#36 configure connection timeout

Author: artpaul

driver/config.cpp

@@ -18,6 +18,7 @@ ConnInfo::ConnInfo()
     ZERO_FIELD(port);
     ZERO_FIELD(sslmode);
     ZERO_FIELD(onlyread);
+    ZERO_FIELD(timeout);
     ZERO_FIELD(show_system_tables);
     ZERO_FIELD(translation_dll);
     ZERO_FIELD(translation_option);
@@ -48,4 +49,7 @@ void getDSNinfo(ConnInfo * ci, bool overwrite)
 
     if (ci->password[0] == '\0' || overwrite)
         SQLGetPrivateProfileString(ci->dsn, INI_PASSWORD, TEXT(""), ci->password, sizeof(ci->password), ODBC_INI);
+
+    if (ci->timeout[0] == '\0' || overwrite)
+        SQLGetPrivateProfileString(ci->dsn, INI_TIMEOUT, TEXT("30"), ci->timeout, sizeof(ci->timeout), ODBC_INI);
 }

driver/config.h

@@ -14,6 +14,7 @@
 #define INI_PASSWORD        TEXT("Password")    /* Default Password */
 #define INI_PORT            TEXT("Port")        /* Port on which the ClickHouse is listening */
 #define INI_READONLY        TEXT("ReadOnly")    /* Database is read only */
+#define INI_TIMEOUT         TEXT("Timeout")
 
 #ifndef WIN32
 #   define ODBC_INI         ".odbc.ini"
@@ -39,6 +40,7 @@ struct ConnInfo
     TCHAR       port[SMALL_REGISTRY_LEN];
     TCHAR       sslmode[16];
     TCHAR       onlyread[SMALL_REGISTRY_LEN];
+    TCHAR       timeout[SMALL_REGISTRY_LEN];
     TCHAR       show_system_tables[SMALL_REGISTRY_LEN];
     TCHAR       translation_dll[MEDIUM_REGISTRY_LEN];
     TCHAR       translation_option[SMALL_REGISTRY_LEN];

driver/connection.cpp

@@ -46,7 +46,7 @@ void Connection::init()
     session.setHost(server);
     session.setPort(port);
     session.setKeepAlive(true);
-    session.setTimeout(Poco::Timespan(30, 0));
+    session.setTimeout(Poco::Timespan(timeout, 0));
     session.setKeepAliveTimeout(Poco::Timespan(86400, 0));
 }
 
@@ -126,6 +126,15 @@ void Connection::loadConfiguration()
         else
             throw std::runtime_error("Cannot parse port number.");
     }
+    if (timeout == 0)
+    {
+        const std::string timeout_string = stringFromTCHAR(ci.timeout);
+        if (!timeout_string.empty()) 
+        {
+            if (!Poco::NumberParser::tryParse(timeout_string, this->timeout))
+                throw std::runtime_error("Cannot parse connection timeout value.");
+        }
+    }
 
     if (server.empty())
         server = stringFromTCHAR(ci.server);
@@ -149,4 +158,6 @@ void Connection::setDefaults()
         user = "default";
     if (database.empty())
         database = "default";
+    if (timeout == 0)
+        timeout = 30;
 }

driver/connection.h

@@ -11,9 +11,10 @@ struct Connection
 
     std::string data_source;
     std::string server;
-    uint16_t port = 0;
     std::string user;
     std::string password;
+    uint16_t port = 0;
+    int timeout = 0;
 
     Poco::Net::HTTPClientSession session;
     DiagnosticRecord diagnostic_record;

driver/win/resource.h

@@ -39,6 +39,7 @@ namespace
 #define INI_PORT            TEXT("Port")        /* Port on which the ClickHouse is listening */
 #define INI_READONLY        TEXT("ReadOnly")    /* Database is read only */
 #define INI_PROTOCOL        TEXT("Protocol")    /* What protocol (6.2) */
+#define INI_TIMEOUT         TEXT("Timeout")
 #define INI_DSN             TEXT("ClickHouse")
 
