Add image for sample-device-plugin

test/images/BUILD

@@ -31,6 +31,7 @@ filegroup(
         "//test/images/porter:all-srcs",
         "//test/images/resource-consumer:all-srcs",
         "//test/images/sample-apiserver:all-srcs",
+        "//test/images/sample-device-plugin:all-srcs",
         "//test/images/serve-hostname:all-srcs",
         "//test/images/test-webserver:all-srcs",
         "//test/images/webhook:all-srcs",

test/images/sample-device-plugin/BASEIMAGE

+amd64=alpine:3.8
+arm=arm32v6/alpine:3.8
+arm64=arm64v8/alpine:3.8
+ppc64le=ppc64le/alpine:3.8
+s390x=s390x/alpine:3.8

test/images/sample-device-plugin/BUILD

+package(default_visibility = ["//visibility:public"])
+
+load("@io_bazel_rules_go//go:def.bzl", "go_binary", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["sampledeviceplugin.go"],
+    importpath = "k8s.io/kubernetes/test/images/sample-device-plugin",
+    visibility = ["//visibility:private"],
+    deps = [
+        "//pkg/kubelet/apis/deviceplugin/v1beta1:go_default_library",
+        "//pkg/kubelet/cm/devicemanager:go_default_library",
+        "//vendor/k8s.io/klog:go_default_library",
+    ],
+)
+
+go_binary(
+    name = "sample-device-plugin",
+    embed = [":go_default_library"],
+    visibility = ["//visibility:public"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

test/images/sample-device-plugin/Dockerfile

+# 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.
+
+FROM BASEIMAGE
+ADD sampledeviceplugin /sampledeviceplugin
+ENTRYPOINT ["/sampledeviceplugin", "-alsologtostderr"]

test/images/sample-device-plugin/Makefile

+# 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.
+
+SRCS=sampledeviceplugin
+ARCH ?= amd64
+TARGET ?= $(CURDIR)
+GOLANG_VERSION ?= latest
+SRC_DIR = $(notdir $(shell pwd))
+export
+
+bin:
+	../image-util.sh bin $(SRCS)
+
+.PHONY: bin

test/images/sample-device-plugin/VERSION

+1.0

test/images/sample-device-plugin/sampledeviceplugin.go

+/*
+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 (
+	"fmt"
+	"os"
+	"path/filepath"
+	"time"
+
+	"k8s.io/klog"
+	pluginapi "k8s.io/kubernetes/pkg/kubelet/apis/deviceplugin/v1beta1"
+	dm "k8s.io/kubernetes/pkg/kubelet/cm/devicemanager"
+)
+
+const (
+	resourceName = "example.com/resource"
+)
+
+// stubAllocFunc creates and returns allocation response for the input allocate request
+func stubAllocFunc(r *pluginapi.AllocateRequest, devs map[string]pluginapi.Device) (*pluginapi.AllocateResponse, error) {
+	var responses pluginapi.AllocateResponse
+	for _, req := range r.ContainerRequests {
+		response := &pluginapi.ContainerAllocateResponse{}
+		for _, requestID := range req.DevicesIDs {
+			dev, ok := devs[requestID]
+			if !ok {
+				return nil, fmt.Errorf("invalid allocation request with non-existing device %s", requestID)
+			}
+
+			if dev.Health != pluginapi.Healthy {
+				return nil, fmt.Errorf("invalid allocation request with unhealthy device: %s", requestID)
+			}
+
+			// create fake device file
+			fpath := filepath.Join("/tmp", dev.ID)
+
+			// clean first
+			if err := os.RemoveAll(fpath); err != nil {
+				return nil, fmt.Errorf("failed to clean fake device file from previous run: %s", err)
+			}
+
+			f, err := os.Create(fpath)
+			if err != nil && !os.IsExist(err) {
+				return nil, fmt.Errorf("failed to create fake device file: %s", err)
+			}
+
+			f.Close()
+
+			response.Mounts = append(response.Mounts, &pluginapi.Mount{
+				ContainerPath: fpath,
+				HostPath:      fpath,
+			})
+		}
+		responses.ContainerResponses = append(responses.ContainerResponses, response)
+	}
+
+	return &responses, nil
+}
+
+func main() {
+	devs := []*pluginapi.Device{
+		{ID: "Dev-1", Health: pluginapi.Healthy},
+		{ID: "Dev-2", Health: pluginapi.Healthy},
+	}
+
+	pluginSocksDir := os.Getenv("PLUGIN_SOCK_DIR")
+	klog.Infof("pluginSocksDir: %s", pluginSocksDir)
+	if pluginSocksDir == "" {
+		klog.Errorf("Empty pluginSocksDir")
+		return
+	}
+	socketPath := pluginSocksDir + "/dp." + fmt.Sprintf("%d", time.Now().Unix())
+
+	dp1 := dm.NewDevicePluginStub(devs, socketPath, resourceName, false)
+	if err := dp1.Start(); err != nil {
+		panic(err)
+
+	}
+	dp1.SetAllocFunc(stubAllocFunc)
+	if err := dp1.Register(pluginapi.KubeletSocket, resourceName, pluginapi.DevicePluginPath); err != nil {
+		panic(err)
+	}
+	select {}
+}