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SQSMessageCounter

Using the Amazon Simple Queue Service (SQS), counts the number of messages in an Amazon SQS queue.

Usage Notes

The performance of this transformer is dependent on the amount of memory allocated to the Java Virtual Machine (JVM). The following environment variables allow you to specify memory available to Java Plugins:

  • FME_JVM_MIN_HEAP_SIZE: Initial heap size for initializing the JVM. Default value is 1024K.

  • FME32_JVM_MIN_HEAP_SIZE: Same as FME_JVM_MIN_HEAP_SIZE, but applies to the 32-bit version of FME Desktop on Windows, and takes precedence over FME_JVM_MIN_HEAP_SIZE.

  • FME_JVM_MAX_HEAP_SIZE: Maximum heap size for initializing JVM. Default value is 16384K.

  • FME32_JVM_MAX_HEAP_SIZE: Same as FME_JVM_MAX_HEAP_SIZE, but applies to the 32-bit version of FME Desktop on Windows, and takes precedence over FME_JVM_MAX_HEAP_SIZE.

If unset, the JVM applies the default values. If set, the values must be multiples of 1024K (for example, 4M and 64M, or 4096K and 32768K).

Note: To pass additional parameters used by FME to the Java Virtual Machine, use the JAVA_TOOL_OPTIONS environment variable.

Input Ports

ClosedInput

This transformer accepts any feature.

Output Ports

Output

This transformer outputs all features that enter the transformer, plus the following attributes:

  • sqs_count: The approximate total number of messages in the queue.
  • sqs_count_visible: The approximate number of visible messages in the queue.

Parameters

Amazon Simple Queue Service Parameters

ClosedAmazon SQS Queue URL

The URL of queue where messages are to be sent.

ClosedAWS Access Key ID

An access key associated with a user with permission to send messages to the queue.

ClosedAWS Secret Access Key

A secret key paired with the access key provided.

Options

ClosedCount Output Attribute

The attribute containing the approximate total number of messages in the queue.

ClosedCount Output Attribute (Visible Only)

The attribute containing the approximate number of visible messages in the queue.

Working with SQS

For more information about sending messages using the Simple Queue Service (SQS), see the Amazon Simple Queue Service Subscriber in the FME Server Reference Manual.

Editing Transformer Parameters

Using a set of menu options, transformer parameters can be assigned by referencing other elements in the workspace. More advanced functions, such as an advanced editor and an arithmetic editor, are also available in some transformers. To access a menu of these options, click beside the applicable parameter. For more information, see Transformer Parameter Menu Options.

Transformer Categories

Integrations

Web

FME Licensing Level

FME Professional edition and above

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