Switch to CircleCI

Closes #107

Author: nhooyr

.circleci/config.yml

@@ -0,0 +1,64 @@
+version: 2
+jobs:
+  fmt:
+    docker:
+      - image: golang:1
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - go-{{ checksum "go.sum" }}
+            # Fallback to using the latest cache if no exact match is found.
+            - go-
+      - run: ./ci/fmt.sh
+      - save_cache:
+          paths:
+            - /go
+            - ~/.cache/go-build
+          key: go-{{ checksum "go.sum" }}
+
+  lint:
+    docker:
+      - image: golang:1
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - go-{{ checksum "go.sum" }}
+            # Fallback to using the latest cache if no exact match is found.
+            - go-
+      - run: ./ci/lint.sh
+      - save_cache:
+          paths:
+            - /go
+            - ~/.cache/go-build
+          key: go-{{ checksum "go.sum" }}
+
+  test:
+    docker:
+      - image: golang:1
+    steps:
+      - checkout
+      - restore_cache:
+          keys:
+            - go-{{ checksum "go.sum" }}
+            # Fallback to using the latest cache if no exact match is found.
+            - go-
+      - run: ./ci/test.sh
+      - save_cache:
+          paths:
+            - /go
+            - ~/.cache/go-build
+          key: go-{{ checksum "go.sum" }}
+
+workflows:
+  version: 2
+  fmt:
+    jobs:
+      - fmt
+  lint:
+    jobs:
+      - lint
+  test:
+    jobs:
+      - test

.github/main.workflow

@@ -1,3 +1,4 @@
+comment: off
 coverage:
   status:
     # Prevent small changes in coverage from failing CI.

ci/.codecov.yml

@@ -1,15 +1,16 @@
 #!/usr/bin/env bash
 
-source ci/lib.sh || exit 1
+set -euo pipefail
+cd "$(dirname "${0}")"
+source ./lib.sh
 
 go test --vet=off --run=^$ -bench=. -o=ci/out/websocket.test \
-	-cpuprofile=ci/out/cpu.prof \
-	-memprofile=ci/out/mem.prof \
-	-blockprofile=ci/out/block.prof \
-	-mutexprofile=ci/out/mutex.prof \
-	.
+  -cpuprofile=ci/out/cpu.prof \
+  -memprofile=ci/out/mem.prof \
+  -blockprofile=ci/out/block.prof \
+  -mutexprofile=ci/out/mutex.prof \
+  .
 
-set +x
 echo
 echo "profiles are in ./ci/out/*.prof
 keep in mind that every profiler Go provides is enabled so that may skew the benchmarks"

ci/bench/entrypoint.sh renamed to ci/bench.sh

@@ -0,0 +1,37 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+cd "$(dirname "${0}")"
+source ./lib.sh
+
+unstaged_files() {
+  git ls-files --other --modified --exclude-standard
+}
+
+gen() {
+  # Unfortunately, this is the only way to ensure go.mod and go.sum are correct.
+  # See https://github.com/golang/go/issues/27005
+  go list ./... > /dev/null
+  go mod tidy
+
+  go generate ./...
+}
+
+fmt() {
+  gofmt -w -s .
+  go run go.coder.com/go-tools/cmd/goimports -w "-local=$(go list -m)" .
+  go run mvdan.cc/sh/cmd/shfmt -i 2 -w -s -sr .
+}
+
+gen
+fmt
+
+if [[ $CI && $(unstaged_files) != "" ]]; then
+  echo
+  echo "files either need generation or are formatted incorrectly"
+  echo "please run:"
+  echo "./ci/fmt.sh"
+  echo
+  git status
+  exit 1
+fi

ci/bench/Dockerfile

@@ -1,14 +1,12 @@
 #!/usr/bin/env bash
 
-set -euxo pipefail || exit 1
-
-export GO111MODULE=on
-export PAGER=cat
-
-# shellcheck disable=SC2034
-# CI is used by the scripts that source this file.
-export CI=${GITHUB_ACTION-}
+set -euo pipefail
 
+# Ensures $CI can be used if it's set or not.
+export CI=${CI:-}
 if [[ $CI ]]; then
-	export GOFLAGS=-mod=readonly
+  export GOFLAGS=-mod=readonly
+  export DEBIAN_FRONTEND=noninteractive
 fi
+
+cd "$(git rev-parse --show-toplevel)"

ci/fmt.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+set -euo pipefail
+cd "$(dirname "${0}")"
+source ./lib.sh
+
+if [[ $CI ]]; then
+  apt-get update -qq
+  apt-get install -qq shellcheck
+fi
+
+# shellcheck disable=SC2046
+shellcheck -e SC1091 -x $(git ls-files "*.sh")
+go vet ./...
+go run golang.org/x/lint/golint -set_exit_status ./...