 #define ABBR_PROTOCOL		TEXT("A1")
@@ -70,6 +71,7 @@ struct ConnInfo
     TCHAR		port[SMALL_REGISTRY_LEN];
     TCHAR		sslmode[16];
     TCHAR		onlyread[SMALL_REGISTRY_LEN];
+    TCHAR		timeout[SMALL_REGISTRY_LEN];
     TCHAR		fake_oid_index[SMALL_REGISTRY_LEN];
     TCHAR		show_oid_column[SMALL_REGISTRY_LEN];
     TCHAR		row_versioning[SMALL_REGISTRY_LEN];
@@ -113,7 +115,7 @@ struct SetupDialogData
 BOOL
 copyAttributes(ConnInfo *ci, LPCTSTR attribute, LPCTSTR value)
 {
-    BOOL	found = TRUE;
+    BOOL found = TRUE;
 
     if (stricmp(attribute, TEXT("DSN")) == 0)
         strcpy(ci->dsn, value);
@@ -142,6 +144,9 @@ copyAttributes(ConnInfo *ci, LPCTSTR attribute, LPCTSTR value)
     else if (stricmp(attribute, INI_READONLY) == 0 || stricmp(attribute, ABBR_READONLY) == 0)
         strcpy(ci->onlyread, value);
 
+    else if (stricmp(attribute, INI_TIMEOUT) == 0)
+        strcpy(ci->timeout, value);
+
     else
         found = FALSE;
 
@@ -218,6 +223,9 @@ void getDSNinfo(ConnInfo *ci, bool overwrite)
 
     if (ci->password[0] == '\0' || overwrite)
         SQLGetPrivateProfileString(DSN, INI_PASSWORD, TEXT(""), ci->password, sizeof(ci->password), ODBC_INI);
+
+    if (ci->timeout[0] == '\0' || overwrite)
+        SQLGetPrivateProfileString(DSN, INI_TIMEOUT, TEXT("30"), ci->timeout, sizeof(ci->timeout), ODBC_INI);
 }
 
 /*	This is for datasource based options only */
@@ -262,6 +270,11 @@ void writeDSNinfo(const ConnInfo * ci)
                                  INI_PASSWORD,
                                  ci->password,
                                  ODBC_INI);
+
+    SQLWritePrivateProfileString(DSN,
+                                 INI_TIMEOUT,
+                                 ci->timeout,
+                                 ODBC_INI);
 }
 
 static bool setDSNAttributes(HWND hwndParent, SetupDialogData * lpsetupdlg, DWORD * errcode)
@@ -386,6 +399,7 @@ INT_PTR	CALLBACK
             SetDlgItemText(hdlg, IDC_DATABASE, ci->database);
             SetDlgItemText(hdlg, IDC_USER, ci->username);
             SetDlgItemText(hdlg, IDC_PASSWORD, ci->password);
+            SetDlgItemText(hdlg, IDC_TIMEOUT, ci->timeout);
 
             return TRUE;		/* Focus was not set */
         }
@@ -404,6 +418,7 @@ INT_PTR	CALLBACK
                     GetDlgItemText(hdlg, IDC_DATABASE, ci->database, sizeof(ci->database));
                     GetDlgItemText(hdlg, IDC_USER, ci->username, sizeof(ci->username));
                     GetDlgItemText(hdlg, IDC_PASSWORD, ci->password, sizeof(ci->password));
+                    GetDlgItemText(hdlg, IDC_TIMEOUT, ci->timeout, sizeof(ci->timeout));
 
                     /* Return to caller */
                 case IDCANCEL:

driver/win/resource.rc

@@ -32,7 +32,7 @@
   <Product Id="$(var.PRODUCT_ID)"
            Name="$(var.PKGNAME)"
            Language="1033"
-           Version="1.0.0.20171031"
+           Version="1.0.0.20171107"
            Manufacturer="Yandex LLC"
            UpgradeCode="$(var.UPGRADE_ID)">
 

driver/win/setup.cpp

@@ -32,7 +32,7 @@
   <Product Id="$(var.PRODUCT_ID)"
            Name="$(var.PKGNAME)"
            Language="1033"
-           Version="1.0.0.20171031"
+           Version="1.0.0.20171107"
            Manufacturer="Yandex LLC"
            UpgradeCode="$(var.UPGRADE_ID)">