From c1decc63d80fded8fb0377abc3c324fc3fe6f4a6 Mon Sep 17 00:00:00 2001
From: Christian Pointner <equinox@helsinki.at>
Date: Tue, 25 Mar 2014 00:10:40 +0000
Subject: fixed health messages


diff --git a/switchctl.c b/switchctl.c
index 7ccfabd..f4a8b0e 100644
--- a/switchctl.c
+++ b/switchctl.c
@@ -358,6 +358,48 @@ int process_cmd_channel(const char* cmd, const char* param, int fd, cmd_t **cmd_
   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;
+}
+
 void process_cmd_type(const char* param, int fd, client_t* client_lst)
 {
   if(param) {
@@ -382,6 +424,7 @@ void process_cmd_type(const char* param, int fd, client_t* client_lst)
           return;
         }
         log_printf(DEBUG, "client %d type set to %s", fd, param);
+        send_health_status(-1, client_lst);
       }
       else {
         log_printf(ERROR, "unable to set client type for %d: type already set to %s", fd, client_type_tostring(client->type));
@@ -490,28 +533,13 @@ int process_cmd_heartbeat(const char* param, int fd, cmd_t **cmd_q, client_t* cl
   if(param) {
     client_t* client = client_find(client_lst, fd);
     if(client) {
-      char* message = NULL;
       switch(client->type) {
         case HB_MASTER: {
-          bool old_state = state_.hb_state_master_;
           state_.hb_state_master_ = (param[0] == '1') ? TRUE : FALSE;
-          if(old_state != state_.hb_state_master_) {
-            if(state_.hb_state_master_)
-              message = "Health: master heartbeat is back!";
-            else
-              message = "Health: master heartbeat timed out!";
-          }
           break;
         }
         case HB_STANDBY: {
-          bool old_state = state_.hb_state_standby_;
           state_.hb_state_standby_ = (param[0] == '1') ? TRUE : FALSE;
-          if(old_state != state_.hb_state_standby_) {
-            if(state_.hb_state_standby_)
-              message = "Health: standby heartbeat is back!";
-            else
-              message = "Health: standby heartbeat timed out!";
-          }
           break;
         }
         default: {
@@ -520,34 +548,22 @@ int process_cmd_heartbeat(const char* param, int fd, cmd_t **cmd_q, client_t* cl
           break;
         }
       }
+      send_health_status(-1, client_lst);
       switchctl_mode_t old_mode = state_.mode_;
       if(state_.mode_ == MODE_MASTER) {
         if(!state_.hb_state_master_) {
           if(state_.hb_state_standby_) {
             state_.mode_ = MODE_STANDBY;
             return change_mode(old_mode, fd, cmd_q, opt, client_lst);
-          } else
-            message = "Health: both heartbeats are offline!";
+          }
         }
       } else {
         if(!state_.hb_state_standby_) {
           if(state_.hb_state_master_) {
             state_.mode_ = MODE_MASTER;
             return change_mode(old_mode, fd, cmd_q, opt, client_lst);
-          } else
-            message = "Health: both heartbeats are offline!";
-        }
-      }
-      if(message) {
-        log_printf(ERROR, message);
-        client_t* client;
-        int listener_cnt = 0;
-        for(client = client_lst; client; client = client->next)
-          if(client->health_listener && client->fd != fd) {
-            send_response(client->fd, message);
-            listener_cnt++;
           }
-        log_printf(DEBUG, "sent health info to %d additional listeners", listener_cnt);
+        }
       }
     }
     else {
@@ -562,51 +578,8 @@ 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 send_health_status(fd, client_lst);
 }
 
@@ -979,11 +952,11 @@ 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);
           client_remove(&client_lst, deletee->fd);
+          send_health_status(-1, client_lst);
           return_value = 0;
           continue;
         }
-- 
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