From 1fd4e60e9d03c0e3aa79f5f0bac87f07c63081f5 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Wed, 4 Jun 2014 20:50:00 +0100
Subject: [PATCH] send ubus_notify events when servers and instances change
 state

Signed-off-by: John Crispin <blogic@openwrt.org>
---
 service/instance.c |  2 ++
 service/service.c  | 16 +++++++++++++++-
 service/service.h  |  1 +
 3 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/service/instance.c b/service/instance.c
index fa3594b..e410bc4 100644
--- a/service/instance.c
+++ b/service/instance.c
@@ -188,6 +188,7 @@ instance_start(struct service_instance *in)
 	in->proc.pid = pid;
 	clock_gettime(CLOCK_MONOTONIC, &in->start);
 	uloop_process_add(&in->proc);
+	service_event("instance.start", in->srv->name, in->name);
 }
 
 static void
@@ -236,6 +237,7 @@ instance_exit(struct uloop_process *p, int ret)
 			uloop_timeout_set(&in->timeout, in->respawn_timeout * 1000);
 		}
 	}
+	service_event("instance.stop", in->srv->name, in->name);
 }
 
 void
diff --git a/service/service.c b/service/service.c
index 8d1217f..6426929 100644
--- a/service/service.c
+++ b/service/service.c
@@ -24,6 +24,7 @@
 
 struct avl_tree services;
 static struct blob_buf b;
+static struct ubus_context *ctx;
 
 static void
 service_instance_add(struct service *s, struct blob_attr *attr)
@@ -146,6 +147,7 @@ service_update(struct service *s, struct blob_attr **tb, bool add)
 static void
 service_delete(struct service *s)
 {
+	service_event("service.stop", s->name, NULL);
 	vlist_flush_all(&s->instances);
 	avl_delete(&services, &s->avl);
 	trigger_del(s);
@@ -242,6 +244,8 @@ service_handle_set(struct ubus_context *ctx, struct ubus_object *obj,
 
 	avl_insert(&services, &s->avl);
 
+	service_event("service.start", s->name, NULL);
+
 	return 0;
 }
 
@@ -447,8 +451,18 @@ service_start_early(char *name, char *cmdline)
 	return service_handle_set(NULL, NULL, NULL, "add", b.head);
 }
 
-void ubus_init_service(struct ubus_context *ctx)
+void service_event(const char *type, const char *service, const char *instance)
+{
+	blob_buf_init(&b, 0);
+	blobmsg_add_string(&b, "service", service);
+	if (instance)
+		blobmsg_add_string(&b, "instance", instance);
+	ubus_notify(ctx, &main_object, type, b.head, -1);
+}
+
+void ubus_init_service(struct ubus_context *_ctx)
 {
+	ctx = _ctx;
 	ubus_add_object(ctx, &main_object);
 }
 
diff --git a/service/service.h b/service/service.h
index 46ba746..892a147 100644
--- a/service/service.h
+++ b/service/service.h
@@ -53,5 +53,6 @@ int service_start_early(char *name, char *cmdline);
 void service_validate_del(struct service *s);
 void service_validate_init(void);
 void service_init(void);
+void service_event(const char *type, const char *service, const char *instance);
 
 #endif
-- 
2.11.0