Cobol to Avro Converter accepts the Cobol Copybook and converts it into the Avro schema. Generated Avro schema is used to convert the records in the Cobol data file into Apache Avro format.
The plugin accepts a Cobol Copybook as a configuration to generate an Avro schema and use that schema to convert records into Avro format. Code in the Copybook can be pasted in the "Copybook" property. Avro schema corresponding to the Copybook can be retrieved using the "Get Schema" button. "Code Format" property is used to specify the code format in the Copybook, which can either be FIXED_FORMAT or FREE_FORMAT. Charset used to read the data can be specified using "Charset" property, which defaults to "IBM01140". Cobol data file can contain variable-length logical records, in which case record consists of a record descriptor word (RDW) followed by the data. Plugin can be configured to use with variable-length records by setting property "Records start with Record Descriptor Word" to true.
Cobol to Avro Converter is usually used with the WholeFileReader source plugin. WholeFileReader reads the entire data file and pass it to the converter as an array of bytes. Name of the field containing Cobol records as an array of bytes can be configured.
| Configuration | Required | Default | Description |
|---|---|---|---|
| Copybook | Y | N/A | Specifies the Cobol Copybook for which Avro schema need to be generated. |
| Code Format | N | FIXED_FORMAT | Specifies the format of the Copybook source code. |
| Charset | N | IBM01140 | Specifies the EBCDIC charset used to read the data. |
| Record Descriptor Word | N | True | Specifies whether the data file contains the variable-length records. |
To build this plugin:
mvn clean package
The build will create a .jar and .json file under the target directory.
These files can be used to deploy your plugins.
You can deploy your plugins using the CDAP CLI:
> load artifact <target/cobol-to-avro-transform-<version>.jar config-file <target/cobol-to-avro-transform-<version>.json>
CDAP User Group and Development Discussions:
cdap-user@googlegroups.com <https://groups.google.com/d/forum/cdap-user>
The cdap-user mailing list is primarily for users using the product to develop applications or building plugins for appplications. You can expect questions from users, release announcements, and any other discussions that we think will be helpful to the users.
CDAP Slack Channel: http://cdap-users.herokuapp.com/
Copyright © 2017-2019 Cask Data, Inc.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
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