adding subscribers count by each worker as part of statistics

include/ngx_http_push_stream_module.h

@@ -121,6 +121,8 @@ typedef struct {
 typedef struct {
     ngx_http_push_stream_worker_msg_t            messages_queue;
     ngx_http_push_stream_worker_subscriber_t     worker_subscribers_sentinel;
+    ngx_uint_t                                   subscribers; // # of subscribers in the worker
+    pid_t                                        pid;
 } ngx_http_push_stream_worker_data_t;
 
 // shared memory

include/ngx_http_push_stream_module_utils.h

@@ -21,36 +21,47 @@ typedef struct {
     ngx_str_t            *format_group_last_item;
     ngx_str_t            *format_group_tail;
     ngx_str_t            *format_summarized;
+    ngx_str_t            *format_summarized_worker_item;
+    ngx_str_t            *format_summarized_worker_last_item;
 } ngx_http_push_stream_content_subtype_t;
 
 
 #define  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_PLAIN_PATTERN "channel: %s" CRLF"published_messages: %ui" CRLF"stored_messages: %ui" CRLF"active_subscribers: %ui"
+#define  NGX_HTTP_PUSH_STREAM_WORKER_INFO_PLAIN_PATTERN "  pid: %d" CRLF"  subscribers: %ui"
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_PLAIN = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_PLAIN_PATTERN CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_HEAD_PLAIN = ngx_string("hostname: %s, time: %s, channels: %ui, broadcast_channels: %ui, infos: " CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_PLAIN = ngx_string(CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_PLAIN = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_PLAIN_PATTERN "," CRLF);
-static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_PLAIN = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_PLAIN_PATTERN CRLF);
-static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_PLAIN = ngx_string("hostname: %s" CRLF "time: %s" CRLF "channels: %ui" CRLF "broadcast_channels: %ui" CRLF "published_messages: %ui" CRLF "subscribers: %ui" CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_PLAIN = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_PLAIN_PATTERN);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_PLAIN = ngx_string("hostname: %s" CRLF "time: %s" CRLF "channels: %ui" CRLF "broadcast_channels: %ui" CRLF "published_messages: %ui" CRLF "subscribers: %ui" CRLF "by_worker:"CRLF"%s" CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_PLAIN = ngx_string(NGX_HTTP_PUSH_STREAM_WORKER_INFO_PLAIN_PATTERN "," CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_PLAIN = ngx_string(NGX_HTTP_PUSH_STREAM_WORKER_INFO_PLAIN_PATTERN);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_PLAIN = ngx_string("text/plain");
 
 
 #define  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_JSON_PATTERN "{\"channel\": \"%s\", \"published_messages\": \"%ui\", \"stored_messages\": \"%ui\", \"subscribers\": \"%ui\"}"
+#define  NGX_HTTP_PUSH_STREAM_WORKER_INFO_JSON_PATTERN "{\"pid\": \"%d\", \"subscribers\": \"%ui\"}"
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_JSON = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_JSON_PATTERN CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_HEAD_JSON = ngx_string("{\"hostname\": \"%s\", \"time\": \"%s\", \"channels\": \"%ui\", \"broadcast_channels\": \"%ui\", \"infos\": [" CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_JSON = ngx_string("]}" CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_JSON = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_JSON_PATTERN "," CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_JSON = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_JSON_PATTERN CRLF);
-static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_JSON = ngx_string("{\"hostname\": \"%s\", \"time\": \"%s\", \"channels\": \"%ui\", \"broadcast_channels\": \"%ui\", \"published_messages\": \"%ui\", \"subscribers\": \"%ui\"}" CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_JSON = ngx_string("{\"hostname\": \"%s\", \"time\": \"%s\", \"channels\": \"%ui\", \"broadcast_channels\": \"%ui\", \"published_messages\": \"%ui\", \"subscribers\": \"%ui\", \"by_worker\": [" CRLF "%s" CRLF"]}" CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_JSON = ngx_string(NGX_HTTP_PUSH_STREAM_WORKER_INFO_JSON_PATTERN "," CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_JSON = ngx_string(NGX_HTTP_PUSH_STREAM_WORKER_INFO_JSON_PATTERN);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_JSON = ngx_string("application/json");
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_X_JSON = ngx_string("text/x-json");
 
 #define  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_YAML_PATTERN "  channel: %s" CRLF"  published_messages: %ui" CRLF"  stored_messages: %ui" CRLF"  subscribers: %ui"
+#define  NGX_HTTP_PUSH_STREAM_WORKER_INFO_YAML_PATTERN "    pid: %d" CRLF"    subscribers: %ui"
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_YAML = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_YAML_PATTERN CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_HEAD_YAML = ngx_string("hostname: %s" CRLF"time: %s" CRLF"channels: %ui" CRLF"broadcast_channels: %ui" CRLF"infos: "CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_YAML = ngx_string(CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_YAML = ngx_string(" -" CRLF NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_YAML_PATTERN CRLF);
-static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_YAML = ngx_string(" -" CRLF NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_YAML_PATTERN CRLF);
-static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_YAML = ngx_string("  hostname: %s" CRLF"  time: %s" CRLF"  channels: %ui" CRLF"  broadcast_channels: %ui" CRLF"  published_messages: %ui" CRLF"  subscribers: %ui" CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_YAML = ngx_string(" -" CRLF NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_YAML_PATTERN);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_YAML = ngx_string("  hostname: %s" CRLF"  time: %s" CRLF"  channels: %ui" CRLF"  broadcast_channels: %ui" CRLF"  published_messages: %ui" CRLF"  subscribers: %ui" CRLF "  by_worker:"CRLF"%s" CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_YAML = ngx_string("   -" CRLF NGX_HTTP_PUSH_STREAM_WORKER_INFO_YAML_PATTERN CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_YAML = ngx_string("   -" CRLF NGX_HTTP_PUSH_STREAM_WORKER_INFO_YAML_PATTERN);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_YAML = ngx_string("application/yaml");
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_X_YAML = ngx_string("text/x-yaml");
 
@@ -62,11 +73,16 @@ static ngx_str_t  NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_X_YAML = ngx_string("text/x-
     "  <stored_messages>%ui</stored_messages>" CRLF \
     "  <subscribers>%ui</subscribers>" CRLF \
     "</channel>" CRLF
+#define  NGX_HTTP_PUSH_STREAM_WORKER_INFO_XML_PATTERN \
+	    "<worker>" CRLF \
+	    "  <pid>%d</pid>" CRLF \
+	    "  <subscribers>%ui</subscribers>" CRLF \
+	    "</worker>" CRLF
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_XML = ngx_string("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" CRLF NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_XML_PATTERN CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_HEAD_XML = ngx_string("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" CRLF "<root>" CRLF"  <hostname>%s</hostname>" CRLF"  <time>%s</time>" CRLF"  <channels>%ui</channels>" CRLF"  <broadcast_channels>%ui</broadcast_channels>" CRLF"  <infos>" CRLF);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_XML = ngx_string("  </infos>" CRLF"</root>" CRLF);
-static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_XML = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_XML_PATTERN CRLF);
-static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_XML = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_XML_PATTERN CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_XML = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_XML_PATTERN);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_XML = ngx_string(NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_XML_PATTERN);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_XML = ngx_string(
         "<?xml version=\"1.0\" encoding=\"UTF-8\" ?>" CRLF \
         "<infos>" CRLF \
@@ -76,7 +92,10 @@ static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_XML = ngx_string
         "  <broadcast_channels>%ui</broadcast_channels>" CRLF \
         "  <published_messages>%ui</published_messages>" CRLF \
         "  <subscribers>%ui</subscribers>" CRLF\
+        "  <by_worker>%s</by_worker>" CRLF\
         "</infos>" CRLF);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_XML = ngx_string(NGX_HTTP_PUSH_STREAM_WORKER_INFO_XML_PATTERN);
+static ngx_str_t  NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_XML = ngx_string(NGX_HTTP_PUSH_STREAM_WORKER_INFO_XML_PATTERN);
 static ngx_str_t  NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_XML = ngx_string("application/xml");
 
 static ngx_http_push_stream_content_subtype_t subtypes[] = {
@@ -87,7 +106,9 @@ static ngx_http_push_stream_content_subtype_t subtypes[] = {
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_PLAIN,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_PLAIN,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_PLAIN,
-            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_PLAIN },
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_PLAIN,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_PLAIN,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_PLAIN},
     { "json"  , 4,
             &NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_JSON,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_JSON,
@@ -95,7 +116,9 @@ static ngx_http_push_stream_content_subtype_t subtypes[] = {
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_JSON,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_JSON,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_JSON,
-            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_JSON },
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_JSON,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_JSON,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_JSON },
     { "yaml"  , 4,
             &NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_YAML,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_YAML,
@@ -103,7 +126,9 @@ static ngx_http_push_stream_content_subtype_t subtypes[] = {
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_YAML,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_YAML,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_YAML,
-            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_YAML },
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_YAML,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_YAML,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_YAML },
     { "xml"   , 3,
             &NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_XML,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_XML,
@@ -111,7 +136,9 @@ static ngx_http_push_stream_content_subtype_t subtypes[] = {
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_XML,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_XML,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_XML,
-            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_XML },
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_XML,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_XML,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_XML },
     { "x-json", 6,
             &NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_X_JSON,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_JSON,
@@ -119,7 +146,9 @@ static ngx_http_push_stream_content_subtype_t subtypes[] = {
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_JSON,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_JSON,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_JSON,
-            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_JSON },
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_JSON,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_JSON,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_JSON },
     { "x-yaml", 6,
             &NGX_HTTP_PUSH_STREAM_CONTENT_TYPE_X_YAML,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_YAML,
@@ -127,7 +156,9 @@ static ngx_http_push_stream_content_subtype_t subtypes[] = {
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_ITEM_YAML,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_LAST_ITEM_YAML,
             &NGX_HTTP_PUSH_STREAM_CHANNEL_INFO_GROUP_TAIL_YAML,
-            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_YAML }
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_YAML,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_ITEM_YAML,
+            &NGX_HTTP_PUSH_STREAM_CHANNELS_INFO_SUMMARIZED_WORKER_LAST_ITEM_YAML }
 };
 
