Merge branch 'master' of https://github.com/divyagayathri-hcl/sonic-s…

…wss-common into zmq

common/Makefile.am

@@ -68,7 +68,18 @@ common_libswsscommon_la_SOURCES = \
     common/zmqclient.cpp             \
     common/zmqserver.cpp             \
     common/asyncdbupdater.cpp        \
-    common/redis_table_waiter.cpp
+    common/redis_table_waiter.cpp    \
+    common/interface.h               \
+    common/c-api/util.cpp                  \
+    common/c-api/dbconnector.cpp           \
+    common/c-api/consumerstatetable.cpp    \
+    common/c-api/producerstatetable.cpp    \
+    common/c-api/subscriberstatetable.cpp  \
+    common/c-api/zmqclient.cpp             \
+    common/c-api/zmqserver.cpp             \
+    common/c-api/zmqconsumerstatetable.cpp \
+    common/c-api/zmqproducerstatetable.cpp \
+    common/performancetimer.cpp
 
 common_libswsscommon_la_CXXFLAGS = $(DBGFLAGS) $(AM_CFLAGS) $(CFLAGS_COMMON) $(LIBNL_CFLAGS) $(CODE_COVERAGE_CXXFLAGS)
 common_libswsscommon_la_CPPFLAGS = $(DBGFLAGS) $(AM_CFLAGS) $(CFLAGS_COMMON) $(LIBNL_CPPFLAGS) $(CODE_COVERAGE_CPPFLAGS)

common/asyncdbupdater.cpp

@@ -30,6 +30,7 @@ AsyncDBUpdater::~AsyncDBUpdater()
     // notify db update thread exit
     m_dbUpdateDataNotifyCv.notify_all();
     m_dbUpdateThread->join();
+    SWSS_LOG_DEBUG("AsyncDBUpdater dtor tableName: %s", m_tableName.c_str());
 }
 
 void AsyncDBUpdater::update(std::shared_ptr<KeyOpFieldsValuesTuple> pkco)
@@ -61,16 +62,30 @@ void AsyncDBUpdater::dbUpdateThread()
     std::mutex cvMutex;
     std::unique_lock<std::mutex> cvLock(cvMutex);
 
-    while (m_runThread)
+    while (true)
     {
         size_t count;
         count = queueSize();
         if (count == 0)
         {
+            // Check if there still data in queue before exit
+            if (!m_runThread)
+            {
+                SWSS_LOG_NOTICE("dbUpdateThread for table: %s is exiting", m_tableName.c_str());
+                break;
+            }
+
             // when queue is empty, wait notification, when data come, continue to check queue size again
             m_dbUpdateDataNotifyCv.wait(cvLock);
             continue;
         }
+        else
+        {
+            if (!m_runThread)
+            {
+                SWSS_LOG_DEBUG("dbUpdateThread for table: %s still has %d records that need to be sent before exiting", m_tableName.c_str(), (int)count);
+            }
+        }
 
         for (size_t ie = 0; ie < count; ie++)
         {

common/binaryserializer.h

@@ -2,6 +2,8 @@
 #define __BINARY_SERIALIZER__
 
 #include "common/armhelper.h"
+#include "common/rediscommand.h"
+#include "common/table.h"
 
