corley / influxdb-sdk
Send your app metrics to InfluxDB
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Requires
- php: >=5.5
- guzzlehttp/guzzle: ~4|~5|~6
Requires (Dev)
- ext-sockets: *
- phpunit/phpunit: 4.*
Suggests
- corley/dbal-influxdb: This library help you to build query
- fabpot/pimple: Allows to prepare the client dependencies in order to require an initialized instance
- symfony/dependency-injection: Prepare a valid instance via the symfony DiC
- zendframework/zend-servicemanager: Use a service locator in order to prepare a valid instance
This package is not auto-updated.
Last update: 2024-11-19 02:10:43 UTC
README
Send metrics to InfluxDB and query for any data.
This project support InfluxDB API >= 0.9
- For InfluxDB v0.8 checkout branch 0.3 (no longer supported)
Supported adapters:
- UDP/IP
- HTTP (via GuzzleHTTP versions: ~5, ~6) - For Guzzle 4 support checkout branch 0.9 (no longer supported)
Install it
Just use composer
$ composer require corley/influxdb-sdk:~1
Or add to your composer.json
file
{ "require": { "corley/influxdb-sdk": "~1" } }
Use it
Add new points:
$client->mark("app-search", [ "key" => "this is my search" ]);
Or use InfluxDB direct messages
$client->mark([ "tags" => [ "dc" => "eu-west-1", ], "points" => [ [ "measurement" => "instance", "fields" => [ "cpu" => 18.12, "free" => 712423, ], ], ] ]);
Retrieve existing points:
$results = $client->query('select * from "app-search"');
InfluxDB client adapters
Actually we supports two network adapters
- UDP/IP - in order to send data via UDP/IP (datagram)
- HTTP - in order to send/retrieve using HTTP messages (connection oriented)
Using UDP/IP Adapter
In order to use the UDP/IP adapter your must have PHP compiled with the sockets
extension.
Usage
$reader = ... $options = new Udp\Options(); $writer = new Udp\Writer($options); $client = new Client($reader, $writer);
UDP/IP option set have only host
and port
properties you configure
database and retention policies directly in your InfluxDB configuration
Using HTTP Adapters
Actually Guzzle is used as HTTP client library
<?php $http = new \GuzzleHttp\Client(); $writer = ... $options = new Http\Options(); $reader = new Http\Reader($http, $options); $client = new Client($reader, $writer);
Mixing readers and writers
Of course you can mix Udp\Ip and Http adapters in order to write data points with UDP/IP protocol but read information using HTTP.
$reader = new Http\Reader($http, $httpOptions); $writer = new Udp\Writer($udpOptions); $client = new Client($reader, $writer); $client->mark(...); // Use UDP/IP support $client->query("SELECT * FROM my_serie"); // Use HTTP support
Or use only the HTTP
$reader = new Http\Reader($http, $options); $writer = new Http\Writer($http, $options); $client = new Client($reader, $writer); $client->mark(...); // Use HTTP support $client->query("SELECT * FROM my_serie"); // Use HTTP support
Query InfluxDB
You can query the time series database using the query method.
$client->query('select * from "mine"');
The adapter returns the json decoded body of the InfluxDB response, something like:
array(1) {
'results' =>
array(1) {
[0] =>
array(1) {
'series' =>
array(1) {
...
}
}
}
}
If you prefere a more simple response than the original one, you can use
corley/influxdb-http-handlers
that convert, the original InfluxDB response, in a more simple response, something like:
array(1) { 'serie_name' => array(2) { [0] => array(4) { 'time' => string(30) "2015-09-09T20:42:07.927267636Z" 'value1' => int(1) 'value2' => int(2) 'valueS' => string(6) "string" } [1] => array(4) { 'time' => string(30) "2015-09-09T20:42:51.332853369Z" 'value1' => int(2) 'value2' => int(4) 'valueS' => string(11) "another-one" } } }
Global tags and retention policy
You can set a set of default tags, that the SDK will add to your metrics:
$options = new Http\Options(); $options->setTags([ "env" => "prod", "region" => "eu-west-1", ]);
The SDK mark all point adding those tags.
You can set a default retentionPolicy using
$options->setRetentionPolicy("myPolicy");
In that way the SDK use that policy instead of default
policy.