 static const ngx_str_t  NGX_PUSH_STREAM_PING_MESSAGE_ID = ngx_string("-1");

src/ngx_http_push_stream_module.c

@@ -119,8 +119,11 @@ ngx_http_push_stream_send_response_all_channels_info_summarized(ngx_http_request
 
     ngx_buf_t                                   *b;
     ngx_uint_t                                   len;
-    ngx_str_t                                   *currenttime, *hostname;
+    ngx_str_t                                   *currenttime, *hostname, *format;
+    u_char                                      *subscribers_by_workers, *start;
+    int                                          i;
     ngx_http_push_stream_shm_data_t             *shm_data;
+    ngx_http_push_stream_worker_data_t          *worker_data;
     ngx_http_push_stream_content_subtype_t      *subtype;
 
     subtype = ngx_http_push_stream_match_channel_info_format_and_content_type(r, 1);
@@ -129,7 +132,17 @@ ngx_http_push_stream_send_response_all_channels_info_summarized(ngx_http_request
 
     shm_data = (ngx_http_push_stream_shm_data_t *) ngx_http_push_stream_shm_zone->data;
 
-    len = 3*NGX_INT_T_LEN + subtype->format_summarized->len + hostname->len + currenttime->len - 16;// minus 16 sprintf
+    len = (subtype->format_summarized_worker_item->len > subtype->format_summarized_worker_last_item->len) ? subtype->format_summarized_worker_item->len : subtype->format_summarized_worker_last_item->len;
+    len = ngx_http_push_stream_worker_processes * (2*NGX_INT_T_LEN + len - 5); //minus 5 sprintf
+    subscribers_by_workers = ngx_pcalloc(r->pool, len);
+    start = subscribers_by_workers;
+    for (i = 0; i < ngx_http_push_stream_worker_processes; i++) {
+        format = (i < ngx_http_push_stream_worker_processes - 1) ? subtype->format_summarized_worker_item : subtype->format_summarized_worker_last_item;
+        worker_data = shm_data->ipc + i;
+        start = ngx_sprintf(start, (char *) format->data, worker_data->pid, worker_data->subscribers);
+    }
+
+    len = 3*NGX_INT_T_LEN + subtype->format_summarized->len + hostname->len + currenttime->len + ngx_strlen(subscribers_by_workers) - 18;// minus 18 sprintf
 
     if ((b = ngx_create_temp_buf(r->pool, len)) == NULL) {
         ngx_log_error(NGX_LOG_ERR, r->connection->log, 0, "Failed to allocate response buffer.");
@@ -137,7 +150,7 @@ ngx_http_push_stream_send_response_all_channels_info_summarized(ngx_http_request
     }
 
     ngx_memset(b->start, '\0', len);
-    b->last = ngx_sprintf(b->start, (char *) subtype->format_summarized->data, hostname->data, currenttime->data, shm_data->channels, shm_data->broadcast_channels, shm_data->published_messages, shm_data->subscribers);
+    b->last = ngx_sprintf(b->start, (char *) subtype->format_summarized->data, hostname->data, currenttime->data, shm_data->channels, shm_data->broadcast_channels, shm_data->published_messages, shm_data->subscribers, subscribers_by_workers);
 
     return ngx_http_push_stream_send_buf_response(r, b, subtype->content_type, NGX_HTTP_OK);
 }

src/ngx_http_push_stream_module_ipc.c

@@ -99,12 +99,16 @@ ngx_http_push_stream_init_ipc_shm(ngx_int_t workers)
 
     if (data->ipc != NULL) {
         // already initialized... reset channel subscribers counters and census subscribers
-        ngx_http_push_stream_worker_data_t          *workers_data = data->ipc;
-        ngx_http_push_stream_worker_data_t          *thisworker_data = workers_data + ngx_process_slot;
+        ngx_http_push_stream_worker_data_t          *worker_data = NULL;
+        ngx_http_push_stream_worker_data_t          *thisworker_data = data->ipc + ngx_process_slot;
         ngx_http_push_stream_worker_subscriber_t    *sentinel = &thisworker_data->worker_subscribers_sentinel;
 
         ngx_queue_init(&sentinel->queue);
 
