Envoy NATS Streaming filter

This project links a NATS Streaming HTTP filter with the Envoy binary. A new filter io.solo.nats_streaming which redirects requests to NATS Streaming is introduced.

Building

To build the Envoy static binary:

$ bazel build //:envoy

Testing

To run the all tests:

$ bazel test //test/...

To run the all tests in debug mode:

$ bazel test //test/... -c dbg

To run integration tests using a clang build:

$ CXX=clang++-5.0 CC=clang-5.0 bazel test -c dbg --config=clang-tsan //test/integration:nats_streaming_filter_integration_test

E2E

The e2e tests depend on nats-streaming-server and stan-sub, which need to be in your path. They also require the GRequests Python package.

To install GRequests:

$ pip install grequests

To run the e2e test:

$ bazel test //e2e/...

Profiling

To run a profiler, first install the perf tool. In ubuntu run these command (a reboot may be needed):

$ sudo apt install linux-tools-generic linux-tools-common

Then:

$ cd e2e
$ ulimit -n 2048
$ DEBUG=0 TEST_ENVOY_BIN=../bazel-bin/envoy TEST_PROF_REPORT=report.data  python e2e_test.py 2> output.txt

To read the report, run:

$ perf report