[FLUME-3187] Make Host Interceptor preserve hostname and IP address at the same time - ASF JIRA

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Details

Type: New Feature
Status: Patch Available
Priority: Major
Resolution: Unresolved
Affects Version/s: 1.8.0
Fix Version/s: None
Component/s: Build
Labels:
- Host
- interceptor

Description

Now Host interceptor can only insert the hostname or only IP address of the host into the event header. But in some scenarios, the hostname and IP address should be preserved at the same time.
Add a config useHostname in Host interceptor. When useIP=true and useHostname=true, the hostname and IP address will both be put into the event header. The header key of hostname and IP can also be customed. The config can be used like this:
a1.sources = r1
a1.channels = c1
a1.sources.r1.interceptors = i1
a1.sources.r1.interceptors.i1.type = host
a1.sources.r1.interceptors.i1.useIP = true
a1.sources.r1.interceptors.i1.useHostname = true
a1.sources.r1.interceptors.i1.ip = ipKey
a1.sources.r1.interceptors.i1.hostname = hostnameKey