Thrift Binary protocol improvements and application exceptions

Summary: Add application exceptions for unknown methods etc, and also let binary protocol support size limits on containers and strings

Reviewed By: aditya, xp-wayne


git-svn-id: https://svn.apache.org/repos/asf/incubator/thrift/trunk@665003 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/transport/TFileTransport.h b/lib/cpp/src/transport/TFileTransport.h
index 237234e..09cc531 100644
--- a/lib/cpp/src/transport/TFileTransport.h
+++ b/lib/cpp/src/transport/TFileTransport.h
@@ -336,7 +336,7 @@
 class TEOFException : public facebook::thrift::TTransportException {
  public:
   TEOFException():
-    facebook::thrift::TTransportException(TTX_EOF) {};
+    facebook::thrift::TTransportException(TTransportException::END_OF_FILE) {};
 };
 
 
diff --git a/lib/cpp/src/transport/TServerSocket.cpp b/lib/cpp/src/transport/TServerSocket.cpp
index 8d5e5e4..00860cc 100644
--- a/lib/cpp/src/transport/TServerSocket.cpp
+++ b/lib/cpp/src/transport/TServerSocket.cpp
@@ -42,7 +42,7 @@
   if (serverSocket_ == -1) {
     perror("TServerSocket::listen() socket");
     close();
-    throw TTransportException(TTX_NOT_OPEN, "Could not create server socket.");
+    throw TTransportException(TTransportException::NOT_OPEN, "Could not create server socket.");
   }
 
   // Set reusaddress to prevent 2MSL delay on accept
@@ -51,7 +51,7 @@
                        &one, sizeof(one))) {
     perror("TServerSocket::listen() SO_REUSEADDR");
     close();
-    throw TTransportException(TTX_NOT_OPEN, "Could not set SO_REUSEADDR");
+    throw TTransportException(TTransportException::NOT_OPEN, "Could not set SO_REUSEADDR");
   }
 
   // Defer accept
@@ -60,7 +60,7 @@
                        &one, sizeof(one))) {
     perror("TServerSocket::listen() TCP_DEFER_ACCEPT");
     close();
-    throw TTransportException(TTX_NOT_OPEN, "Could not set TCP_DEFER_ACCEPT");
+    throw TTransportException(TTransportException::NOT_OPEN, "Could not set TCP_DEFER_ACCEPT");
   }
   #endif // #ifdef TCP_DEFER_ACCEPT
 
@@ -70,7 +70,7 @@
                        &ling, sizeof(ling))) {
     close();
     perror("TServerSocket::listen() SO_LINGER");
-    throw TTransportException(TTX_NOT_OPEN, "Could not set SO_LINGER");
+    throw TTransportException(TTransportException::NOT_OPEN, "Could not set SO_LINGER");
   }
 
   // TCP Nodelay, speed over bandwidth
@@ -78,7 +78,7 @@
                        &one, sizeof(one))) {
     close();
     perror("setsockopt TCP_NODELAY");
-    throw TTransportException(TTX_NOT_OPEN, "Could not set TCP_NODELAY");
+    throw TTransportException(TTransportException::NOT_OPEN, "Could not set TCP_NODELAY");
   }
 
   // Bind to a port
@@ -92,14 +92,14 @@
     sprintf(errbuf, "TServerSocket::listen() BIND %d", port_);
     perror(errbuf);
     close();
-    throw TTransportException(TTX_NOT_OPEN, "Could not bind");
+    throw TTransportException(TTransportException::NOT_OPEN, "Could not bind");
   }
 
   // Call listen
   if (-1 == ::listen(serverSocket_, acceptBacklog_)) {
     perror("TServerSocket::listen() LISTEN");
     close();
-    throw TTransportException(TTX_NOT_OPEN, "Could not listen");
+    throw TTransportException(TTransportException::NOT_OPEN, "Could not listen");
   }
 
