Fix sentry debug regex pattern

that contained two errors leading to truncated data.
1. When the text is specified greedy, multiple debug messages lead to the payload being in the debug text.
2. When not matching also whitespace-characters, the after data is truncated on a newline.

internal/nomad/sentry_debug_writer.go

@@ -21,7 +21,7 @@ var (
 	timeDebugMessageFormatEnd = `%s; ec=$?; ` + timeDebugMessageFormat + ` && exit $ec`
 
 	timeDebugMessagePattern = regexp.MustCompile(
-		`(?P<before>[\S\s]*?)\x1EPoseidon (?P<text>[^\x1E]+) (?P<time>\d{13})\x1E(?P<after>.*)`)
+		`(?P<before>[\S\s]*?)\x1EPoseidon (?P<text>[^\x1E]+?) (?P<time>\d{13})\x1E(?P<after>[\S\s]*)`)
 	timeDebugMessagePatternStart = regexp.MustCompile(`\x1EPoseidon`)
 )
 

internal/nomad/sentry_debug_writer_test.go

@@ -29,6 +29,19 @@ func (s *MainTestSuite) TestSentryDebugWriter_WriteComposed() {
 	s.Contains(buf.String(), "Hello World!")
 }
 
+func (s *MainTestSuite) TestSentryDebugWriter_regression_issue_678() {
+	buf := &bytes.Buffer{}
+	debugWriter := NewSentryDebugWriter(s.TestCtx, buf)
+
+	innerData := "HOSTNAME=4bf0a8e5dbe4\r\nLANGUAGE=en_US.UTF-8\r\nJAVA_HOME=/usr/lib/jvm/java-8-openjdk-arm64\r\nJUNIT=/usr/java/lib/junit-4.13.2.jar\r\nPWD=/workspace\r\n_=/usr/bin/env\r\nHOME=/workspace\r\nLANG=en_US.UTF-8\r\nCOLUMNS=10000\r\nTERM=ansi\r\nUSER=user\r\nSHLVL=2\r\nANTLR=/usr/java/lib/antlr-4.5.3-complete.jar\r\nCODEOCEAN=true\r\nCLASSPATH=.:/usr/java/lib/hamcrest-3.0.jar:/usr/java/lib/junit-4.13.2.jar:/usr/java/lib/antlr-4.5.3-complete.jar:/usr/java/lib/antlr-java8.jar\r\nHAMCREST=/usr/java/lib/hamcrest-3.0.jar\r\nLC_ALL=en_US.UTF-8\r\nPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin\r\nANTLR_JAVA8=/usr/java/lib/antlr-java8.jar\r\nUID=1001\r\nDEBIAN_FRONTEND=teletype\r\n" //nolint:lll // regression payload
+	data := "\x1ePoseidon env 1725462286085\x1e" + innerData + "\x1ePoseidon exit 0 1725462286087\x1e"
+	count, err := debugWriter.Write([]byte(data))
+
+	s.Require().NoError(err)
+	s.Equal(len(data), count)
+	s.Equal(innerData, buf.String())
+}
+
 func (s *MainTestSuite) TestSentryDebugWriter_Close() {
 	buf := &bytes.Buffer{}
 	w := NewSentryDebugWriter(s.TestCtx, buf)