Proxies and InfluxDB
If you proxy your InfluxDB typically you have a prefix in your endpoints.
$option->setHost("proxy.influxdb.tld"); $option->setPort(80); $option->setPrefix("/influxdb"); // your prefix is: /influxdb // final url will be: http://proxy.influxdb.tld:80/influxdb/write $client->mark("serie", ["data" => "my-data"]);
Data type management
From InfluxDB version >=0.9.3
integer types are marked with a trailing i
.
This library supports data types, in particular PHP types are mapped to influxdb
in this way by defaults:
And the resulting mapping will be:
$client->mark("serie", [ "value" => 12, // Marked as int64 "elem" => 12.4, // Marked as float64 ]);
Force data type
If you want to ensure that a type is effectively parsed correctly you can force it directly during the send operation
$client->mark("serie", [ "value" => new IntType(12), // Marked as int64 "elem" => new FloatType(12.4), // Marked as float64 "status" => new BoolType(true), // Marked as boolean "line" => new StringType("12w"), // Marked as string ]);
Query Builder
Interested in a Query Builder?
https://github.com/corley/dbal-influxdb
Thanks to Doctrine DBAL (Abstract Layer) you can use the query builder
$qb = $conn->createQueryBuilder(); $qb->select("*") ->from("cpu_load_short") ->where("time = ?") ->setParameter(0, 1434055562000000000); $data = $qb->execute(); foreach ($data->fetchAll() as $element) { // Use your element }
$config = new \Doctrine\DBAL\Configuration(); //.. $connectionParams = array( 'dbname' => 'mydb', 'user' => 'root', 'password' => 'root', 'host' => 'localhost', 'port' => 8086, "driverClass" => "Corley\\DBAL\\Driver\\InfluxDB", ); $conn = \Doctrine\DBAL\DriverManager::getConnection($connectionParams, $config);
Database operations and custom queries
The class InfluxDB\Client
does not support any database operation by itself.
That means that you don't have any helper function for create new databases, or
list actual databases and so on.
Thanks to InfluxDB\Manager
you can use a preset of queries and create your own
personal queries that will run against the Influxdb instance.
Create the manager
The Manager
instance is very simple, you have to create it with a client
instance.
$manager = new Manager($client); // InfluxDB\Client instance
Attach new queries
The manager allows to attach new queries via an helper method addQuery
.
$manager->addQuery("getExceptionsInMinutes", function($minutes) { return "SELECT * FROM app_exceptions WHERE time > now() - {$minutes}m"; }); $manager->getExceptionsInMinutes(10); // The callable name
As you can see you have to label your anonymous function and reuse it via the manager.
In order to collect and reuse custom queries you can define query objects:
class GetExceptionsInMinutes { public function __invoke($minutes) { return "SELECT * FROM app_exceptions WHERE time > now() - {$minutes}m"; } public function __toString() { return "getExceptionsInMinutes"; } } $manager->addQuery(new GetExceptionsInMinutes()); $manager->getExceptionsInMinutes(10); //Use the query
As you can see valid query command should be callable
via the __invoke
method and should be also serializable as strings via __toString
method
Existing queries
This project comes out with a preset of valid queries:
- Create new database
InfluxDB\Query\CreateDatabase
- Drop existing databases
InfluxDB\Query\DeleteDatabase
- List existing databases
InfluxDB\Query\GetDatabases
$manager->addQuery(new CreateDatabase()); $manager->addQuery(new DeleteDatabase()); $manager->addQuery(new GetDatabases());
FAQ
Add sockets support to your PHP
To verify if you have the sockets
extension just issue a:
php -m | grep sockets
If you don't have the sockets
extension, you can proceed in two ways:
- Recompile your PHP whith the
--enable-sockets
flag - Or just compile the
sockets
extension extracting it from the PHP source.
- Download the source relative to the PHP version that you on from here
- Enter in the
ext/sockets
directory - Issue a
phpize && ./configure && make -j && sudo make install
- Add
extension=sockets.so
to your php.ini
Guzzle 4 support
We drop the Guzzle 4 support, but we tested it as working HTTP adapter in up to PHP 7.0 and is stable with this project with version 0.9.3.
If you need Guzzle 4 as HTTP adapter require for 0.9.3 version
compose require corley/influxdb-sdk:0.9.*