Add initial k6/x/execution module

.github/workflows/test.yml

@@ -0,0 +1,54 @@
+name: Test
+on:
+  # Enable manually triggering this workflow via the API or web UI
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+    tags:
+      - v*
+  pull_request:
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    env:
+        GOLANG_CI_VERSION: "1.41.1"
+        GO111MODULE: 'on'
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16.x
+      - name: Install golangci-lint
+        working-directory: /tmp
+        run: go install "github.com/golangci/golangci-lint/cmd/golangci-lint@v$GOLANG_CI_VERSION"
+      - name: Run linters
+        run: |
+          golangci-lint run --out-format=tab ./...
+
+  test:
+    strategy:
+      fail-fast: false
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16.x
+      - name: Run tests
+        run: |
+          set -x
+          go version
+          export GOMAXPROCS=2
+          go test -p 2 -race -timeout 60s ./...

.github/workflows/xk6-test.js

@@ -0,0 +1,39 @@
+import { sleep } from 'k6';
+import exec from 'k6/x/execution';
+
+export let options = {
+  scenarios: {
+    shared: {
+      executor: 'shared-iterations',
+      vus: 50,
+      iterations: 500,
+    },
+    rar: {
+      executor: 'ramping-arrival-rate',
+      startTime: '10s',
+      startRate: 20,
+      timeUnit: '1s',
+      preAllocatedVUs: 0,
+      maxVUs: 40,
+      stages: [
+        { target: 50, duration: '5s' },
+        { target: 0, duration: '5s' },
+      ],
+      gracefulStop: '0s',
+    },
+  }
+}
+
+function logObj(msg, o) {
+  console.log(msg, JSON.stringify(o, Object.keys(o).sort()));
+}
+
+export default function () {
+  const vuStats = exec.getVUStats();
+  const scStats = exec.getScenarioStats();
+  const testStats = exec.getTestInstanceStats();
+  sleep(1);
+  logObj('VU stats:', vuStats);
+  logObj('Scenario stats:', scStats);
+  logObj('Test stats:', testStats);
+}

.github/workflows/xk6.yml

@@ -0,0 +1,48 @@
+name: xk6
+on:
+  # Enable manually triggering this workflow via the API or web UI
+  workflow_dispatch:
+  push:
+    branches:
+      - master
+  pull_request:
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  test-xk6:
+    strategy:
+      matrix:
+        go: [stable, tip]
+        platform: [ubuntu-latest, windows-latest, macos-latest]
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.16.x
+      - name: Install Go tip
+        if: matrix.go == 'tip'
+        run: |
+          go install golang.org/dl/gotip@latest
+          gotip download
+          echo "GOROOT=$HOME/sdk/gotip" >> "$GITHUB_ENV"
+          echo "GOPATH=$HOME/go" >> "$GITHUB_ENV"
+          echo "$HOME/go/bin" >> "$GITHUB_PATH"
+          echo "$HOME/sdk/gotip/bin" >> "$GITHUB_PATH"
+      - name: Run tests
+        run: |
+          set -x
+          which go
+          go version
+
+          go install go.k6.io/xk6/cmd/xk6@master
+          GOPROXY="direct" xk6 build master \
+            --output ./k6ext \
+            --with github.com/k6io/xk6-execution="$(pwd)"
+          ./k6ext version
+          ./k6ext run --quiet --verbose .github/workflows/xk6-test.js

README.md

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+# xk6-execution
+
+A [k6](https://github.com/grafana/k6) JavaScript extension using the
+[xk6](https://github.com/grafana/xk6) system that returns information about a
+test run including VU, scenario and test statistics.
+
+| :exclamation: This project is in active development and may break in the future.<br>Please report issues and contribute improvements to help. |
+|------|
+
+
+## Build
+
+To build a `k6` binary with this extension, first ensure you have installed the prerequisites:
+
+- [Go toolchain](https://go101.org/article/go-toolchain.html)
+- Git
+
+Then:
+
+1. Install `xk6`:
+  ```shell
+  go install go.k6.io/xk6/cmd/xk6@latest
+  ```
+
+2. Build the binary:
+  ```shell
+  xk6 build master \
+    --with github.com/grafana/xk6-execution
+  ```
+
+
+## Example
+
+```javascript
+import { sleep } from 'k6';
+import exec from 'k6/x/execution';
+
+export let options = {
+  scenarios: {
+    shared: {
+      executor: 'shared-iterations',
+      vus: 50,
+      iterations: 500,
+    }
+  }
+}
+
+function logObj(msg, o) {
+  console.log(msg, JSON.stringify(o, Object.keys(o).sort()));
+}
+
+export default function () {
+  const vuStats = exec.getVUStats();
+  const scStats = exec.getScenarioStats();
+  const testStats = exec.getTestInstanceStats();
+  sleep(1);
+  logObj('VU stats:', vuStats);
+  logObj('Scenario stats:', scStats);
+  logObj('Test stats:', testStats);
+}
+```
+
+Sample output:
+
+```shell
+INFO[0009] VU stats: {"id":36,"idGlobal":36,"iteration":8,"iterationScenario":8}  source=console
+INFO[0009] Scenario stats: {"executor":"shared-iterations","iteration":429,"iterationGlobal":429,"name":"shared","progress":0.858,"startTime":1624262301.1202478}  source=console
+INFO[0009] Test stats: {"duration":9035.161124,"iterationsCompleted":429,"iterationsInterrupted":0,"vusActive":50,"vusMax":50}  source=console
+```
+
+
+TODO:
+- [ ] Document all fields

go.mod

@@ -0,0 +1,12 @@
+module github.com/k6io/xk6-execution
+
+go 1.16
+
+require (
+	github.com/dop251/goja v0.0.0-20210817151038-07a7fd9355b4
+	github.com/sirupsen/logrus v1.8.1
+	github.com/spf13/afero v1.1.2
+	github.com/stretchr/testify v1.7.0
+	go.k6.io/k6 v0.33.1-0.20210825161650-c932a28ff940
+	gopkg.in/guregu/null.v3 v3.3.0
+)