the server status
  • InfluxDB 1.8 API compatibility
  • InfluxDB 2.x management API
  • Writing via UDP
  • Delete data
  • Proxy and redirects
• Contributing
• License

Documentation

This section contains links to the client library documentation.

• Product documentation, Getting Started
• Examples
• API Reference
• Changelog

Installation

The InfluxDB 2 client is bundled and hosted on https://packagist.org/.

Install the library

The client can be installed with composer.

composer require influxdata/influxdb-client-php

Usage

Creating a client

Use InfluxDB2\Client to create a client connected to a running InfluxDB 2 instance.

$client = new InfluxDB2\Client([
    "url" => "http://localhost:8086",
    "token" => "my-token",
    "bucket" => "my-bucket",
    "org" => "my-org",
    "precision" => InfluxDB2\Model\WritePrecision::NS
]);

Client Options

Queries

The result retrieved by QueryApi could be formatted as a:

1. Raw query response
2. Flux data structure: FluxTable, FluxColumn and FluxRecord
3. Stream of FluxRecord

Query raw

Synchronously executes the Flux query and return result as unprocessed String

$this->client = new Client([
    "url" => "http://localhost:8086",
    "token" => "my-token",
    "bucket" => "my-bucket",
    "precision" => WritePrecision::NS,
    "org" => "my-org",
    "debug" => false
]);
$this->queryApi = $this->client->createQueryApi();
$result = $this->queryApi->queryRaw(
            'from(bucket:"my-bucket") |> range(start: 1970-01-01T00:00:00.000000001Z) |> last()');

Synchronous query

Synchronously executes the Flux query and return result as a Array of FluxTables

$this->client = new Client([
    "url" => "http://localhost:8086",
    "token" => "my-token",
    "bucket" => "my-bucket",
    "precision" => WritePrecision::NS,
    "org" => "my-org",
    "debug" => false
]);
$this->queryApi = $this->client->createQueryApi();
$result = $this->queryApi->query(
            'from(bucket:"my-bucket") |> range(start: 1970-01-01T00:00:00.000000001Z) |> last()');

This can then easily be encoded to JSON with json_encode

header('Content-type:application/json;charset=utf-8');
echo json_encode( $result, JSON_PRETTY_PRINT ) ;

Query stream

Synchronously executes the Flux query and return stream of FluxRecord

$this->client = new Client([
    "url" => "http://localhost:8086",
    "token" => "my-token",
    "bucket" => "my-bucket",
    "precision" => WritePrecision::NS,
    "org" => "my-org",
    "debug" => false
]);
$this->queryApi = $this->client->createQueryApi();
$parser = $this->queryApi->queryStream(
            'from(bucket:"my-bucket") |> range(start: 1970-01-01T00:00:00.000000001Z) |> last()');
foreach ($parser->each() as $record)
{
    ...
}

Parameterized queries

InfluxDB Cloud supports Parameterized Queries that let you dynamically change values in a query using the InfluxDB API. Parameterized queries make Flux queries more reusable and can also be used to help prevent injection attacks.

InfluxDB Cloud inserts the params object into the Flux query as a Flux record named params. Use dot or bracket notation to access parameters in the params record in your Flux query. Parameterized Flux queries support only int , float, and string data types. To convert the supported data types into other Flux basic data types, use Flux type conversion functions.

Parameterized query example:

⚠️ Parameterized Queries are supported only in InfluxDB Cloud, currently there is no support in InfluxDB OSS.

<?php
require __DIR__ . '/../vendor/autoload.php';
use InfluxDB2\Client;
use InfluxDB2\Model\Query;
use InfluxDB2\Point;
use InfluxDB2\WriteType as WriteType;
$url = "https://us-west-2-1.aws.cloud2.influxdata.com";
$organization = 'my-org';
$bucket = 'my-bucket';
$token = 'my-token';
$client = new Client([
    "url" => $url,
    "token" => $token,
    "bucket" => $bucket,
    "org" => $organization,
    "precision" => InfluxDB2\Model\WritePrecision::NS,
    "debug" => false
]);
$writeApi = $client->createWriteApi(["writeType" => WriteType::SYNCHRONOUS]);
$queryApi = $client->createQueryApi();
$today = new DateTime("now");
$yesterday = $today->sub(new DateInterval("P1D"));
$p = new Point("temperature");
$p->addTag("location", "north")->addField("value", 60)->time($yesterday);
$writeApi->write($p);
$writeApi->close();
//
// Query range start parameter using duration
//
$parameterizedQuery = "from(bucket: params.bucketParam) |> range(start: duration(v: params.startParam))";
$query = new Query();
$query->setQuery($parameterizedQuery);
$query->setParams(["bucketParam" => "my-bucket", "startParam" => "-1d"]);
$tables = $queryApi->query($query);
foreach ($tables as $table) {
    foreach ($table->records as $record) {
        var_export($record->values);
    }
}
//
// Query range start parameter using DateTime
//
$parameterizedQuery = "from(bucket: params.bucketParam) |> range(start: time(v: params.startParam))";
$query->setParams(["bucketParam" => "my-bucket", "startParam" => $yesterday]);
$query->setQuery($parameterizedQuery);
$tables = $queryApi->query($query);
foreach ($tables as $table) {
    foreach ($table->records as $record) {
        var_export($record->values);
    }
}
$client->close();

Writing data

The WriteApi supports synchronous and batching writes into InfluxDB 2.x. In default api uses synchronous write. To enable batching you can use WriteOption.

