This is an example of how to build and deploy WASM filter on envoy locally. Before executing the commands to build and deploy the filter, make sure that bazel is installed and envoy has been built locally.

Build the filter with the following command:

bazel build //:filter.wasm

(The general format of bazel build command is bazel build //<path_to_BUILD_file>:<name_of_the_binary_to_build>, where // is the path to the WORKSPACE file).

After the build completes, filter will be in:

./bazel-bin/filter.wasm

build descriptors with:

bazel build :filter_proto

Descriptors will be in:

./bazel-bin/filter_proto-descriptor-set.proto.bin

Note: on a mac, please run

xcode-select --install

and Potentially:

brew install python@2

as the python bundled with catalina may have issues with ssl certs.