Introduce Windows build of Node Problem Detector

Makefile

@@ -86,6 +86,60 @@ fmt:
 version:
 	@echo $(VERSION)
 
+WINDOWS_AMD64_BINARIES = bin/windows_amd64/node-problem-detector.exe bin/windows_amd64/health-checker.exe
+WINDOWS_AMD64_TEST_BINARIES = test/bin/windows_amd64/problem-maker.exe
+LINUX_AMD64_BINARIES = bin/linux_amd64/node-problem-detector bin/linux_amd64/health-checker
+LINUX_AMD64_TEST_BINARIES = test/bin/linux_amd64/problem-maker
+ifeq ($(ENABLE_JOURNALD), 1)
+	LINUX_AMD64_BINARIES += bin/linux_amd64/log-counter
+endif
+
+windows-binaries: $(WINDOWS_AMD64_BINARIES) $(WINDOWS_AMD64_TEST_BINARIES)
+
+bin/windows_amd64/%.exe: $(PKG_SOURCES)
+ifeq ($(ENABLE_JOURNALD), 1)
+	echo "Journald on Windows is not supported, use make ENABLE_JOURNALD=0 [TARGET]"
+endif
+	GOOS=windows GOARCH=amd64 CGO_ENABLED=$(CGO_ENABLED) GO111MODULE=on go build \
+		-mod vendor \
+		-o $@ \
+		-ldflags '-X $(PKG)/pkg/version.version=$(VERSION)' \
+		-tags "$(BUILD_TAGS)" \
+		./cmd/$(subst -,,$*)/$(subst -,_,$*).go
+	touch $@
+
+./test/bin/windows_amd64/%.exe: $(PKG_SOURCES)
+ifeq ($(ENABLE_JOURNALD), 1)
+	echo "Journald on Windows is not supported, use make ENABLE_JOURNALD=0 [TARGET]"
+endif
+	GOOS=windows GOARCH=amd64 CGO_ENABLED=$(CGO_ENABLED) GO111MODULE=on go build \
+		-mod vendor \
+		-o $@ \
+		-tags "$(BUILD_TAGS)" \
+		./test/e2e/$(subst -,,$*)/$(subst -,_,$*).go
+
+bin/linux_amd64/%: $(PKG_SOURCES)
+	GOOS=linux GOARCH=amd64 CGO_ENABLED=$(CGO_ENABLED) GO111MODULE=on go build \
+		-mod vendor \
+		-o $@ \
+		-ldflags '-X $(PKG)/pkg/version.version=$(VERSION)' \
+		-tags "$(BUILD_TAGS)" \
+		./cmd/$(subst -,,$*)/$(subst -,_,$*).go
+	touch $@
+
+./test/bin/linux_amd64/%: $(PKG_SOURCES)
+	GOOS=linux GOARCH=amd64 CGO_ENABLED=$(CGO_ENABLED) GO111MODULE=on go build \
+		-mod vendor \
+		-o $@ \
+		-tags "$(BUILD_TAGS)" \
+		./test/e2e/$(subst -,,$*)/$(subst -,_,$*).go
+
+ifneq ($(ENABLE_JOURNALD), 1)
+bin/linux_amd64/log-counter:
+	echo "Warning: log-counter requires journald, skipping."
+endif
+
+# In the future these targets should be deprecated.
 ./bin/log-counter: $(PKG_SOURCES)
 ifeq ($(ENABLE_JOURNALD), 1)
 	CGO_ENABLED=$(CGO_ENABLED) GOOS=linux GO111MODULE=on go build \
@@ -175,5 +229,6 @@ clean:
 	rm -f bin/health-checker
 	rm -f bin/log-counter
 	rm -f bin/node-problem-detector
+	rm -f $(WINDOWS_AMD64_BINARIES) $(LINUX_AMD64_BINARIES)
 	rm -f test/bin/problem-maker
 	rm -f node-problem-detector-*.tar.gz

pkg/systemlogmonitor/logwatchers/filelog/log_watcher.go

@@ -19,15 +19,12 @@ package filelog
 import (
 	"bufio"
 	"bytes"
-	"fmt"
 	"io"
-	"os"
 	"strings"
 	"time"
 
 	utilclock "code.cloudfoundry.org/clock"
 	"github.com/golang/glog"
-	"github.com/google/cadvisor/utils/tail"
 
