Streaming Data Sources

Connector for ActiveMQ

Allows connection to Apache’s ActiveMQ message bus on a real-time streaming basis. Specifically, the connector allows Panopticon 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. 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

    Accepts topic in topic://topicname.* format and topicname.*. Therefore, topic://pano.> and pano.> both will work as topic value.

    Default is topic://topicname.*

     

  2. Select/unselect the Use durable subscription.

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

  3. Select/unselect Messages can contain partial data.
  4. Select the Message Type.
  5. 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. 

    This also populates the Id Column with the set of columns, of arbitrary type, that can be concatenated to form a unique row identifier.

  6. You can also opt to load or save a copy of the column definition.
  7. 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.

    Enabled

    Determines whether the message field should be processed.

    Filter

    Defined parameters that can be used as filter. Only available for JSON, Text, and XML message types.

    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, select  or for all the column entries select the topmost , then click .

  8. Date/Time values of output data and Date/Time inputs, where supported, is by default unchanged.

    You can opt to define the Show in Timezone and Source Timezone settings.

  9. For this section:

    Refer to Define Real-Time Settings for more information.

 

 

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