func newSignalableLogger(logger logger.Logger) logger.Logger {
c := make(chan os.Signal, 1)
signal.Notify(c, syscall.SIGSEGV)
signalableLogger, _ := agentlogger.NewSignalableLogger(logger, c)
return signalableLogger
}
package agentlogger_test
import (
"bytes"
"os"
"syscall"
"github.com/cloudfoundry/bosh-agent/infrastructure/agentlogger"
"github.com/cloudfoundry/bosh-utils/logger"
. "github.com/onsi/ginkgo"
. "github.com/onsi/gomega"
)
var _ = Describe("Signalable logger debug", func() {
Describe("when SIGSEGV is recieved", func() {
It("it dumps all goroutines to stderr", func() {
errBuf := new(bytes.Buffer)
outBuf := new(bytes.Buffer)
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(MatchRegexp(`goroutine (\d+) \[(syscall|running)\]`))
})
})
})