adds a health service for determining the status of the workers

This commit adds a health service which ensures that at least
one worker is active. Uses `isActive()` to determine if the
worker is ready. The health service runs on a seperate address.
Will return a HTTP 200 if health, HTTP 500 otherwise.

Fixes #192

Signed-off-by: Alex Price <[email protected]>

1 files changed, 43 insertions, 0 deletions

diff --git a/service/health/config_test.go b/service/health/config_test.go
new file mode 100644
index 00000000..9068f2ca
--- /dev/null
+++ b/service/health/config_test.go
@@ -0,0 +1,43 @@
+package health
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/spiral/roadrunner/service"
+	"github.com/stretchr/testify/assert"
+)
+
+type mockCfg struct{ cfg string }
+
+func (cfg *mockCfg) Get(name string) service.Config  { return nil }
+func (cfg *mockCfg) Unmarshal(out interface{}) error { return json.Unmarshal([]byte(cfg.cfg), out) }
+
+func Test_Config_Hydrate_Error1(t *testing.T) {
+	cfg := &mockCfg{`{"address": "localhost:8080"}`}
+	c := &Config{}
+
+	assert.NoError(t, c.Hydrate(cfg))
+	assert.Equal(t, "localhost:8080", c.Address)
+}
+
+func Test_Config_Hydrate_Error2(t *testing.T) {
+	cfg := &mockCfg{`{"dir": "/dir/"`}
+	c := &Config{}
+
+	assert.Error(t, c.Hydrate(cfg))
+}
+
+func Test_Config_Hydrate_Valid1(t *testing.T) {
+	cfg := &mockCfg{`{"address": "localhost"}`}
+	c := &Config{}
+
+	assert.Error(t, c.Hydrate(cfg))
+}
+
+func Test_Config_Hydrate_Valid2(t *testing.T) {
+	cfg := &mockCfg{`{"address": ":1111"}`}
+	c := &Config{}
+
+	assert.NoError(t, c.Hydrate(cfg))
+}