add docker test framework for k8s

.github/workflows/docker.yml

@@ -12,4 +12,12 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: build local queue example
-        run: docker build -f examples/local_queue_example/Dockerfile .
+        run: docker build -f examples/local_queue_example/Dockerfile .
+  kubernetes_example:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: build k8s example
+        run: docker build -f examples/kubernetes_example/Dockerfile -t kub .
+      - name: run k8s example
+        run: docker run -v /var/run/docker.sock:/var/run/docker.sock kub

.gitignore

@@ -1,4 +1,5 @@
 /target
 target/
 Cargo.lock
-.turbolift/
+.turbolift/
+.idea

examples/kubernetes_example/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "kubernetes_example"
+version = "0.1.0"
+authors = ["Dominic Burkart <[email protected]>"]
+edition = "2018"
+
+[features]
+"distributed" = ["turbolift/distributed"]
+
+[dependencies]
+turbolift = { path="../../" }

examples/kubernetes_example/Dockerfile

@@ -0,0 +1,13 @@
+# docker build -f examples/kubernetes_example/Dockerfile -t kub .
+# docker run -v /var/run/docker.sock:/var/run/docker.sock kub
+
+# set up kind (k8s in docker)
+FROM rustlang/rust:nightly
+RUN  apt-get update \
+  && apt-get install -y wget \
+  && apt-get install -y docker.io \
+  && rm -rf /var/lib/apt/lists/*
+RUN wget -O ./kind --show-progress "https://kind.sigs.k8s.io/dl/v0.9.0/kind-$(uname)-amd64"
+RUN chmod +x ./kind
+COPY ./ ./
+CMD sh examples/kubernetes_example/example_runtime.sh

examples/kubernetes_example/example_runtime.sh

@@ -0,0 +1,15 @@
+# error if any command fails
+set -e
+
+# setup cluster (will be used in all tests & runs)
+./kind create cluster
+
+cd examples/kubernetes_example
+
+# test
+RUSTFLAGS='--cfg procmacro2_semver_exempt' cargo +nightly test
+RUSTFLAGS='--cfg procmacro2_semver_exempt' cargo +nightly test --features "distributed"
+
+# run
+RUSTFLAGS='--cfg procmacro2_semver_exempt' cargo +nightly run
+RUSTFLAGS='--cfg procmacro2_semver_exempt' cargo +nightly run --features "distributed"

examples/kubernetes_example/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}

turbolift_internals/src/kubernetes.rs

@@ -12,8 +12,6 @@ use crate::distributed_platform::{
 const K8S_NAMESPACE: &str = "turbolift";
 type ImageTag = String;
 
-// pub type K8sConfig = kube::config::Config; todo
-
 pub struct K8s {
     pods: Vec<Pod>,
 }