Setup minimal CI (open-telemetry#17)

* Setup basic ci

* Add empty README

* Fix script path

* Fill out README.

* Typo.

* Add missing script name.

* Remove unnecessary packages

* Use fastbuild.

* Fix typo.

Co-authored-by: easy <[email protected]>

.bazelversion

@@ -0,0 +1 @@
+1.2.0

.circleci/config.yml

@@ -0,0 +1,33 @@
+version: 2.1
+
+jobs:
+  cmake_test:
+    resource_class: xlarge
+    docker:
+      - image: ubuntu:18.04
+    steps:
+      - checkout
+      - run: ./ci/setup_ci_environment.sh
+      - run: ./ci/setup_cmake.sh
+      - run: ./ci/do_ci.sh cmake.test
+      - store_artifacts:
+          path: /build/Testing/Temporary/LastTest.log
+          destination: Test.log
+
+  bazel_test:
+    resource_class: xlarge
+    docker:
+      - image: ubuntu:18.04
+    steps:
+      - checkout
+      - run: ./ci/setup_ci_environment.sh
+      - run: ./ci/install_bazelisk.sh
+      - run: ./ci/do_ci.sh bazel.test
+
+
+workflows:
+  version: 2
+  build_and_test:
+    jobs:
+      - cmake_test
+      - bazel_test

CMakeLists.txt

@@ -1,5 +1,9 @@
 cmake_minimum_required(VERSION 3.1)
 
+# See https://cmake.org/cmake/help/v3.3/policy/CMP0057.html
+# required by certain versions of gtest
+cmake_policy(SET CMP0057 NEW)
+
 project(opentelemetry-cpp)
 
 set(CMAKE_CXX_STANDARD 11)

ci/Dockerfile

@@ -0,0 +1,11 @@
+FROM ubuntu:18.04
+
+WORKDIR /setup-ci
+
+ADD setup_ci_environment.sh /setup-ci
+ADD setup_cmake.sh /setup-ci
+ADD install_bazelisk.sh /setup-ci
+
+RUN /setup-ci/setup_ci_environment.sh \
+  && /setup-ci/setup_cmake.sh \
+  && /setup-ci/install_bazelisk.sh

ci/README.md

@@ -0,0 +1,6 @@
+##  Building and running tests as a developer
+CI tests can be run on docker by invoking the script `./ci/run_docker.sh ./ci/do_ci.sh <TARGET>` where the targets are
+* `cmake.test` build cmake targets and run tests
+* `bazel.test` build bazel targets and run tests
+Additionally, `./ci/run_docker.sh` can be invoked with no arguments to get a docker shell where tests
+can be run manually.

ci/do_ci.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+
+set -e
+
+[ -z "${SRC_DIR}" ] && export SRC_DIR="`pwd`"
+[ -z "${BUILD_DIR}" ] && export BUILD_DIR=/build
+mkdir -p "${BUILD_DIR}"
+
+BAZEL_OPTIONS=""
+BAZEL_TEST_OPTIONS="$BAZEL_OPTIONS --test_output=errors"
+
+if [[ "$1" == "cmake.test" ]]; then
+  cd "${BUILD_DIR}"
+  cmake -DCMAKE_BUILD_TYPE=Debug  \
+        -DCMAKE_CXX_FLAGS="-Werror" \
+        "${SRC_DIR}"
+  make
+  make test
+  exit 0
+elif [[ "$1" == "bazel.test" ]]; then
+  bazel build $BAZEL_OPTIONS -- //...
+  bazel test $BAZEL_TEST_OPTIONS //...
+  exit 0
+else
+  echo "Invalid do_ci.sh target, see ci/README.md for valid targets."
+  exit 1
+fi

ci/install_bazelisk.sh

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+#!/bin/bash
+
+set -e
+
+BAZELISK_VERSION=v1.1.0
+
+wget -O /usr/local/bin/bazel https://github.com/bazelbuild/bazelisk/releases/download/$BAZELISK_VERSION/bazelisk-linux-amd64
+chmod +x /usr/local/bin/bazel

ci/run_docker.sh

@@ -0,0 +1,14 @@
+#!/bin/bash
+
+set -e
+
+BUILD_IMAGE=opentelemetry-cpp-build
+docker image inspect "$BUILD_IMAGE" &> /dev/null || {
+  docker build -t "$BUILD_IMAGE" ci
+}
+
+if [[ $# -ge 1 ]]; then
+  docker run -v "$PWD":/src -w /src -it "$BUILD_IMAGE" "$@"
+else
+  docker run -v "$PWD":/src -w /src --privileged -it "$BUILD_IMAGE" /bin/bash -l
+fi

ci/setup_ci_environment.sh

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+#!/bin/bash
+
+set -e
+apt-get update 
+apt-get install --no-install-recommends --no-install-suggests -y \
+                build-essential \
+                ca-certificates \
+                wget

ci/setup_cmake.sh

@@ -0,0 +1,15 @@
+#!/bin/bash
+
+set -e
+
+apt-get install --no-install-recommends --no-install-suggests -y \
+                cmake \
+                libgtest-dev
+
+# Follows these instructions for setting up gtest
+# https://www.eriksmistad.no/getting-started-with-google-test-on-ubuntu/
+pushd /usr/src/gtest
+cmake CMakeLists.txt
+make
+cp *.a /usr/lib
+popd