   // The socket is now listening!
@@ -107,7 +107,7 @@
 
 shared_ptr<TTransport> TServerSocket::acceptImpl() {
   if (serverSocket_ < 0) {
-    throw TTransportException(TTX_NOT_OPEN, "TServerSocket not listening");
+    throw TTransportException(TTransportException::NOT_OPEN, "TServerSocket not listening");
   }
 
   struct sockaddr_in clientAddress;
@@ -118,7 +118,7 @@
     
   if (clientSocket < 0) {
     perror("TServerSocket::accept()");
-    throw TTransportException(TTX_UNKNOWN, "ERROR:" + errno);
+    throw TTransportException(TTransportException::UNKNOWN, "ERROR:" + errno);
   }
   
   shared_ptr<TSocket> client(new TSocket(clientSocket));
diff --git a/lib/cpp/src/transport/TSocket.cpp b/lib/cpp/src/transport/TSocket.cpp
index 9df78a1..58bb9f4 100644
--- a/lib/cpp/src/transport/TSocket.cpp
+++ b/lib/cpp/src/transport/TSocket.cpp
@@ -92,7 +92,7 @@
   if (r == -1) {
     perror("TSocket::peek()");
     close();
-    throw TTransportException(TTX_UNKNOWN, "recv() ERROR:" + errno);
+    throw TTransportException(TTransportException::UNKNOWN, "recv() ERROR:" + errno);
   }
   return (r > 0);
 }
@@ -103,7 +103,7 @@
   if (socket_ == -1) {
     perror("TSocket::open() socket");
     close();
-    throw TTransportException(TTX_NOT_OPEN, "socket() ERROR:" + errno);
+    throw TTransportException(TTransportException::NOT_OPEN, "socket() ERROR:" + errno);
   }
 
   // Send timeout
@@ -135,7 +135,7 @@
     if (host_entry == NULL) {
       perror("TSocket: dns error: failed call to gethostbyname.");
       close();
-      throw TTransportException(TTX_NOT_OPEN, "gethostbyname() failed");
+      throw TTransportException(TTransportException::NOT_OPEN, "gethostbyname() failed");
     }
     
     addr.sin_port = htons(port_);
@@ -168,7 +168,7 @@
     char buff[1024];
     sprintf(buff, "TSocket::open() connect %s %d", host_.c_str(), port_);
     perror(buff);
-    throw TTransportException(TTX_NOT_OPEN, "open() ERROR: " + errno);
+    throw TTransportException(TTransportException::NOT_OPEN, "open() ERROR: " + errno);
   }
 
   fd_set fds;
@@ -185,22 +185,22 @@
     if (ret2 == -1) {
       close();
       perror("TSocket::open() getsockopt SO_ERROR");
-      throw TTransportException(TTX_NOT_OPEN, "open() ERROR: " + errno);
+      throw TTransportException(TTransportException::NOT_OPEN, "open() ERROR: " + errno);
     }
     if (val == 0) {
       goto done;
     }
     close();
     perror("TSocket::open() SO_ERROR was set");
-    throw TTransportException(TTX_NOT_OPEN, "open() ERROR: " + errno);
+    throw TTransportException(TTransportException::NOT_OPEN, "open() ERROR: " + errno);
   } else if (ret == 0) {
     close();
     perror("TSocket::open() timeed out");
-    throw TTransportException(TTX_NOT_OPEN, "open() ERROR: " + errno);   
+    throw TTransportException(TTransportException::NOT_OPEN, "open() ERROR: " + errno);   
   } else {
     close();
     perror("TSocket::open() select error");
-    throw TTransportException(TTX_NOT_OPEN, "open() ERROR: " + errno);
+    throw TTransportException(TTransportException::NOT_OPEN, "open() ERROR: " + errno);
   }
 
  done:
@@ -218,7 +218,7 @@
 
 uint32_t TSocket::read(uint8_t* buf, uint32_t len) {
   if (socket_ < 0) {
-    throw TTransportException(TTX_NOT_OPEN, "Called read on non-open socket");
+    throw TTransportException(TTransportException::NOT_OPEN, "Called read on non-open socket");
   }
 
   uint32_t retries = 0;
@@ -246,21 +246,21 @@
 
     // If we disconnect with no linger time
     if (errno == ECONNRESET) {
-      throw TTransportException(TTX_NOT_OPEN, "ECONNRESET");
+      throw TTransportException(TTransportException::NOT_OPEN, "ECONNRESET");
     }
     
     // This ish isn't open
     if (errno == ENOTCONN) {
-      throw TTransportException(TTX_NOT_OPEN, "ENOTCONN");
+      throw TTransportException(TTransportException::NOT_OPEN, "ENOTCONN");
     }
     
