# Gearman

# はじめに

» Gearman は、複数のマシンやプロセスに 作業を任せるための汎用的なアプリケーションフレームワークです。これにより、 アプリケーションはタスクを並列で遂行したり、処理の負荷を分散したり、 言語をまたいで関数を呼び出したりできます。このフレームワークは、可用性の高い Webサイトから、データベースのレプリケーションイベントの転送処理まで、 さまざまなアプリケーションで使用できます。

この拡張モジュールは、Gearman のクライアントとワーカーを書くためのクラスを提供します。

- インストール/設定
  - 要件
  - インストール手順
- 定義済み定数
- 例
  - Basic usage
  - Basic Gearman client and worker, background
  - Basic Gearman client and worker, submitting tasks
- GearmanClient — The GearmanClient class
  - GearmanClient::addOptions — Add client options
  - GearmanClient::addServer — Add a job server to the client
  - GearmanClient::addServers — Add a list of job servers to the client
  - GearmanClient::addTask — Add a task to be run in parallel
  - GearmanClient::addTaskBackground — Add a background task to be run in parallel
  - GearmanClient::addTaskHigh — Add a high priority task to run in parallel
  - GearmanClient::addTaskHighBackground — Add a high priority background task to be run in parallel
  - GearmanClient::addTaskLow — Add a low priority task to run in parallel
  - GearmanClient::addTaskLowBackground — Add a low priority background task to be run in parallel
  - GearmanClient::addTaskStatus — Add a task to get status
  - GearmanClient::clearCallbacks — Clear all task callback functions
  - GearmanClient::clone — Create a copy of a GearmanClient object
  - GearmanClient::__construct — Create a GearmanClient instance
  - GearmanClient::context — Get the application context
  - GearmanClient::data — Get the application data (deprecated)
  - GearmanClient::do — Run a single task and return a result [deprecated]
  - GearmanClient::doBackground — Run a task in the background
  - GearmanClient::doHigh — Run a single high priority task
  - GearmanClient::doHighBackground — Run a high priority task in the background
  - GearmanClient::doJobHandle — Get the job handle for the running task
  - GearmanClient::doLow — Run a single low priority task
  - GearmanClient::doLowBackground — Run a low priority task in the background
  - GearmanClient::doNormal — Run a single task and return a result
  - GearmanClient::doStatus — Get the status for the running task
  - GearmanClient::echo — Send data to all job servers to see if they echo it back [deprecated]
  - GearmanClient::error — Returns an error string for the last error encountered
  - GearmanClient::getErrno — Get an errno value
  - GearmanClient::jobStatus — Get the status of a background job
  - GearmanClient::ping — Send data to all job servers to see if they echo it back
  - GearmanClient::removeOptions — Remove client options
  - GearmanClient::returnCode — Get the last Gearman return code
  - GearmanClient::runTasks — Run a list of tasks in parallel
  - GearmanClient::setClientCallback — Callback function when there is a data packet for a task (deprecated)
  - GearmanClient::setCompleteCallback — Set a function to be called on task completion
  - GearmanClient::setContext — Set application context
  - GearmanClient::setCreatedCallback — Set a callback for when a task is queued
  - GearmanClient::setData — Set application data (deprecated)
  - GearmanClient::setDataCallback — Callback function when there is a data packet for a task
  - GearmanClient::setExceptionCallback — Set a callback for worker exceptions
  - GearmanClient::setFailCallback — Set callback for job failure
  - GearmanClient::setOptions — Set client options
  - GearmanClient::setStatusCallback — Set a callback for collecting task status
  - GearmanClient::setTimeout — Set socket I/O activity timeout
  - GearmanClient::setWarningCallback — Set a callback for worker warnings
  - GearmanClient::setWorkloadCallback — Set a callback for accepting incremental data updates
  - GearmanClient::timeout — Get current socket I/O activity timeout value
  - GearmanClient::wait — Wait for I/O activity on all connections in a client
- GearmanJob — The GearmanJob class
  - GearmanJob::complete — Send the result and complete status (deprecated)
  - GearmanJob::__construct — Create a GearmanJob instance
  - GearmanJob::data — Send data for a running job (deprecated)
  - GearmanJob::exception — Send exception for running job (deprecated)
  - GearmanJob::fail — Send fail status (deprecated)
  - GearmanJob::functionName — Get function name
  - GearmanJob::handle — Get the job handle
  - GearmanJob::returnCode — Get last return code
  - GearmanJob::sendComplete — Send the result and complete status
  - GearmanJob::sendData — Send data for a running job
  - GearmanJob::sendException — Send exception for running job (exception)
  - GearmanJob::sendFail — Send fail status
  - GearmanJob::sendStatus — Send status
  - GearmanJob::sendWarning — Send a warning
  - GearmanJob::setReturn — Set a return value
  - GearmanJob::status — Send status (deprecated)
  - GearmanJob::unique — Get the unique identifier
  - GearmanJob::warning — Send a warning (deprecated)
  - GearmanJob::workload — Get workload
  - GearmanJob::workloadSize — Get size of work load
- GearmanTask — The GearmanTask class
  - GearmanTask::__construct — Create a GearmanTask instance
  - GearmanTask::create — Create a task (deprecated)
  - GearmanTask::data — Get data returned for a task
  - GearmanTask::dataSize — Get the size of returned data
  - GearmanTask::function — Get associated function name (deprecated)
  - GearmanTask::functionName — Get associated function name
  - GearmanTask::isKnown — Determine if task is known
  - GearmanTask::isRunning — Test whether the task is currently running
  - GearmanTask::jobHandle — Get the job handle
  - GearmanTask::recvData — Read work or result data into a buffer for a task
  - GearmanTask::returnCode — Get the last return code
  - GearmanTask::sendData — Send data for a task (deprecated)
  - GearmanTask::sendWorkload — Send data for a task
  - GearmanTask::taskDenominator — Get completion percentage denominator
  - GearmanTask::taskNumerator — Get completion percentage numerator
  - GearmanTask::unique — Get the unique identifier for a task
  - GearmanTask::uuid — Get the unique identifier for a task (deprecated)
- GearmanWorker — The GearmanWorker class
  - GearmanWorker::addFunction — Register and add callback function
  - GearmanWorker::addOptions — Add worker options
  - GearmanWorker::addServer — Add a job server
  - GearmanWorker::addServers — Add job servers
  - GearmanWorker::clone — Create a copy of the worker
  - GearmanWorker::__construct — Create a GearmanWorker instance
  - GearmanWorker::echo — Test job server response
  - GearmanWorker::error — Get the last error encountered
  - GearmanWorker::getErrno — Get errno
  - GearmanWorker::options — Get worker options
  - GearmanWorker::register — Register a function with the job server
  - GearmanWorker::removeOptions — Remove worker options
  - GearmanWorker::returnCode — Get last Gearman return code
  - GearmanWorker::setId — Give the worker an identifier so it can be tracked when asking gearmand for the list of available workers
  - GearmanWorker::setOptions — Set worker options
  - GearmanWorker::setTimeout — Set socket I/O activity timeout
  - GearmanWorker::timeout — Get socket I/O activity timeout
  - GearmanWorker::unregister — Unregister a function name with the job servers
  - GearmanWorker::unregisterAll — Unregister all function names with the job servers
  - GearmanWorker::wait — Wait for activity from one of the job servers
  - GearmanWorker::work — Wait for and perform jobs
- GearmanException — The GearmanException class

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