// New returns a new logger (that writes to the specified file) & the open file handle // All log levels >= the specified level are written to the specified file. // User is responsible for closing the returned file handle, unless an error is returned. func New(level boshlog.LogLevel, filePath string, fileMode os.FileMode, fs boshsys.FileSystem) (boshlog.Logger, boshsys.File, error) { file, err := fs.OpenFile(filePath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, fileMode) if err != nil { return nil, file, bosherr.WrapErrorf(err, "Failed to open log file '%s'", filePath) } return boshlog.NewWriterLogger(level, file, file), file, nil }
package logger_test import ( "bytes" agentlogger "github.com/cloudfoundry/bosh-agent/bootstrapper/logger" "github.com/cloudfoundry/bosh-agent/internal/github.com/cloudfoundry/bosh-utils/logger" . "github.com/cloudfoundry/bosh-agent/internal/github.com/onsi/ginkgo" . "github.com/cloudfoundry/bosh-agent/internal/github.com/onsi/gomega" "os" "syscall" ) var _ = Describe("Signalable logger debug", func() { Describe("when SIGSEGV is recieved", func() { It("it dumps all goroutines to stderr", func() { errBuf := bytes.NewBufferString("") outBuf := bytes.NewBufferString("") signalChannel := make(chan os.Signal, 1) writerLogger := logger.NewWriterLogger(logger.LevelError, outBuf, errBuf) _, doneChannel := agentlogger.NewSignalableLogger(writerLogger, signalChannel) signalChannel <- syscall.SIGSEGV <-doneChannel Expect(errBuf).To(ContainSubstring("Dumping goroutines")) Expect(errBuf).To(ContainSubstring("goroutine 5 [syscall]")) }) }) })
}) It("returns error if server fails to listen", func() { listenerProvider = func(protocol, Iaddr string) (net.Listener, error) { return nil, errors.New("Fail!") } server := NewServer(10, listenerProvider, logger) err := server.Start(nil) Expect(err).To(HaveOccurred()) Expect(err.Error()).To(ContainSubstring("Fail!")) }) It("logs parsing error to error log if parsing syslog message fails", func() { outBuf := bytes.NewBufferString("") errBuf := newLockedWriter(bytes.NewBufferString("")) logger := boshlog.NewWriterLogger(boshlog.LevelDebug, outBuf, errBuf) server = NewServer(serverPort, listenerProvider, logger) doneCh := make(chan struct{}) go server.Start(captureNMsgs(doneCh, 2)) conn, err := waitToDial() Expect(err).ToNot(HaveOccurred()) fmt.Fprintf(conn, "<38>Jan 1 00:00:00 localhost sshd[22636]: msg1\n") fmt.Fprintf(conn, "invalid-syslog-format\n") fmt.Fprintf(conn, "<38>Jan 1 00:00:00 localhost sshd[22636]: msg2\n") <-doneCh err = server.Stop()
func init() { Describe("App", func() { var ( baseDir string agentConfPath string agentConfJSON string app App ) BeforeEach(func() { var err error baseDir, err = ioutil.TempDir("", "go-agent-test") Expect(err).ToNot(HaveOccurred()) err = os.Mkdir(filepath.Join(baseDir, "bosh"), os.ModePerm) Expect(err).ToNot(HaveOccurred()) }) BeforeEach(func() { agentConfPath = filepath.Join(baseDir, "bosh", "agent.json") agentConfJSON = `{ "Infrastructure": { "Settings": { "Sources": [{ "Type": "CDROM", "FileName": "/fake-file-name" }] } } }` settingsPath := filepath.Join(baseDir, "bosh", "settings.json") settingsJSON := `{ "agent_id": "my-agent-id", "blobstore": { "options": { "bucket_name": "george", "encryption_key": "optional encryption key", "access_key_id": "optional access key id", "secret_access_key": "optional secret access key" }, "provider": "dummy" }, "disks": { "ephemeral": "/dev/sdb", "persistent": { "vol-xxxxxx": "/dev/sdf" }, "system": "/dev/sda1" }, "env": { "bosh": { "password": "******" } }, "networks": { "netA": { "default": ["dns", "gateway"], "ip": "ww.ww.ww.ww", "dns": [ "xx.xx.xx.xx", "yy.yy.yy.yy" ] }, "netB": { "dns": [ "zz.zz.zz.zz" ] } }, "Mbus": "https://*****:*****@0.0.0.0:6868", "ntp": [ "0.north-america.pool.ntp.org", "1.north-america.pool.ntp.org" ], "vm": { "name": "vm-abc-def" } }` err := ioutil.WriteFile(settingsPath, []byte(settingsJSON), 0640) Expect(err).ToNot(HaveOccurred()) }) JustBeforeEach(func() { err := ioutil.WriteFile(agentConfPath, []byte(agentConfJSON), 0640) Expect(err).ToNot(HaveOccurred()) logger := boshlog.NewLogger(boshlog.LevelNone) fakefs := boshsys.NewOsFileSystem(logger) app = New(logger, fakefs) }) AfterEach(func() { os.RemoveAll(baseDir) }) It("Sets up device path resolver on platform specific to infrastructure", func() { err := app.Setup([]string{"bosh-agent", "-P", "dummy", "-C", agentConfPath, "-b", baseDir}) Expect(err).ToNot(HaveOccurred()) Expect(app.GetPlatform().GetDevicePathResolver()).To(Equal(devicepathresolver.NewIdentityDevicePathResolver())) }) Context("when DevicePathResolutionType is 'virtio'", func() { BeforeEach(func() { agentConfJSON = `{ "Platform": { "Linux": { "DevicePathResolutionType": "virtio" } }, "Infrastructure": { "Settings": { "Sources": [{ "Type": "CDROM", "FileName": "/fake-file-name" }] } } }` }) It("uses a VirtioDevicePathResolver", func() { err := app.Setup([]string{"bosh-agent", "-P", "dummy", "-C", agentConfPath, "-b", baseDir}) Expect(err).ToNot(HaveOccurred()) logLevel, err := boshlog.Levelify("DEBUG") Expect(err).NotTo(HaveOccurred()) Expect(app.GetPlatform().GetDevicePathResolver()).To( BeAssignableToTypeOf(devicepathresolver.NewVirtioDevicePathResolver(nil, nil, boshlog.NewLogger(logLevel)))) }) }) Context("when DevicePathResolutionType is 'scsi'", func() { BeforeEach(func() { agentConfJSON = `{ "Platform": { "Linux": { "DevicePathResolutionType": "scsi" } }, "Infrastructure": { "Settings": { "Sources": [{ "Type": "CDROM", "FileName": "/fake-file-name" }] } } }` }) It("uses a VirtioDevicePathResolver", func() { err := app.Setup([]string{"bosh-agent", "-P", "dummy", "-C", agentConfPath, "-b", baseDir}) Expect(err).ToNot(HaveOccurred()) Expect(app.GetPlatform().GetDevicePathResolver()).To( BeAssignableToTypeOf(devicepathresolver.NewScsiDevicePathResolver(0, nil))) }) }) Context("logging stemcell version and git sha", func() { var ( logger boshlog.Logger outBuf *bytes.Buffer fakeFs boshsys.FileSystem stemcellVersionFilePath string stemcellSha1FilePath string ) JustBeforeEach(func() { outBuf = bytes.NewBufferString("") errBuf := bytes.NewBufferString("") logger = boshlog.NewWriterLogger(boshlog.LevelDebug, outBuf, errBuf) fakeFs = fakesys.NewFakeFileSystem() dirProvider := boshdirs.NewProvider(baseDir) stemcellVersionFilePath = filepath.Join(dirProvider.EtcDir(), "stemcell_version") stemcellSha1FilePath = filepath.Join(dirProvider.EtcDir(), "stemcell_git_sha1") app = New(logger, fakeFs) }) Context("when stemcell version and sha files are present", func() { It("should print out the stemcell version and sha in the logs", func() { fakeFs.WriteFileString(stemcellVersionFilePath, "version-blah") fakeFs.WriteFileString(stemcellSha1FilePath, "sha1-blah") app.Setup([]string{"bosh-agent", "-P", "dummy", "-C", agentConfPath, "-b", baseDir}) Expect(string(outBuf.Bytes())).To(ContainSubstring("Running on stemcell version 'version-blah' (git: sha1-blah)")) }) }) Context("when stemcell version file is NOT present", func() { It("should print out the sha in the logs", func() { fakeFs.WriteFileString(stemcellSha1FilePath, "sha1-blah") app.Setup([]string{"bosh-agent", "-P", "dummy", "-C", agentConfPath, "-b", baseDir}) Expect(string(outBuf.Bytes())).To(ContainSubstring("Running on stemcell version '?' (git: sha1-blah)")) }) }) Context("when sha version file is NOT present", func() { It("should print out the stemcell version in the logs", func() { fakeFs.WriteFileString(stemcellVersionFilePath, "version-blah") app.Setup([]string{"bosh-agent", "-P", "dummy", "-C", agentConfPath, "-b", baseDir}) Expect(string(outBuf.Bytes())).To(ContainSubstring("Running on stemcell version 'version-blah' (git: ?)")) }) }) Context("when stemcell version file is empty", func() { It("should print out the sha in the logs", func() { fakeFs.WriteFileString(stemcellVersionFilePath, "") fakeFs.WriteFileString(stemcellSha1FilePath, "sha1-blah") app.Setup([]string{"bosh-agent", "-P", "dummy", "-C", agentConfPath, "-b", baseDir}) Expect(string(outBuf.Bytes())).To(ContainSubstring("Running on stemcell version '?' (git: sha1-blah)")) }) }) Context("when sha version file is empty", func() { It("should print out the stemcell version in the logs", func() { fakeFs.WriteFileString(stemcellVersionFilePath, "version-blah") fakeFs.WriteFileString(stemcellSha1FilePath, "") app.Setup([]string{"bosh-agent", "-P", "dummy", "-C", agentConfPath, "-b", baseDir}) Expect(string(outBuf.Bytes())).To(ContainSubstring("Running on stemcell version 'version-blah' (git: ?)")) }) }) Context("when stemcell version and sha files are NOT present", func() { It("should print unknown version and sha in the logs", func() { app.Setup([]string{"bosh-agent", "-P", "dummy", "-C", agentConfPath, "-b", baseDir}) Expect(string(outBuf.Bytes())).To(ContainSubstring("Running on stemcell version '?' (git: ?)")) }) }) }) }) }