mirror of
https://github.com/datahub-project/datahub.git
synced 2025-11-03 20:27:50 +00:00
23 lines
822 B
Markdown
23 lines
822 B
Markdown
|
# Wherehows Data Model
|
||
|
|
The module contains the data model used by WhereHows, including the table DDLs for MySQL DB, Elastic search indices,
|
||
|
|
and avro schemas for Kafka events. It also includes the auto generated Kafka event java classes, to be used by other modules.
|
||
|
|
|
||
|
|
## Code Generation for Avro Schema
|
||
|
|
The java code here under src/main/java are auto generated by Avro-tool from avro schema (.avsc) of Kafka events.
|
||
|
|
They should not be edited directly.
|
||
|
|
|
||
|
|
Note that we currently require avro version 1.4 in Kafka related tasks.
|
||
|
|
|
||
|
|
To generate java code, first download avro-tool-1.4.1, then use command line from wherehows-data-model/:
|
||
|
|
```
|
||
|
|
java -jar avro-tools-1.4.1.jar compile schema xxx.avsc src/main/java
|
||
|
|
```
|
||
|
|
|
||
|
|
|
||
|
|
## Build
|
||
|
|
```
|
||
|
|
$ ../gradlew build
|
||
|
|
|
||
|
|
BUILD SUCCESSFUL in 0s
|
||
|
|
4 actionable tasks: 2 executed, 2 up-to-date
|
||
|
|
```
|