Jeremy Karlson created FLUME-2256:
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Summary: Generic JDBC Sink
Key: FLUME-2256
URL: https://issues.apache.org/jira/browse/FLUME-2256
Project: Flume
Issue Type: New Feature
Reporter: Jeremy Karlson
Assignee: Jeremy Karlson
I've been working on a generic JDBC sink. It needs a bit more testing, but I
think it's ready for review and feedback. I have not yet updated the Flume
documentation, but I can / will if people are happy with this.
Since the config file is how you’d interact with it, here’s a working example
from my source tree:
a.sinks.k.type=jdbc
a.sinks.k.channel=c
a.sinks.k.driver=com.mysql.jdbc.Driver
a.sinks.k.url=jdbc:mysql://localhost:8889/flume
a.sinks.k.user=username
a.sinks.k.password=password
a.sinks.k.batchSize=100
a.sinks.k.sql=insert into twitter (body, timestamp) values (${body:string},
${header.timestamp:long})
The interesting part is the SQL statement. You can put anything you want in
there - it will get converted to a prepared statement on execution. The
Ant-ish tokens get parsed and replaced with parameters at startup.
The tokens are three part. For example, in:
${body:string(UTF-8)}
The first is a place in the event to get the value from (“body”, “header.foo”,
or “custom”). The second part ("string") is a type identifier that converts
into an appropriate JDBC parameter. The third part (“UTF-8") is a
configuration string for that type, if needed. As for types, so far I’ve
defined:
body: string (with optional charset encoding), bytearray
header: string, long, int, float, double, date (with mandatory date format and
optional timezone)
Additionally, if none of those make you happy you can define you own parameter
converters:
${custom:com.company.foo.MyConverter(optionaltextconfig)}
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