 #include <string>
 
@@ -11,6 +13,26 @@ namespace swss {
 
 class BinarySerializer {
 public:
+    static size_t serializedSize(const string &dbName, const string &tableName,
+                                 const vector<KeyOpFieldsValuesTuple> &kcos) {
+        size_t n = 0;
+        n += dbName.size() + sizeof(size_t);
+        n += tableName.size() + sizeof(size_t);
+
+        for (const KeyOpFieldsValuesTuple &kco : kcos) {
+            const vector<FieldValueTuple> &fvs = kfvFieldsValues(kco);
+            n += kfvKey(kco).size() + sizeof(size_t);
+            n += to_string(fvs.size()).size() + sizeof(size_t);
+
+            for (const FieldValueTuple &fv : fvs) {
+                n += fvField(fv).size() + sizeof(size_t);
+                n += fvValue(fv).size() + sizeof(size_t);
+            }
+        }
+
+        return n + sizeof(size_t);
+    }
+
     static size_t serializeBuffer(
         const char* buffer,
         const size_t size,
@@ -192,8 +214,8 @@ class BinarySerializer {
     {
         if ((size_t)(m_current_position - m_buffer + datalen + sizeof(size_t)) > m_buffer_size)
         {
-            SWSS_LOG_THROW("There are not enough buffer for binary serializer to serialize,\
-                             key count: %zu, data length %zu, buffer size: %zu",
+            SWSS_LOG_THROW("There are not enough buffer for binary serializer to serialize,\n"
+                           "  key count: %zu, data length %zu, buffer size: %zu",
                                                 m_kvp_count,
                                                 datalen,
                                                 m_buffer_size);

common/c-api/consumerstatetable.cpp

@@ -0,0 +1,45 @@
+#include <boost/numeric/conversion/cast.hpp>
+#include <cstdlib>
+#include <cstring>
+#include <deque>
+
+#include "../consumerstatetable.h"
+#include "../dbconnector.h"
+#include "../table.h"
+#include "consumerstatetable.h"
+#include "util.h"
+
+using namespace swss;
+using namespace std;
+using boost::numeric_cast;
+
+SWSSConsumerStateTable SWSSConsumerStateTable_new(SWSSDBConnector db, const char *tableName,
+                                                  const int32_t *p_popBatchSize,
+                                                  const int32_t *p_pri) {
+    int popBatchSize = p_popBatchSize ? numeric_cast<int>(*p_popBatchSize)
+                                      : TableConsumable::DEFAULT_POP_BATCH_SIZE;
+    int pri = p_pri ? numeric_cast<int>(*p_pri) : 0;
+    SWSSTry(return (SWSSConsumerStateTable) new ConsumerStateTable(
+        (DBConnector *)db, string(tableName), popBatchSize, pri));
+}
+
+void SWSSConsumerStateTable_free(SWSSConsumerStateTable tbl) {
+    SWSSTry(delete (ConsumerStateTable *)tbl);
+}
+
+SWSSKeyOpFieldValuesArray SWSSConsumerStateTable_pops(SWSSConsumerStateTable tbl) {
+    SWSSTry({
+        deque<KeyOpFieldsValuesTuple> vkco;
+        ((ConsumerStateTable *)tbl)->pops(vkco);
+        return makeKeyOpFieldValuesArray(vkco);
+    });
+}
+
+uint32_t SWSSConsumerStateTable_getFd(SWSSConsumerStateTable tbl) {
+    SWSSTry(return numeric_cast<uint32_t>(((ConsumerStateTable *)tbl)->getFd()));
+}
+
+SWSSSelectResult SWSSConsumerStateTable_readData(SWSSConsumerStateTable tbl, uint32_t timeout_ms,
+                                                 uint8_t interrupt_on_signal) {
+    SWSSTry(return selectOne((ConsumerStateTable *)tbl, timeout_ms, interrupt_on_signal));
+}

