idempotency seq_id includes server id and channel id for global unique

src/idempotency/client/client_channel.h

@@ -46,7 +46,8 @@ struct idempotency_client_channel *idempotency_client_channel_get(
 static inline uint64_t idempotency_client_channel_next_seq_id(
         struct idempotency_client_channel *channel)
 {
-    return __sync_add_and_fetch(&channel->next_req_id, 1);
+    return SF_IDEMPOTENCY_NEXT_REQ_ID(channel->server_id,
+            channel->id, FC_ATOMIC_INC(channel->next_seq));
 }
 
 int idempotency_client_channel_push(struct idempotency_client_channel *channel,

src/idempotency/client/client_types.h

@@ -21,6 +21,7 @@
 #include "fastcommon/fast_mblock.h"
 #include "fastcommon/fc_list.h"
 #include "fastcommon/fc_queue.h"
+#include "sf/idempotency/common/idempotency_types.h"
 
 typedef struct idempotency_client_config {
     bool enabled;
@@ -40,11 +41,12 @@ typedef struct idempotency_client_channel {
     volatile char in_ioevent;
     volatile char established;
     int buffer_size;  //the min task size of the server and mine
+    uint32_t server_id;
+    volatile uint32_t next_seq;
     time_t last_connect_time;  //for connect frequency control
     time_t last_pkg_time;      //last communication time
     time_t last_report_time;   //last report time for rpc receipt
     pthread_lock_cond_pair_t lc_pair;  //for channel valid check and notify
-    volatile uint64_t next_req_id;
     struct fast_mblock_man receipt_allocator;
     struct fast_task_info *task;
     struct fc_queue queue;

src/idempotency/client/receipt_handler.c

@@ -271,10 +271,12 @@ static int deal_setup_channel_response(struct fast_task_info *task)
         return 0;
     }
 
-    resp = (SFProtoSetupChannelResp *)(task->data + sizeof(SFCommonProtoHeader));
+    resp = (SFProtoSetupChannelResp *)(task->data +
+            sizeof(SFCommonProtoHeader));
     channel_id = buff2int(resp->channel_id);
     channel_key = buff2int(resp->key);
     buffer_size = buff2int(resp->buffer_size);
+    channel->server_id = buff2int(resp->server_id);
     idempotency_client_channel_set_id_key(channel, channel_id, channel_key);
     if (__sync_bool_compare_and_swap(&channel->established, 0, 1)) {
         thread_ctx = (IdempotencyReceiptThreadContext *)task->thread_data->arg;

src/idempotency/common/idempotency_types.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2020 YuQing <384681@qq.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+
+#ifndef _IDEMPOTENCY_COMMON_TYPES_H
+#define _IDEMPOTENCY_COMMON_TYPES_H
+
+#include "fastcommon/common_define.h"
+
+#define SF_IDEMPOTENCY_CHANNEL_ID_BITS    16
+#define SF_IDEMPOTENCY_REQUEST_ID_BITS    (64 - SF_IDEMPOTENCY_CHANNEL_ID_BITS)
+#define SF_IDEMPOTENCY_MAX_CHANNEL_COUNT  ((1 << SF_IDEMPOTENCY_CHANNEL_ID_BITS) - 1)
+#define SF_IDEMPOTENCY_MAX_CHANNEL_ID     SF_IDEMPOTENCY_MAX_CHANNEL_COUNT
+
+#define SF_IDEMPOTENCY_SERVER_ID_OFFSET   48
+#define SF_IDEMPOTENCY_CHANNEL_ID_OFFSET  32
+
+#define SF_IDEMPOTENCY_NEXT_REQ_ID(server_id, channel_id, seq)    \
+    (((int64_t)server_id)  << SF_IDEMPOTENCY_SERVER_ID_OFFSET)  | \
+    (((int64_t)channel_id) << SF_IDEMPOTENCY_CHANNEL_ID_OFFSET) | \
+    (int64_t)seq
+
+#define SF_IDEMPOTENCY_EXTRACT_SERVER_ID(req_id) \
+    (int)((req_id >> SF_IDEMPOTENCY_SERVER_ID_OFFSET) & 0xFFFF)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/idempotency/server/server_handler.c

@@ -41,8 +41,8 @@
     (task->length - sizeof(SFCommonProtoHeader))
 
 int sf_server_deal_setup_channel(struct fast_task_info *task,
-        int *task_type, IdempotencyChannel **channel,
-        SFResponseInfo *response)
+        int *task_type, const int server_id, IdempotencyChannel
+        **channel, SFResponseInfo *response)
 {
     int result;
     SFProtoSetupChannelReq *req;
@@ -74,13 +74,13 @@ int sf_server_deal_setup_channel(struct fast_task_info *task,
                 "alloc channel fail, hint channel id: %d", channel_id);
         return ENOMEM;
     }
-
     *task_type = SF_SERVER_TASK_TYPE_CHANNEL_HOLDER;
 
     resp = (SFProtoSetupChannelResp *)(task->data +
             sizeof(SFCommonProtoHeader));
     int2buff((*channel)->id, resp->channel_id);
     int2buff((*channel)->key, resp->key);
+    int2buff(server_id, resp->server_id);
     int2buff(task->size, resp->buffer_size);
     response->header.body_len = sizeof(SFProtoSetupChannelResp);
     return 0;

src/idempotency/server/server_handler.h

@@ -25,8 +25,8 @@ extern "C" {
 #endif
 
 int sf_server_deal_setup_channel(struct fast_task_info *task,
-        int *task_type, IdempotencyChannel **channel,
-        SFResponseInfo *response);
+        int *task_type, const int server_id, IdempotencyChannel
+        **channel, SFResponseInfo *response);
 
 int sf_server_deal_close_channel(struct fast_task_info *task,
         int *task_type, IdempotencyChannel **channel,

src/idempotency/server/server_types.h

@@ -19,11 +19,7 @@
 
 #include "fastcommon/fast_mblock.h"
 #include "fastcommon/fast_timer.h"
-
-#define SF_IDEMPOTENCY_CHANNEL_ID_BITS    16
-#define SF_IDEMPOTENCY_REQUEST_ID_BITS    (64 - SF_IDEMPOTENCY_CHANNEL_ID_BITS)
-#define SF_IDEMPOTENCY_MAX_CHANNEL_COUNT  ((1 << SF_IDEMPOTENCY_CHANNEL_ID_BITS) - 1)
-#define SF_IDEMPOTENCY_MAX_CHANNEL_ID     SF_IDEMPOTENCY_MAX_CHANNEL_COUNT
+#include "sf/idempotency/common/idempotency_types.h"
 
 #define SF_IDEMPOTENCY_DEFAULT_REQUEST_HINT_CAPACITY      1023
 #define SF_IDEMPOTENCY_DEFAULT_CHANNEL_RESERVE_INTERVAL    600

src/sf_proto.h

@@ -176,8 +176,8 @@ typedef struct sf_proto_setup_channel_req {
 typedef struct sf_proto_setup_channel_resp {
     char channel_id[4];
     char key[4];
+    char server_id[4];
     char buffer_size[4];
-    char padding[4];
 } SFProtoSetupChannelResp;
 
 typedef struct sf_proto_rebind_channel_req {