1.4.0

• Full support for Logstash 5 and later. By default the version used with LFV is auto-detected (in order to adapt the LFV behavior) but this can be overridden with --logstash-version.
• --logstash-path no longer sets the singular Logstash path but rather adds an extra entry to the list of locations that are checked for a Logstash installation.
• When using --sockets a magic [@metadata][__lfv_testcase] field was added, but it would clobber any existing @metadata fields. This field is now appended to any existing @metadata fields.

1.3.0

• The --sockets option is incompatible with a couple of input codecs that happen to work if you don't use that option. Warn the use about this.
• Addition of a --logstash-arg option that allows the user to pass additional arguments to all started Logstash processes.
• The PATH environment variable is by default passed on to started Logstash processes. This fixes a bug where Logstash under some circumstances isn't able to find the JVM.

1.2.1

• Addition of --sockets-timeout option to control how long to wait for Logstash to start up and become ready to process events when using the --sockets option.
• Status and progress messages are now written to stdout instead of stderr.
• Addition of a description field for test cases that e.g. can be used as a short piece of documentation.

1.2.0

• Logstash 5.2 compatibility. Issues still exist with Logstash 5.0 and possibly 5.1.
• Addition of --sockets option that causes the program to use Unix domain sockets to pass inputs to Logstash, enabling a single Logstash process to be used for multiple test case files which has the potential to dramatically shorten the execution time.
• Go 1.8 is now required for compiling.
• Support for a new test case file format where pairs of input and expected output lines are store together. For now both formats work.
• Addition of --logstash-output option that causes the Logstash output to be emitted.
• JSON parse errors for test case files are reported with line and column details to make it easier to find the problem.
• The makefile now supports a GOPATH variable with multiple paths.
• When adding fields to input events with the fields option, nested fields may now be objects.
• Large floating point numbers are now formatted in a way that's acceptable to Logstash.
• Minor improvements in the messages given when running the program.

1.1.1

Multiple filter configuration files now work. Previously only one of the files would be picked up by Logstash, possibly resulting in incorrect test results.

When invoking with --help to get command-line help, the exit code is now zero.

1.1.0

Adds the --keep-env option to keep select environment variables when invoking Logstash. This is useful to propagate JAVA_HOME and any other variables needed by Logstash.

If the Logstash child process terminates with a non-zero exit code, show the stdout/stderr output from the command rather than solely relying on the log output. If Logstash fails very early, e.g. before the JVM starts up, there won't be a logfile.

1.0.1

Fixes Logstash 2.2.0 incompatibility problem.

Also, if the Logstash child process terminates with a non-zero exit code, the contents of Logstash's log file is now included in the error message.

1.0.0

Initial release.