common/c-api/consumerstatetable.h

@@ -0,0 +1,39 @@
+#ifndef SWSS_COMMON_C_API_CONSUMERSTATETABLE_H
+#define SWSS_COMMON_C_API_CONSUMERSTATETABLE_H
+
+#include "dbconnector.h"
+#include "util.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+typedef struct SWSSConsumerStateTableOpaque *SWSSConsumerStateTable;
+
+// Pass NULL for popBatchSize and/or pri to use the default values
+SWSSConsumerStateTable SWSSConsumerStateTable_new(SWSSDBConnector db, const char *tableName,
+                                                  const int32_t *popBatchSize, const int32_t *pri);
+
+void SWSSConsumerStateTable_free(SWSSConsumerStateTable tbl);
+
+// Result array and all of its members must be freed using free()
+SWSSKeyOpFieldValuesArray SWSSConsumerStateTable_pops(SWSSConsumerStateTable tbl);
+
+// Return the underlying fd for polling/selecting on.
+// Callers must NOT read/write on fd, it may only be used for epoll or similar.
+// After the fd becomes readable, SWSSConsumerStateTable_readData must be used to
+// reset the fd and read data into internal data structures.
+uint32_t SWSSConsumerStateTable_getFd(SWSSConsumerStateTable tbl);
+
+// Block until data is available to read or until a timeout elapses.
+// A timeout of 0 means the call will return immediately.
+SWSSSelectResult SWSSConsumerStateTable_readData(SWSSConsumerStateTable tbl, uint32_t timeout_ms,
+                                                 uint8_t interrupt_on_signal);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

common/c-api/dbconnector.cpp

@@ -0,0 +1,93 @@
+#include <cstring>
+#include <string>
+#include <utility>
+
+#include "../dbconnector.h"
+#include "dbconnector.h"
+#include "util.h"
+
+using namespace swss;
+using namespace std;
+
+void SWSSSonicDBConfig_initialize(const char *path) {
+    SWSSTry(SonicDBConfig::initialize(path));
+}
+
+void SWSSSonicDBConfig_initializeGlobalConfig(const char *path) {
+    SWSSTry(SonicDBConfig::initializeGlobalConfig(path));
+}
+
+SWSSDBConnector SWSSDBConnector_new_tcp(int32_t dbId, const char *hostname, uint16_t port,
+                                        uint32_t timeout) {
+    SWSSTry(return (SWSSDBConnector) new DBConnector(dbId, string(hostname), port, timeout));
+}
+
+SWSSDBConnector SWSSDBConnector_new_unix(int32_t dbId, const char *sock_path, uint32_t timeout) {
+    SWSSTry(return (SWSSDBConnector) new DBConnector(dbId, string(sock_path), timeout));
+}
+
+SWSSDBConnector SWSSDBConnector_new_named(const char *dbName, uint32_t timeout_ms, uint8_t isTcpConn) {
+    SWSSTry(return (SWSSDBConnector) new DBConnector(string(dbName), timeout_ms, isTcpConn));
+}
+
+void SWSSDBConnector_free(SWSSDBConnector db) {
+    delete (DBConnector *)db;
+}
+
+int8_t SWSSDBConnector_del(SWSSDBConnector db, const char *key) {
+    SWSSTry(return ((DBConnector *)db)->del(string(key)) ? 1 : 0);
+}
+
+void SWSSDBConnector_set(SWSSDBConnector db, const char *key, SWSSStrRef value) {
+    SWSSTry(((DBConnector *)db)->set(string(key), takeStrRef(value)));
+}
+
+SWSSString SWSSDBConnector_get(SWSSDBConnector db, const char *key) {
+    SWSSTry({
+        shared_ptr<string> s = ((DBConnector *)db)->get(string(key));
+        return s ? makeString(move(*s)) : nullptr;
+    });
+}
+
+int8_t SWSSDBConnector_exists(SWSSDBConnector db, const char *key) {
+    SWSSTry(return ((DBConnector *)db)->exists(string(key)) ? 1 : 0);
+}
+
+int8_t SWSSDBConnector_hdel(SWSSDBConnector db, const char *key, const char *field) {
+    SWSSTry(return ((DBConnector *)db)->hdel(string(key), string(field)) ? 1 : 0);
+}
+
+void SWSSDBConnector_hset(SWSSDBConnector db, const char *key, const char *field,
+                          SWSSStrRef value) {
+    SWSSTry(((DBConnector *)db)->hset(string(key), string(field), takeStrRef(value)));
+}
+
+SWSSString SWSSDBConnector_hget(SWSSDBConnector db, const char *key, const char *field) {
+    SWSSTry({
+        shared_ptr<string> s = ((DBConnector *)db)->hget(string(key), string(field));
+        return s ? makeString(move(*s)) : nullptr;
+    });
+}
+
+SWSSFieldValueArray SWSSDBConnector_hgetall(SWSSDBConnector db, const char *key) {
+    SWSSTry({
+        auto map = ((DBConnector *)db)->hgetall(string(key));
+
+        // We can't move keys out of the map, we have to copy them, until C++17 map::extract so we
+        // copy them here into a vector to avoid needing an overload on makeFieldValueArray
+        vector<pair<string, string>> pairs;
+        pairs.reserve(map.size());
+        for (auto &pair : map)
+            pairs.push_back(make_pair(pair.first, move(pair.second)));
+
+        return makeFieldValueArray(std::move(pairs));
+    });
+}
+
+int8_t SWSSDBConnector_hexists(SWSSDBConnector db, const char *key, const char *field) {
+    SWSSTry(return ((DBConnector *)db)->hexists(string(key), string(field)) ? 1 : 0);
+}
+
+int8_t SWSSDBConnector_flushdb(SWSSDBConnector db) {
+    SWSSTry(return ((DBConnector *)db)->flushdb() ? 1 : 0);
+}

