Creating ActiveMQ Input Data Source

Allows connection to Apache’s ActiveMQ message bus on a real-time streaming basis. Specifically, the connector allows Panopticon Streams to subscribe to XML, JSON or FIX based messages that are published on topics. The data format itself is arbitrary, and consequently, the connection includes the message definition.

  1. In the New Data Source page, select Input > Active MQ in the Connector drop-down list.
  2. Enter the following information:
    Property Description

    Broker

    The location of the message broker. Default is tcp://localhost:61616.

    User Id

    The user Id that will be used to connect to the ActiveMQ service.

    Password

    The password to connect to the ActiveMQ service.

    Topic

    The topic or queue physical name. Default is topic://topicname.*

     

  3. Select/unselect the Use durable subscription checkbox.

    NOTE: When connecting to a message bus, it is recommended to disable durable messaging. When it is enabled, this puts a heavier load to the server, and slows down the start and stop of subscriptions.

  4. Select/unselect Messages can contain partial data checkbox.
  5. Select the Message Type.
  6. Select either the period (.) or comma (,) as the Decimal Separator.

    NOTE: Prepend 'default:' for the elements falling under default namespace.

  7. Click   to the fetch the schema based on the connection details. Consequently, the list of columns with the data type found from inspecting the first ‘n’ rows of the input data source is populated and the Save button is enabled.
  8. You can also opt to load or save a copy of the column definition.
  9. You can also opt to click   to add columns to the MQ connection that represent sections of the message. Then enter or select:

     

    Property Description

    Name

    The column name of the source schema.

    Fix Tag/JsonPath/Text Column Index/XPath

    The Fix Tag/JsonPath/Text Column Index/XPath of the source schema.

    Type

    The data type of the column. Can be a Text, Numeric, or Time.

    Date Format

    The format when the data type is Time.

    Filter

    Defined parameters that can be used as filter.

    Enabled

    Determines whether the message field should be processed.

     

    NOTE: To parse and format times with higher than millisecond precision, the format string needs to end with a period followed by sequence of upper case S. There can be no additional characters following them.

    For example: yyyy-MM-dd HH:mm:ss.SSSSSS

    To delete a column, check its  or all the column entries, check the topmost , then click .

  10. Define the Real-time Settings.
  11. Click  . The new data source is added in the Data Sources list.

 


 

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