fix: input plugin statsd bug (#10116)

config/config.go

@@ -165,7 +165,8 @@ type AgentConfig struct {
 	// TODO(cam): Remove UTC and parameter, they are no longer
 	// valid for the agent config. Leaving them here for now for backwards-
 	// compatibility
-	UTC bool `toml:"utc"` // deprecated in 1.0.0; has no effect
+	// Deprecated: 1.0.0 after, has no effect
+	UTC bool `toml:"utc"`
 
 	// Debug is the option for running in debug mode
 	Debug bool `toml:"debug"`

plugins/inputs/statsd/statsd.go

@@ -797,6 +797,12 @@ func parseKeyValue(keyValue string) (key string, val string) {
 		val = split[1]
 	} else if len(split) == 1 {
 		val = split[0]
+	} else if len(split) > 2 {
+		// fix: https://github.com/influxdata/telegraf/issues/10113
+		// fix: value has "=" parse error
+		// uri=/service/endpoint?sampleParam={paramValue} parse value key="uri", val="/service/endpoint?sampleParam\={paramValue}"
+		key = split[0]
+		val = strings.Join(split[1:], "=")
 	}
 
 	return key, val

plugins/inputs/statsd/statsd_test.go

@@ -1674,3 +1674,30 @@ func TestParse_Ints(t *testing.T) {
 	require.NoError(t, s.Gather(acc))
 	require.Equal(t, s.Percentiles, []Number{90.0})
 }
+
+func TestParse_KeyValue(t *testing.T) {
+	type output struct {
+		key string
+		val string
+	}
+
+	validLines := []struct {
+		input  string
+		output output
+	}{
+		{"", output{"", ""}},
+		{"only value", output{"", "only value"}},
+		{"key=value", output{"key", "value"}},
+		{"url=/api/querystring?key1=val1&key2=value", output{"url", "/api/querystring?key1=val1&key2=value"}},
+	}
+
+	for _, line := range validLines {
+		key, val := parseKeyValue(line.input)
+		if key != line.output.key {
+			t.Errorf("line: %s,  key expected %s, actual %s", line, line.output.key, key)
+		}
+		if val != line.output.val {
+			t.Errorf("line: %s,  val expected %s, actual %s", line, line.output.val, val)
+		}
+	}
+}