initial makefile (#7)

* adds initial makefile

Signed-off-by: Mike Brown <brownwm@us.ibm.com>

* clean up lint

Signed-off-by: Mike Brown <brownwm@us.ibm.com>

* presume path is set to contain gomealinter

Signed-off-by: Mike Brown <brownwm@us.ibm.com>

* addresses requested improvements

Signed-off-by: Mike Brown <brownwm@us.ibm.com>

.gitignore

@@ -0,0 +1 @@
+_output/*

Makefile

@@ -0,0 +1,81 @@
+GO ?= go
+EPOCH_TEST_COMMIT ?= f2925f58acc259c4b894353f5fc404bdeb40028e
+PROJECT := github.com/kubernetes-incubator/cri-containerd
+BINDIR ?= ${DESTDIR}/usr/local/bin
+BUILD_DIR ?= _output
+
+all: binaries
+
+default: help
+
+help:
+	@echo "Usage: make <target>"
+	@echo
+	@echo " * 'install'       - Install binaries to system locations"
+	@echo " * 'binaries'      - Build cri-containerd"
+	@echo " * 'clean'         - Clean artifacts"
+	@echo " * 'verify'        - Execute the source code verification tools"
+	@echo " * 'install.tools' - Installs tools used by verify"
+	@echo " * 'uninstall'     - Remove installed binaries from system locations"
+
+.PHONY: check-gopath
+
+check-gopath:
+ifndef GOPATH
+	$(error GOPATH is not set)
+endif
+
+verify: lint gofmt
+
+lint: check-gopath
+	@echo "checking lint"
+	@./hack/lint.sh
+
+gofmt:
+	@echo "checking gofmt"
+	@./hack/verify-gofmt.sh
+
+cri-containerd: check-gopath
+	$(GO) build -o $(BUILD_DIR)/$@ \
+		$(PROJECT)/cmd/cri-containerd
+
+clean:
+	rm -f $(BUILD_DIR)/cri-containerd
+
+binaries: cri-containerd
+
+install: check-gopath
+	install -D -m 755 $(BUILD_DIR)/cri-containerd $(BINDIR)/cri-containerd
+
+uninstall:
+	rm -f $(BINDIR)/cri-containerd
+
+.PHONY: .gitvalidation
+# When this is running in travis, it will only check the travis commit range
+.gitvalidation: check-gopath
+ifeq ($(TRAVIS),true)
+	git-validation -q -run DCO,short-subject
+else
+	git-validation -v -run DCO,short-subject -range $(EPOCH_TEST_COMMIT)..HEAD
+endif
+
+.PHONY: install.tools .install.gitvalidation .install.gometalinter
+
+install.tools: .install.gitvalidation .install.gometalinter
+
+.install.gitvalidation:
+	go get -u github.com/vbatts/git-validation
+
+.install.gometalinter:
+	go get -u github.com/alecthomas/gometalinter
+	gometalinter --install
+
+.PHONY: \
+	binaries \
+	clean \
+	default \
+	gofmt \
+	help \
+	install \
+	lint \
+	uninstall

cmd/cri-containerd/options/options.go

@@ -33,6 +33,7 @@ type CRIContainerdOptions struct {
 	ContainerdConnectionTimeout time.Duration
 }
 
+// NewCRIContainerdOptions returns a reference to CRIContainerdOptions
 func NewCRIContainerdOptions() *CRIContainerdOptions {
 	return &CRIContainerdOptions{}
 }
@@ -47,6 +48,10 @@ func (c *CRIContainerdOptions) AddFlags(fs *pflag.FlagSet) {
 		2*time.Minute, "Connection timeout for containerd client.")
 }
 
+// InitFlags must be called after adding all cli options flags are defined and
+// before flags are accessed by the program. Ths fuction adds flag.CommandLine
+// (the default set of command-line flags, parsed from os.Args) and then calls
+// pflag.Parse().
 func InitFlags() {
 	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
 	pflag.Parse()

hack/lint.sh

@@ -0,0 +1,33 @@
+#!/bin/bash
+# Copyright 2017 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.#!/usr/bin/env bash
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+for d in $(find . -type d -a \( -iwholename './pkg*' -o -iwholename './cmd*' \)); do
+	echo for directory ${d} ...
+	gometalinter \
+		 --exclude='error return value not checked.*(Close|Log|Print).*\(errcheck\)$' \
+		 --exclude='.*_test\.go:.*error return value not checked.*\(errcheck\)$' \
+		 --exclude='duplicate of.*_test.go.*\(dupl\)$' \
+		 --disable=aligncheck \
+		 --disable=gotype \
+		 --disable=gas \
+		 --cyclo-over=60 \
+		 --dupl-threshold=100 \
+		 --tests \
+		 --deadline=30s "${d}"
+done

hack/verify-gofmt.sh

@@ -0,0 +1,34 @@
+#!/bin/bash
+# Copyright 2017 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+find_files() {
+  find . -not \( \
+      \( \
+        -wholename '*/vendor/*' \
+      \) -prune \
+    \) -name '*.go'
+}
+
+GOFMT="gofmt -s"
+bad_files=$(find_files | xargs $GOFMT -l)
+if [[ -n "${bad_files}" ]]; then
+  echo "!!! '$GOFMT' needs to be run on the following files: "
+  echo "${bad_files}"
+  exit 1
+fi

pkg/server/service.go

@@ -21,6 +21,9 @@ import (
 
 	"k8s.io/kubernetes/pkg/kubelet/api/v1alpha1/runtime"
 
+	// TODO remove the underscores from the following imports as the services are
+	// implemented. "_" is being used to hold the reference to keep autocomplete
+	// from deleting them until referenced below.
 	_ "github.com/containerd/containerd/api/services/content"
 	_ "github.com/containerd/containerd/api/services/execution"
 	_ "github.com/containerd/containerd/api/services/images"
@@ -41,6 +44,7 @@ type CRIContainerdService interface {
 // criContainerdService implements CRIContainerdService.
 type criContainerdService struct{}
 
+// NewCRIContainerdService returns a new instance of CRIContainerdService
 func NewCRIContainerdService(conn *grpc.ClientConn) CRIContainerdService {
 	// TODO: Initialize different containerd clients.
 	return &criContainerdService{}