# log_write_batch

(PECL mongo >= 1.5.0)

log_write_batch — Callback When Writing Batches

### 说明

log_write_batch ( array `$server` , array `$writeOptions` , array `$batch` , array `$protocolOptions` )

A callable function, used by the log_write_batch context option, when executing a batch operation.

> Note:

> This is not a real function, only a prototype of how the function should be.

### 参数

`server`

  An array containing the basic information about the server that was picked.

  key | value
  --- | ---
  hash | server hash, example: localhost:27017;-;X;56052
  type | Node type (primary/secondary/mongos/arbiter): 2
  max_bson_size | The maximum BSON Size over the wire this node accepts: 16777216
  max_message_size | The maximum Message Size over the wire this node accepts: 48000000
  request_id | The request identifier for this message: 42

`writeOptions`

  key | value
  --- | ---
  ordered | boolean, if the operation (in case of batch operation) must be executed sequentually (ordered=true)
  writeConcern | An array of writeConcern options (see below)

  writeConcern array values
  key | value
  --- | ---
  fsync | boolean, force flushing to disk before returning
  j | boolean, force journal write before returning
  wtimeout | integer, milliseconds, maximum time the primary is allowed to wait to verify replication
  w | integer=server count, or string=replication-tag

`batch`

  Array, the actual batch operation.

`protocolOptions`

  key | value
  --- | ---
  message_length | The total size (in bytes) of the encoded message being sent over the wire
  request_id | The request identifier for this message: 42
  namespace | The MongoDB namespace used for the protocol message dbname.collectionname

### 更新日志

版本 | 说明
--- | ---
1.5.0 | Only available when connected to MongoDB 2.6.0+