Initial bits for livenessprobe

.travis.yml

@@ -0,0 +1,15 @@
+language: go
+
+# Needed for e2e tests
+sudo: true
+go: 1.9.x
+go_import_path: github.com/kubernetes-csi/drivers
+install:
+  - go get -u github.com/golang/dep/cmd/dep
+  - dep ensure -vendor-only
+  - make hostpath
+script:
+- go fmt $(go list ./... | grep -v vendor) | wc -l | grep 0
+- go vet $(go list ./... | grep -v vendor)
+- go test $(go list ./... | grep -v vendor)
+- ./hack/e2e-hostpath.sh

Gopkg.toml

@@ -0,0 +1,42 @@
+
+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#  name = "github.com/x/y"
+#  version = "2.4.0"
+
+
+[[constraint]]
+  name = "github.com/container-storage-interface/spec"
+  version = "0.2.0-rc1"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/golang/glog"
+
+[[constraint]]
+  name = "github.com/golang/mock"
+  version = "1.0.0"
+
+[[constraint]]
+  branch = "master"
+  name = "github.com/kubernetes-csi/csi-test"
+
+[[constraint]]
+  name = "google.golang.org/grpc"
+  version = "1.10.0"

Makefile

@@ -0,0 +1,38 @@
+# 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.
+
+.PHONY: all liveness clean test
+
+ifdef V
+TESTARGS = -v -args -alsologtostderr -v 5
+else
+TESTARGS =
+endif
+
+all: livenessprobe
+
+livenessprobe:
+	mkdir -p bin
+	CGO_ENABLED=0 GOOS=linux go build -a -ldflags '-extldflags "-static"' -o ./bin/livenessprobe ./cmd 
+
+macos-livenessprobe:
+	mkdir -p bin
+	CGO_ENABLED=0 GOOS=darwin go build -a -ldflags '-extldflags "-static"' -o ./bin/livenessprobe.osx ./cmd 
+
+clean:
+	rm -rf bin
+
+test:
+	go test `go list ./... | grep -v 'vendor'` $(TESTARGS)
+	go vet `go list ./... | grep -v vendor`

cmd/main.go

@@ -0,0 +1,87 @@
+/*
+Copyright 2018 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.
+*/
+
+package main
+
+import (
+	"context"
+	"flag"
+	"os"
+	"time"
+
+	"github.com/golang/glog"
+
+	"github.com/kubernetes-csi/livenessprobe/pkg/connection"
+)
+
+const (
+	// Default timeout of short CSI calls like GetPluginInfo
+	csiTimeout = time.Second
+)
+
+// Command line flags
+var (
+	// kubeconfig        = flag.String("kubeconfig", "", "Absolute path to the kubeconfig file. Required only when running out of cluster.")
+	connectionTimeout = flag.Duration("connection-timeout", 30*time.Second, "Timeout for waiting for CSI driver socket in seconds.")
+	csiAddress        = flag.String("csi-address", "/run/csi/socket", "Address of the CSI driver socket.")
+)
+
+func main() {
+	flag.Set("logtostderr", "true")
+	flag.Parse()
+
+	// Connect to CSI.
+	glog.V(1).Infof("Attempting to open a gRPC connection with: %q", csiAddress)
+	csiConn, err := connection.NewConnection(*csiAddress, *connectionTimeout)
+	if err != nil {
+		glog.Error(err.Error())
+		os.Exit(1)
+	}
+
+	// Get CSI driver name.
+	glog.V(1).Infof("Calling CSI driver to discover driver name.")
+	ctx, cancel := context.WithTimeout(context.Background(), csiTimeout)
+	defer cancel()
+	csiDriverName, err := csiConn.GetDriverName(ctx)
+	if err != nil {
+		glog.Error(err.Error())
+		os.Exit(1)
+	}
+	glog.V(2).Infof("CSI driver name: %q", csiDriverName)
+
+	// Get CSI Driver Node ID
+	glog.V(1).Infof("Calling CSI driver to discover node ID.")
+	ctx, cancel = context.WithTimeout(context.Background(), csiTimeout)
+	defer cancel()
+	csiDriverNodeID, err := csiConn.NodeGetId(ctx)
+	if err != nil {
+		glog.Error(err.Error())
+		os.Exit(1)
+	}
+	glog.V(2).Infof("CSI driver node ID: %q", csiDriverNodeID)
+
+	// Sending Probe request
+	glog.V(1).Infof("Sending probe request to CSI driver.")
+	ctx, cancel = context.WithTimeout(context.Background(), csiTimeout)
+	defer cancel()
+	err = csiConn.LivenessProbe(ctx)
+	if err != nil {
+		glog.Error(err.Error())
+		os.Exit(1)
+	}
+	// Liveness Probe was sucessfuly
+	os.Exit(0)
+}