From 38458154d1d5e61294f7461debf1a3add1123380 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Tue, 25 Mar 2014 00:03:20 +0000
Subject: added command for health status


diff --git a/switchctl.c b/switchctl.c
index e62a5a5..7ccfabd 100644
--- a/switchctl.c
+++ b/switchctl.c
@@ -233,8 +233,6 @@ int process_cmd_request(const char* cmd, cmd_id_t cmd_id, const char* param, int
         send_response(client->fd, buf[0]);
         send_response(client->fd, buf[1]);
         send_response(client->fd, buf[2]);
-        send_response(client->fd, buf[3]);
-        send_response(client->fd, buf[4]);
         listener_cnt++;
       }
     log_printf(DEBUG, "sent status to %d additional listeners", listener_cnt);
@@ -564,10 +562,52 @@ int process_cmd_heartbeat(const char* param, int fd, cmd_t **cmd_q, client_t* cl
   return 0;
 }
 
+int send_health_status(int fd, client_t* client_lst)
+{
+  bool mc, sc, hmc, hsc;
+  mc = sc = hmc = hsc = 0;
+
+  client_t* client;
+  for(client = client_lst; client; client = client->next) {
+    switch(client->type) {
+      case MASTER: mc=1; break;
+      case STANDBY: sc=1; break;
+      case HB_MASTER: hmc=1; break;
+      case HB_STANDBY: hsc=1; break;
+      default: break;
+    }
+  }
+
+  char buf[4][50];
+  snprintf(buf[0], 50, "Master: %s", (mc) ? "connected" : "offline");
+  snprintf(buf[1], 50, "Standby: %s", (sc) ? "connected" : "offline");
+  snprintf(buf[2], 50, "Hearbeat Master: %s,%s", (hmc) ? "connected" : "offline", (state_.hb_state_master_) ? "present" : "offline");
+  snprintf(buf[3], 50, "Hearbeat Standby: %s,%s", (hsc) ? "connected" : "offline", (state_.hb_state_standby_) ? "present" : "offline");
+
+  if(fd >= 0) {
+    send_response(fd, buf[0]);
+    send_response(fd, buf[1]);
+    send_response(fd, buf[2]);
+    send_response(fd, buf[3]);
+  }
+
+  int listener_cnt = 0;
+  for(client = client_lst; client; client = client->next)
+    if(client->health_listener && client->fd != fd) {
+      send_response(client->fd, buf[0]);
+      send_response(client->fd, buf[1]);
+      send_response(client->fd, buf[2]);
+      send_response(client->fd, buf[3]);
+      listener_cnt++;
+    }
+  log_printf(DEBUG, "sent health info to %d additional listeners", listener_cnt);
+  return 0;
+}
+
 int process_cmd_health(const char* param, int fd, cmd_t **cmd_q, client_t* client_lst, options_t* opt)
 {
   send_response(fd, "EEE: health not yet implemented!");
-  return 0;
+  return send_health_status(fd, client_lst);
 }
 
 void process_cmd_listen(const char* param, int fd, client_t* client_lst)
@@ -939,6 +979,7 @@ int main_loop(int switch_fd, int cmd_listen_fd, options_t* opt)
         return_value = nonblock_recvline(&(lst->buffer), lst->fd, &cmd_q, client_lst, opt);
         if(return_value == 2) {
           log_printf(DEBUG, "removing closed command connection (fd=%d)", lst->fd);
+          send_health_status(-1, client_lst);
           client_t* deletee = lst;
           lst = lst->next;
           FD_CLR(deletee->fd, &readfds);
-- 
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