 	"k8s.io/node-problem-detector/pkg/systemlogmonitor/logwatchers/types"
 	logtypes "k8s.io/node-problem-detector/pkg/systemlogmonitor/types"
@@ -135,26 +132,3 @@ func (s *filelogWatcher) watchLoop() {
 		s.logCh <- log
 	}
 }
-
-// getLogReader returns log reader for filelog log. Note that getLogReader doesn't look back
-// to the rolled out logs.
-func getLogReader(path string) (io.ReadCloser, error) {
-	if path == "" {
-		return nil, fmt.Errorf("unexpected empty log path")
-	}
-	// To handle log rotation, tail will not report error immediately if
-	// the file doesn't exist. So we check file existence first.
-	// This could go wrong during mid-rotation. It should recover after
-	// several restart when the log file is created again. The chance
-	// is slim but we should still fix this in the future.
-	// TODO(random-liu): Handle log missing during rotation.
-	_, err := os.Stat(path)
-	if err != nil {
-		return nil, fmt.Errorf("failed to stat the file %q: %v", path, err)
-	}
-	tail, err := tail.NewTail(path)
-	if err != nil {
-		return nil, fmt.Errorf("failed to tail the file %q: %v", path, err)
-	}
-	return tail, nil
-}

pkg/systemlogmonitor/logwatchers/filelog/log_watcher_linux.go

@@ -0,0 +1,48 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+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 filelog
+
+import (
+	"fmt"
+	"io"
+	"os"
+
+	"github.com/google/cadvisor/utils/tail"
+)
+
+// getLogReader returns log reader for filelog log. Note that getLogReader doesn't look back
+// to the rolled out logs.
+func getLogReader(path string) (io.ReadCloser, error) {
+	if path == "" {
+		return nil, fmt.Errorf("unexpected empty log path")
+	}
+	// To handle log rotation, tail will not report error immediately if
+	// the file doesn't exist. So we check file existence first.
+	// This could go wrong during mid-rotation. It should recover after
+	// several restart when the log file is created again. The chance
+	// is slim but we should still fix this in the future.
+	// TODO(random-liu): Handle log missing during rotation.
+	_, err := os.Stat(path)
+	if err != nil {
+		return nil, fmt.Errorf("failed to stat the file %q: %v", path, err)
+	}
+	tail, err := tail.NewTail(path)
+	if err != nil {
+		return nil, fmt.Errorf("failed to tail the file %q: %v", path, err)
+	}
+	return tail, nil
+}

pkg/systemlogmonitor/logwatchers/filelog/log_watcher_windows.go

@@ -0,0 +1,29 @@
+/*
+Copyright 2016 The Kubernetes Authors All rights reserved.
+
+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 filelog
+
+import (
+	"fmt"
+	"io"
+)
+
+// getLogReader returns log reader for filelog log. Note that getLogReader doesn't look back
+// to the rolled out logs.
+func getLogReader(path string) (io.ReadCloser, error) {
+	// TODO: Support this on windows.
+	return nil, fmt.Errorf("not supported on windows.")
+}

pkg/systemlogmonitor/logwatchers/kmsg/log_watcher_windows.go

@@ -0,0 +1,31 @@
+/*
+Copyright 2017 The Kubernetes Authors All rights reserved.
+
+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 kmsg
+
+import (
+	"runtime"
+
+	"github.com/golang/glog"
+
+	"k8s.io/node-problem-detector/pkg/systemlogmonitor/logwatchers/types"
+)
+
+// NewKmsgWatcher creates a watcher which will read messages from /dev/kmsg
+func NewKmsgWatcher(cfg types.WatcherConfig) types.LogWatcher {
+	glog.Fatalf("kmsg parser is not supported in %s", runtime.GOOS)
+	return nil
+}

pkg/util/helpers.go

@@ -17,7 +17,6 @@ package util
 
 import (
 	"fmt"
-	"syscall"
 	"time"
 
 	"github.com/cobaugh/osrelease"
@@ -37,14 +36,6 @@ func GenerateConditionChangeEvent(t string, status types.ConditionStatus, reason
 	}
 }
 
-func GetUptimeDuration() (time.Duration, error) {
-	var info syscall.Sysinfo_t
-	if err := syscall.Sysinfo(&info); err != nil {
-		return 0, fmt.Errorf("failed to get system info: %v", err)
-	}
-	return time.Duration(info.Uptime) * time.Second, nil
-}
-
 func GetStartTime(now time.Time, uptimeDuration time.Duration, lookbackStr string, delayStr string) (time.Time, error) {
 	startTime := now.Add(-uptimeDuration)
 

pkg/util/helpers_linux.go

@@ -0,0 +1,31 @@
+/*
+Copyright 2017 The Kubernetes Authors All rights reserved.
+
+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 util
+
+import (
+	"fmt"
+	"syscall"
+	"time"
+)
+
+// GetUptimeDuration returns the time elapsed since last boot.
+func GetUptimeDuration() (time.Duration, error) {
+	var info syscall.Sysinfo_t
+	if err := syscall.Sysinfo(&info); err != nil {
+		return 0, fmt.Errorf("failed to get system info: %v", err)
+	}
+	return time.Duration(info.Uptime) * time.Second, nil
+}

pkg/util/helpers_windows.go

@@ -0,0 +1,31 @@
+/*
+Copyright 2017 The Kubernetes Authors All rights reserved.
+
+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 util
+
+import (
+	"time"
+
+	"github.com/shirou/gopsutil/host"
+)
+
+// GetUptimeDuration returns the time elapsed since last boot.
+func GetUptimeDuration() (time.Duration, error) {
+	ut, err := host.Uptime()
+	if err != nil {
+		return 0, err
+	}
+	return time.Duration(ut), nil
+}