+        for(i=0; i<workers; i++) {
+            worker_data = data->ipc + i;
+            worker_data->subscribers = 0;
+        }
         data->subscribers = 0;
         ngx_http_push_stream_walk_rbtree(ngx_http_push_stream_reset_channel_subscribers_count_locked);
 
@@ -224,6 +228,7 @@ ngx_http_push_stream_census_worker_subscribers(void)
             cur_subscription->channel->subscribers++;
         }
         data->subscribers++;
+        thisworker_data->subscribers++;
     }
 
     ngx_shmtx_unlock(&shpool->mutex);

src/ngx_http_push_stream_module_setup.c

@@ -180,6 +180,10 @@ ngx_http_push_stream_init_worker(ngx_cycle_t *cycle)
         return NGX_ERROR;
     }
 
+    ngx_http_push_stream_shm_data_t        *data = (ngx_http_push_stream_shm_data_t *) ngx_http_push_stream_shm_zone->data;
+    ngx_http_push_stream_worker_data_t     *thisworker_data = data->ipc + ngx_process_slot;
+    thisworker_data->pid = ngx_pid;
+
     return ngx_http_push_stream_register_worker_message_handler(cycle);
 }
 

src/ngx_http_push_stream_module_subscriber.c

@@ -12,8 +12,8 @@ ngx_http_push_stream_subscriber_handler(ngx_http_request_t *r)
     ngx_pool_t                                     *temp_pool;
     ngx_uint_t                                      subscribed_channels_qtd = 0;
     ngx_uint_t                                      subscribed_broadcast_channels_qtd = 0;
-    ngx_http_push_stream_worker_data_t             *workers_data = ((ngx_http_push_stream_shm_data_t *) ngx_http_push_stream_shm_zone->data)->ipc;
-    ngx_http_push_stream_worker_data_t             *thisworker_data = workers_data + ngx_process_slot;
+    ngx_http_push_stream_shm_data_t                *data = (ngx_http_push_stream_shm_data_t *) ngx_http_push_stream_shm_zone->data;
+    ngx_http_push_stream_worker_data_t             *thisworker_data = data->ipc + ngx_process_slot;
     ngx_flag_t                                      is_broadcast_channel;
     ngx_http_push_stream_channel_t                 *channel;
 
@@ -140,7 +140,8 @@ ngx_http_push_stream_subscriber_handler(ngx_http_request_t *r)
     ngx_queue_insert_tail(&thisworker_data->worker_subscribers_sentinel.queue, &worker_subscriber->queue);
 
     // increment global subscribers count
-    ((ngx_http_push_stream_shm_data_t *) ngx_http_push_stream_shm_zone->data)->subscribers++;
+    data->subscribers++;
+    thisworker_data->subscribers++;
 
     ngx_shmtx_unlock(&shpool->mutex);
 

src/ngx_http_push_stream_module_utils.c

@@ -471,6 +471,7 @@ ngx_http_push_stream_worker_subscriber_cleanup(ngx_http_push_stream_worker_subsc
 {
     ngx_http_push_stream_subscription_t     *cur, *sentinel;
     ngx_slab_pool_t                         *shpool = (ngx_slab_pool_t *) ngx_http_push_stream_shm_zone->shm.addr;
+    ngx_http_push_stream_shm_data_t         *data = (ngx_http_push_stream_shm_data_t *) ngx_http_push_stream_shm_zone->data;
 
     ngx_shmtx_lock(&shpool->mutex);
     sentinel = &worker_subscriber->subscriptions_sentinel;
@@ -484,7 +485,8 @@ ngx_http_push_stream_worker_subscriber_cleanup(ngx_http_push_stream_worker_subsc
     ngx_queue_remove(&worker_subscriber->queue);
     ngx_queue_init(&worker_subscriber->queue);
     worker_subscriber->clndata->worker_subscriber = NULL;
-    ((ngx_http_push_stream_shm_data_t *) ngx_http_push_stream_shm_zone->data)->subscribers--;
+    data->subscribers--;
+    (data->ipc + ngx_process_slot)->subscribers--;
     ngx_shmtx_unlock(&shpool->mutex);
 }