$client = new InfluxDB2\Client(["url" => "http://localhost:8086", "token" => "my-token",
    "bucket" => "my-bucket",
    "org" => "my-org",
    "precision" => InfluxDB2\Model\WritePrecision::NS
]);
$write_api = $client->createWriteApi();
$write_api->write('h2o,location=west value=33i 15');

Batching

The writes are processed in batches which are configurable by WriteOptions:

use InfluxDB2\Client;
use InfluxDB2\WriteType as WriteType;
$client = new Client(["url" => "http://localhost:8086", "token" => "my-token",
    "bucket" => "my-bucket",
    "org" => "my-org",
    "precision" => InfluxDB2\Model\WritePrecision::NS
]);
$writeApi = $client->createWriteApi(
    ["writeType" => WriteType::BATCHING, 'batchSize' => 1000]);
foreach (range(1, 10000) as $number) {
    $writeApi->write("mem,host=aws_europe,type=batch value=1i $number");
}
// flush remaining data
$writeApi->close();

Time precision

Configure default time precision:

$client = new InfluxDB2\Client(["url" => "http://localhost:8086", "token" => "my-token",
    "bucket" => "my-bucket",
    "org" => "my-org",
    "precision" => \InfluxDB2\Model\WritePrecision::NS
]);

Configure precision per write:

$client = new InfluxDB2\Client([
    "url" => "http://localhost:8086",
    "token" => "my-token",
    "bucket" => "my-bucket",
    "org" => "my-org",
]);
$writeApi = $client->createWriteApi();
$writeApi->write('h2o,location=west value=33i 15', \InfluxDB2\Model\WritePrecision::MS);

Allowed values for precision are:

• WritePrecision::NS for nanosecond
• WritePrecision::US for microsecond
• WritePrecision::MS for millisecond
• WritePrecision::S for second

Configure destination

Default bucket and organization destination are configured via InfluxDB2\Client:

$client = new InfluxDB2\Client([
    "url" => "http://localhost:8086",
    "token" => "my-token",
    "bucket" => "my-bucket",
]);

but there is also possibility to override configuration per write:

$client = new InfluxDB2\Client(["url" => "http://localhost:8086", "token" => "my-token"]);
$writeApi = $client->createWriteApi();
$writeApi->write('h2o,location=west value=33i 15', \InfluxDB2\Model\WritePrecision::MS, "production-bucket", "customer-1");

Data format

The data could be written as:

1. string that is formatted as a InfluxDB’s line protocol
2. array with keys: name, tags, fields and time
3. Data Point structure
4. Array of above items

$client = new InfluxDB2\Client([
    "url" => "http://localhost:8086",
    "token" => "my-token",
    "bucket" => "my-bucket",
    "org" => "my-org",
    "precision" => InfluxDB2\Model\WritePrecision::US
]);
$writeApi = $client->createWriteApi();
//data in Point structure
$point=InfluxDB2\Point::measurement("h2o")
    ->addTag("location", "europe")
    ->addField("level",2)
    ->time(microtime(true));
$writeApi->write($point);
//data in array structure
$dataArray = ['name' => 'cpu', 
    'tags' => ['host' => 'server_nl', 'region' => 'us'],
    'fields' => ['internal' => 5, 'external' => 6],
    'time' => microtime(true)];
$writeApi->write($dataArray);
//write lineprotocol
$writeApi->write('h2o,location=west value=33i 15');

Default Tags

Sometimes is useful to store same information in every measurement e.g. hostname, location, customer. The client is able to use static value, app settings or env variable as a tag value.

The expressions:

• California Miner - static value
• ${env.hostname} - environment property

Via API

$this->client = new Client([
    "url" => "http://localhost:8086",
    "token" => "my-token",
    "bucket" => "my-bucket",
    "precision" => WritePrecision::NS,
    "org" => "my-org",
    "tags" => ['id' => '132-987-655', 
        'hostname' => '${env.Hostname}']
]);
$writeApi = $this->client->createWriteApi(null, ['data_center' => '${env.data_center}']);
$writeApi->pointSettings->addDefaultTag('customer', 'California Miner');
$point = Point::measurement('h2o')
            ->addTag('location', 'europe')
            ->addField('level', 2);
$this->writeApi->write($point);

Advanced Usage

Check the server status

Server availability can be checked using the $client->ping(); method. That is equivalent of the influx ping.

InfluxDB 1.8 API compatibility

InfluxDB 1.8.0 introduced forward compatibility APIs for InfluxDB 2.x. This allow you to easily move from InfluxDB 1.x to InfluxDB 2.x Cloud or open source.

The following forward compatible APIs are available:

For detail info see InfluxDB 1.8 example.

