refactor: do some internal refactor.

source/common/src/tmisce.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.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 <http://www.gnu.org/licenses/>.
+ */
+
+#define _DEFAULT_SOURCE
+#include "tdatablock.h"
+#include "tglobal.h"
+#include "tlog.h"
+#include "tname.h"
+
+int32_t taosGetFqdnPortFromEp(const char* ep, SEp* pEp) {
+  pEp->port = 0;
+  strcpy(pEp->fqdn, ep);
+
+  char* temp = strchr(pEp->fqdn, ':');
+  if (temp) {
+    *temp = 0;
+    pEp->port = atoi(temp + 1);
+  }
+
+  if (pEp->port == 0) {
+    pEp->port = tsServerPort;
+  }
+
+  return 0;
+}
+
+void addEpIntoEpSet(SEpSet* pEpSet, const char* fqdn, uint16_t port) {
+  if (pEpSet == NULL || fqdn == NULL || strlen(fqdn) == 0) {
+    return;
+  }
+
+  int32_t index = pEpSet->numOfEps;
+  tstrncpy(pEpSet->eps[index].fqdn, fqdn, tListLen(pEpSet->eps[index].fqdn));
+  pEpSet->eps[index].port = port;
+  pEpSet->numOfEps += 1;
+}
+
+bool isEpsetEqual(const SEpSet* s1, const SEpSet* s2) {
+  if (s1->numOfEps != s2->numOfEps || s1->inUse != s2->inUse) {
+    return false;
+  }
+
+  for (int32_t i = 0; i < s1->numOfEps; i++) {
+    if (s1->eps[i].port != s2->eps[i].port || strncmp(s1->eps[i].fqdn, s2->eps[i].fqdn, TSDB_FQDN_LEN) != 0)
+      return false;
+  }
+  return true;
+}
+
+void updateEpSet_s(SCorEpSet* pEpSet, SEpSet* pNewEpSet) {
+  taosCorBeginWrite(&pEpSet->version);
+    pEpSet->epSet = *pNewEpSet;
+  taosCorEndWrite(&pEpSet->version);
+}
+
+SEpSet getEpSet_s(SCorEpSet* pEpSet) {
+  SEpSet ep = {0};
+  taosCorBeginRead(&pEpSet->version);
+    ep = pEpSet->epSet;
+  taosCorEndRead(&pEpSet->version);
+
+  return ep;
+}
+
+