How do you use this repository to test?

[janitha09]

I tried this
~/gh/proxy-wasm/proxy-wasm-rust-sdk$ bazel build //examples:hello_world

the output looks like this

WARNING: Download from https://github.com/bazelbuild/bazel-skylib/releases/download/1.0.3/bazel-skylib-1.0.3.tar.gz failed: class javax.net.ssl.SSLHandshakeException PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
INFO: Analyzed target //examples:hello_world (0 packages loaded, 0 targets configured).
INFO: Found 1 target...
Target //examples:hello_world up-to-date:
  bazel-bin/examples/hello_world.wasm

Then in the test-framework project I did this

cargo run --example hello_world
    Finished dev [unoptimized + debuginfo] target(s) in 0.05s
     Running `target/debug/examples/hello_world`
error: The following required arguments were not provided:
    <wasm-path>

USAGE:
    hello_world [FLAGS] <wasm-path>

For more information try --help

following that I tried this

cargo run --example hello_world ~/gh/proxy-wasm/proxy-wasm-rust-sdk/bazel-bin/examples/hello_world.wasm

The output looks like this

    Finished dev [unoptimized + debuginfo] target(s) in 0.07s
     Running `target/debug/examples/hello_world /home/janitha/gh/proxy-wasm/proxy-wasm-rust-sdk/bazel-bin/examples/hello_world.wasm`
thread 'main' panicked at 'Error: test-framework does not support proxy-wasm modules of this abi version', src/hostcalls.rs:47:9
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

Why is this saying the abi version is unsupported?

The backtrace implies that I am calling improperly i.e. the wasm is not loaded

RUST_BACKTRACE=1 cargo run --example hello_world /home/janitha/gh/proxy-wasm/proxy-wasm-rust-sdk/bazel-bin/examples/hello_world.wasm
    Finished dev [unoptimized + debuginfo] target(s) in 0.07s
     Running `target/debug/examples/hello_world /home/janitha/gh/proxy-wasm/proxy-wasm-rust-sdk/bazel-bin/examples/hello_world.wasm`
thread 'main' panicked at 'Error: test-framework does not support proxy-wasm modules of this abi version', src/hostcalls.rs:47:9
stack backtrace:
   0: std::panicking::begin_panic
             at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/std/src/panicking.rs:541:12
   1: proxy_wasm_test_framework::hostcalls::get_abi_version
             at ./src/hostcalls.rs:47:9
   2: proxy_wasm_test_framework::tester::mock
             at ./src/tester.rs:47:23
   3: hello_world::main
             at ./examples/hello_world.rs:24:32
   4: core::ops::function::FnOnce::call_once
             at /rustc/a178d0322ce20e33eac124758e837cbd80a6f633/library/core/src/ops/function.rs:227:5

What is the correct way to call it?

[PiotrSikora]

This framework currently implements only Proxy-Wasm ABI v0.1.0, wheras all existing SDKs implement Proxy-Wasm ABI v0.2.x.

You might try using it with Proxy-Wasm Rust SDK v0.1.4 (latest release, still using Proxy-Wasm ABI v0.1.0) instead of the master branch, but I'm not sure if that still works, since the test framework is currently unmaintained (although, I hope to revive it later this year).

[janitha09]

Thanks for the info. I saw this issue #2 but ignored it when I saw the if else statements.

Have you guys looked at what kubebuilder does in terms of setting up a ready to go project. https://github.com/kubernetes-sigs/kubebuilder. I have spun up a few operators using this and the scaffolding and annotation driven approach makes it fast to write, test and get into production.

I would like to help. I suck at writing code that I cannot test in a lazy way.

I haven't quite understood why rust's #[cfg(test)] is not being used/extended here. I noticed a stack dump when trying to run a test linked to #[no_mangle] that I do not know how to work around

#[cfg(test)]
mod tests {
    #[test]
    fn it_works() {
        assert_eq!(2 + 2, 4);
    }
}

$ cargo test
   Compiling primes v0.3.0
   Compiling http-metrics-envoy-filter v0.1.0 (/workspaces/http-metrics-envoy-filter)
warning: unused imports: `debug`, `trace`
 --> src/lib.rs:7:11
  |
7 | use log::{debug, info, trace, error};
  |           ^^^^^        ^^^^^
  |
  = note: `#[warn(unused_imports)]` on by default

error: linking with `cc` failed: exit status: 1
  |
  = note: "cc" "-m64" "-Wl,--eh-frame-hdr" "-Wl,-znoexecstack" "-Wl,--as-needed" "-L" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.0.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.1.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.10.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.11.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.12.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.13.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.14.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.15.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.2.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.3.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.4.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.5.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.6.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.7.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.8.rcgu.o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.9.rcgu.o" "-o" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e" "/workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.2x6qarlzyhsa8gko.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/workspaces/http-metrics-envoy-filter/target/debug/deps" "-L" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-f9857d82e715db01.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libterm-ec0a0bca4ec735a2.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-a9c0ac60f102f521.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-a44cb01dee9bd0b4.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_std-baabb9a435cbac5d.rlib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/libproxy_wasm-ca465ac593f2d890.rlib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/libhashbrown-b5ac0d000610a0b1.rlib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/libahash-99000129f9a79579.rlib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/libgetrandom-0138c7a56a442680.rlib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/liblibc-1157e3ec59adeda6.rlib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/libonce_cell-c351a2101b09b51f.rlib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/libprimes-ae53e8da43b24afd.rlib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/liblog-bda932c7a9968e0a.rlib" "/workspaces/http-metrics-envoy-filter/target/debug/deps/libcfg_if-0a6225dcb261749c.rlib" "-Wl,--start-group" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-b6b48477bfa8c673.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-f560ec02638f7ffe.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-9c8eadb7013c9e0b.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-8b0ec8dbdb85d0bf.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-ba5d5ee707c805d2.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-55166126dbdd5e46.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c327b365eae3b2f3.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-416439b546a0d033.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-2581188d29552e15.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-da7b2635bfcce6ef.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-09200ed1945e7b2b.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-223ac369b29f5000.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-39562fe6600dd936.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-9b411bb7a19f81b3.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-64ea0581d80339f7.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-b2dbda88b377d685.rlib" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-2a8415a96ed1d7dc.rlib" "-Wl,--end-group" "/usr/local/rustup/toolchains/1.53.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-c4d9a5b072ee3191.rlib" "-Wl,-Bdynamic" "-lc" "-lm" "-lrt" "-lpthread" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
  = note: /usr/bin/ld: /workspaces/http-metrics-envoy-filter/target/debug/deps/http_metrics_envoy_filter-2281d3848d86e56e.http_metrics_envoy_filter.ao6p4y8c-cgu.0.rcgu.o: in function `_start':
          /workspaces/http-metrics-envoy-filter/src/lib.rs:13: multiple definition of `_start'; /usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/Scrt1.o:(.text+0x0): first defined here
          collect2: error: ld returned 1 exit status
          

error: aborting due to previous error; 1 warning emitted

error: could not compile `http-metrics-envoy-filter`

To learn more, run the command again with --verbose.

[alexhu20]

@janitha09 Have you resolved this issue yet? I don't see the test framework being pulished, do we have to pull this repo locally and build with our implementation together?