Towards17 (#438)

• Interim commit

• Remove flattened POMs

• Fix TestRegexExtractorInterceptor*

While #431 migrated RegexExtractorInterceptorMillisSerializer correctly from Joda to Java time, it introduced a small bug in the tests, which assume that all dates are in UTC.

The original extractor interpreted them instead in the local timezone.

• Fix TestRegexExtractorInterceptor*

While #431 migrated RegexExtractorInterceptorMillisSerializer correctly from Joda to Java time, it introduced a small bug in the tests, which assume that all dates are in UTC.

The original extractor interpreted them instead in the local timezone.

• Fix: allow arbitrary precision in RFC 5424 timestamps

Modifies the regex in SyslogUtils to allow up to 9 digits of precision in timestamps.

This level of precision does not exist on Java 8, but since Java 9 nanosecond precision is available at least on Linux.

• Fix: replace Mockito mock with DummySession

With the old Mockito TestMultiportSyslogTCPSource worked, because Mockito was unable to mock final methods and the real methods were called.

Now Mockito inline is able to mock final methods and operations essential for the test fail.

• Fix: allow 199 Spotbugs violations in flume-ng-core

• Fix: allow more Spotbugs failures

• Fix: remove unused EnvironmentVariables

• Fix order-dependent resolution of cross-referencing properties

When properties are defined in terms of each other, e.g. a = ${b} with b = OK, MapResolver#resolveProperties filled the result map while using that same map as the lookup source, so a reference only resolved when the referenced property had already been evaluated. As the iteration order of Properties#stringPropertyNames is unspecified, properties like a were sometimes left unresolved.

Pre-seed the map with the raw values so that every key is visible to the lookup regardless of evaluation order.

TestMapResolver covers both reference orderings, and documents that self-referencing and cyclic definitions are left to Commons Text’s recursion guard, which either returns the literal or throws IllegalStateException.

• fix: more Spotbugs errors for flume-node

• Get File Channel, Avro and Thrift to build

• Build completes

• Flume RPC moved to its own repo

• apply change to branch

• Update workflow to Java 17

• Move embedded agent to Flume RPC