Add event filter support

http/api/event_test.go

@@ -0,0 +1,45 @@
+package api
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestEventFilter(t *testing.T) {
+	event := Event{
+		Timestamp: 1234,
+		Level:     0,
+		Component: "foobar",
+		Message:   "none",
+		Data: map[string]string{
+			"foo": "bar",
+		},
+	}
+
+	foobarfilter := EventFilter{
+		Component: "foobar",
+		Data: map[string]string{
+			"foo": "^b.*$",
+		},
+	}
+
+	err := foobarfilter.Compile()
+	require.NoError(t, err)
+
+	foobazfilter := EventFilter{
+		Component: "foobaz",
+		Data: map[string]string{
+			"foo": "baz",
+		},
+	}
+
+	err = foobazfilter.Compile()
+	require.NoError(t, err)
+
+	res := event.Filter(&foobarfilter)
+	require.True(t, res)
+
+	res = event.Filter(&foobazfilter)
+	require.False(t, res)
+}