InfluxDB 2.x management API

InfluxDB 2.x API client is generated using influxdb-clients-apigen. Sources are in InfluxDB2\Service\ and InfluxDB2\Model\ packages.

The following example shows how to use OrganizationService and BucketService to create a new bucket.

require __DIR__ . '/../vendor/autoload.php';
use InfluxDB2\Client;
use InfluxDB2\Model\BucketRetentionRules;
use InfluxDB2\Model\Organization;
use InfluxDB2\Model\PostBucketRequest;
use InfluxDB2\Service\BucketsService;
use InfluxDB2\Service\OrganizationsService;
$organization = 'my-org';
$bucket = 'my-bucket';
$token = 'my-token';
$client = new Client([
    "url" => "http://localhost:8086",
    "token" => $token,
    "bucket" => $bucket,
    "org" => $organization,
    "precision" => InfluxDB2\Model\WritePrecision::S
]);
function findMyOrg($client): ?Organization
{
    /** @var OrganizationsService $orgService */
    $orgService = $client->createService(OrganizationsService::class);
    $orgs = $orgService->getOrgs()->getOrgs();
    foreach ($orgs as $org) {
        if ($org->getName() == $client->options["org"]) {
            return $org;
        }
    }
    return null;
}
$bucketsService = $client->createService(BucketsService::class);
$rule = new BucketRetentionRules();
$rule->setEverySeconds(3600);
$bucketName = "example-bucket-" . microtime();
$bucketRequest = new PostBucketRequest();
$bucketRequest->setName($bucketName)
    ->setRetentionRules([$rule])
    ->setOrgId(findMyOrg($client)->getId());
//create bucket
$respBucket = $bucketsService->postBuckets($bucketRequest);
print $respBucket;
$client->close();

Writing via UDP

Sending via UDP will be useful in cases when the execution time is critical to avoid potential delays (even timeouts) in sending metrics to the InfluxDB while are problems with the database or network connectivity.
As is known, sending via UDP occurs without waiting for a response, unlike TCP (HTTP).

UDP Writer Requirements:

1. Installed ext-sockets
2. Since Influxdb 2.0+ does not support UDP protocol natively you need to install and configure Telegraf plugin: https://docs.influxdata.com/telegraf/v1.16/plugins/#socket_listener
3. Extra config option passed to client: udpPort. Optionally you can specify udpHost, otherwise udpHost will parsed from url option
4. Extra config option passed to client: ipVersion. Optionally you can specify the ip version, defaults to IPv4

$client = new InfluxDB2\Client(["url" => "http://localhost:8086", "token" => "my-token",
    "bucket" => "my-bucket",
    "org" => "my-org",
    "precision" => InfluxDB2\Model\WritePrecision::NS,
    "udpPort" => 8094,
    "ipVersion" => 6,
]);
$writer = $client->createUdpWriter();
$writer->write('h2o,location=west value=33i 15');
$writer->close();

Delete data

The DefaultService.php supports deletes points from an InfluxDB bucket.

<?php
/**
 * Shows how to delete data from InfluxDB by client
 */
use InfluxDB2\Client;
use InfluxDB2\Model\DeletePredicateRequest;
use InfluxDB2\Service\DeleteService;
$url = 'http://localhost:8086';
$token = 'my-token';
$org = 'my-org';
$bucket = 'my-bucket';
$client = new Client([
    "url" => $url,
    "token" => $token,
    "bucket" => $bucket,
    "org" => $org,
    "precision" => InfluxDB2\Model\WritePrecision::S
]);
//
// Delete data by measurement and tag value
//
/** @var DeleteService $service */
$service = $client->createService(DeleteService::class);
$predicate = new DeletePredicateRequest();
$predicate->setStart(DateTime::createFromFormat('Y', '2020'));
$predicate->setStop(new DateTime());
$predicate->setPredicate("_measurement=\"mem\" AND host=\"host1\"");
$service->postDelete($predicate, null, $org, $bucket);
$client->close();

For more details see DeleteDataExample.php.

Proxy and redirects

You can configure InfluxDB PHP client behind a proxy in two ways:

1. Using environment variable

Set environment variable HTTP_PROXY or HTTPS_PROXY based on the scheme of your server url. For more info see Guzzle docs - environment Variables.

2. Configure client to use proxy via Options

You can pass a proxy configuration when creating the client:

$client = new InfluxDB2\Client([
  "url" => "http://localhost:8086", 
  "token" => "my-token",
  "bucket" => "my-bucket",
  "org" => "my-org",
  "proxy" => "http://192.168.16.1:10",
]);

For more info see Guzzle docs - proxy.

Redirects

Client automatically follows HTTP redirects. You can configure redirects behaviour by a allow_redirects configuration:

$client = new InfluxDB2\Client([
  "url" => "http://localhost:8086", 
  "token" => "my-token",
  "bucket" => "my-bucket",
  "org" => "my-org",
  "allow_redirects" => false,
]);

For more info see Guzzle docs - allow_redirects

Local tests

# run unit & integration tests
make test

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/influxdata/influxdb-client-php.

License

The gem is available as open source under the terms of the MIT License.