common/c-api/dbconnector.h

@@ -0,0 +1,64 @@
+#ifndef SWSS_COMMON_C_API_DBCONNECTOR_H
+#define SWSS_COMMON_C_API_DBCONNECTOR_H
+
+#include "util.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+void SWSSSonicDBConfig_initialize(const char *path);
+
+void SWSSSonicDBConfig_initializeGlobalConfig(const char *path);
+
+typedef struct SWSSDBConnectorOpaque *SWSSDBConnector;
+
+// Pass 0 to timeout for infinity
+SWSSDBConnector SWSSDBConnector_new_tcp(int32_t dbId, const char *hostname, uint16_t port,
+                                        uint32_t timeout_ms);
+
+// Pass 0 to timeout for infinity
+SWSSDBConnector SWSSDBConnector_new_unix(int32_t dbId, const char *sock_path, uint32_t timeout_ms);
+
+// Pass 0 to timeout for infinity
+SWSSDBConnector SWSSDBConnector_new_named(const char *dbName, uint32_t timeout_ms, uint8_t isTcpConn);
+
+void SWSSDBConnector_free(SWSSDBConnector db);
+
+// Returns 0 when key doesn't exist, 1 when key was deleted
+int8_t SWSSDBConnector_del(SWSSDBConnector db, const char *key);
+
+void SWSSDBConnector_set(SWSSDBConnector db, const char *key, SWSSStrRef value);
+
+// Returns NULL if key doesn't exist
+// Result must be freed using SWSSString_free()
+SWSSString SWSSDBConnector_get(SWSSDBConnector db, const char *key);
+
+// Returns 0 for false, 1 for true
+int8_t SWSSDBConnector_exists(SWSSDBConnector db, const char *key);
+
+// Returns 0 when key or field doesn't exist, 1 when field was deleted
+int8_t SWSSDBConnector_hdel(SWSSDBConnector db, const char *key, const char *field);
+
+void SWSSDBConnector_hset(SWSSDBConnector db, const char *key, const char *field, SWSSStrRef value);
+
+// Returns NULL if key or field doesn't exist
+// Result must be freed using SWSSString_free()
+SWSSString SWSSDBConnector_hget(SWSSDBConnector db, const char *key, const char *field);
+
+// Returns an empty map when the key doesn't exist
+// Result array and all of its elements must be freed using appropriate free functions
+SWSSFieldValueArray SWSSDBConnector_hgetall(SWSSDBConnector db, const char *key);
+
+// Returns 0 when key or field doesn't exist, 1 when field exists
+int8_t SWSSDBConnector_hexists(SWSSDBConnector db, const char *key, const char *field);
+
+// Returns 1 on success, 0 on failure
+int8_t SWSSDBConnector_flushdb(SWSSDBConnector db);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif