Using the Amazon Simple Queue Service (SQS), receives messages from 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.
- FME_JVM_MAX_HEAP_SIZE: Maximum heap size for initializing JVM. Default value is 16384K.
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
This transformer has no input ports.
Output Ports
Output
Features containing messages received from the specified Amazon SQS queue. The content and other details of the message are stored as attributes of the feature. The following attributes are used:
| Attribute | Description |
|---|---|
| sqs_content | The content of the message. |
| sqs_md5 | The MD5 checksum of the message. |
| sqs_message_id | The ID of the message. |
| sqs_receipt_handle | The ID confirming receipt of the message. |
Parameters
Amazon Simple Queue Service Parameters
Amazon SQS Queue URL
The URL of the Amazon queue to be polled.
AWS Access Key ID
An access key associated with a user with permission to receive messages from the queue.
AWS Secret Access Key
A secret key paired with the access key provided.
Receiver Options
Persistent Receiver
If Yes, the receiver runs indefinitely. If No, enter a maximum number of messages to read in Maximum Messages To Read.
Maximum Messages to Read
If Persistent Receiver is No, the maximum number of messages to read.
Use Queue Default Visibility Timeout
If Yes, received messages use the SQS queue default visibility timeout. If No, enter a new visibility timeout for received messages in Visibility Timeout.
Visibility Timeout
If Use Queue Default Visibility Timeout is No, the new visibility timeout for received messages.
Delete on Receive
Whether or not the receiver deletes each message before receiving a new one. If Yes, messages are deleted from the SQS queue before the feature exits the transformer. If No, use the SQS Deleter transformer to delete messages.
Working with SQS
For more information about receiving messages from a SQS queue using the Simple Queue Service (SQS), see the Amazon Simple Queue Service Publisher 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
FME Licensing Level
FME Professional edition and above
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