     // Timed out!
     if (errno == ETIMEDOUT) {
-      throw TTransportException(TTX_TIMED_OUT, "ETIMEDOUT");
+      throw TTransportException(TTransportException::TIMED_OUT, "ETIMEDOUT");
     }
     
     // Some other error, whatevz
-    throw TTransportException(TTX_UNKNOWN, "ERROR:" + errno);
+    throw TTransportException(TTransportException::UNKNOWN, "ERROR:" + errno);
   }
   
   // The remote host has closed the socket
@@ -275,7 +275,7 @@
 
 void TSocket::write(const uint8_t* buf, uint32_t len) {
   if (socket_ < 0) {
-    throw TTransportException(TTX_NOT_OPEN, "Called write on non-open socket");
+    throw TTransportException(TTransportException::NOT_OPEN, "Called write on non-open socket");
   }
 
   uint32_t sent = 0;
@@ -296,26 +296,26 @@
     if (b < 0) {
       if (errno == EPIPE) {
         close();
-        throw TTransportException(TTX_NOT_OPEN, "EPIPE");
+        throw TTransportException(TTransportException::NOT_OPEN, "EPIPE");
       }
 
       if (errno == ECONNRESET) {
         close();
-        throw TTransportException(TTX_NOT_OPEN, "ECONNRESET");
+        throw TTransportException(TTransportException::NOT_OPEN, "ECONNRESET");
       }
 
       if (errno == ENOTCONN) {
         close();
-        throw TTransportException(TTX_NOT_OPEN, "ENOTCONN");
+        throw TTransportException(TTransportException::NOT_OPEN, "ENOTCONN");
       }
 
       perror("TSocket::write() send < 0");
-      throw TTransportException(TTX_UNKNOWN, "ERROR:" + errno);
+      throw TTransportException(TTransportException::UNKNOWN, "ERROR:" + errno);
     }
     
     // Fail on blocked send
     if (b == 0) {
-      throw TTransportException(TTX_NOT_OPEN, "Socket send returned 0.");
+      throw TTransportException(TTransportException::NOT_OPEN, "Socket send returned 0.");
     }
     sent += b;
   }
diff --git a/lib/cpp/src/transport/TTransport.h b/lib/cpp/src/transport/TTransport.h
index 02dd89c..4f49d99 100644
--- a/lib/cpp/src/transport/TTransport.h
+++ b/lib/cpp/src/transport/TTransport.h
@@ -47,14 +47,14 @@
    * @throws TTransportException if opening failed
    */
   virtual void open() {
-    throw TTransportException(TTX_NOT_OPEN, "Cannot open base TTransport.");
+    throw TTransportException(TTransportException::NOT_OPEN, "Cannot open base TTransport.");
   }
 
   /**
    * Closes the transport.
    */
   virtual void close() {
-    throw TTransportException(TTX_NOT_OPEN, "Cannot close base TTransport.");
+    throw TTransportException(TTransportException::NOT_OPEN, "Cannot close base TTransport.");
   }
 
   /**
@@ -66,7 +66,7 @@
    * @throws TTransportException If an error occurs
    */
   virtual uint32_t read(uint8_t* buf, uint32_t len) {
-    throw TTransportException(TTX_NOT_OPEN, "Base TTransport cannot read.");
+    throw TTransportException(TTransportException::NOT_OPEN, "Base TTransport cannot read.");
   }
 
   /**
@@ -110,7 +110,7 @@
    * @throws TTransportException if an error occurs
    */
   virtual void write(const uint8_t* buf, uint32_t len) {
-    throw TTransportException(TTX_NOT_OPEN, "Base TTransport cannot write.");
+    throw TTransportException(TTransportException::NOT_OPEN, "Base TTransport cannot write.");
   }
 
   /**
diff --git a/lib/cpp/src/transport/TTransportException.h b/lib/cpp/src/transport/TTransportException.h
index 6dbfb13..3ab1d66 100644
--- a/lib/cpp/src/transport/TTransportException.h
+++ b/lib/cpp/src/transport/TTransportException.h
@@ -7,16 +7,6 @@
 namespace facebook { namespace thrift { namespace transport { 
 
 /**
- * Error codes for the various types of exceptions.
- */
-enum TTransportExceptionType {
-  TTX_UNKNOWN = 0,
-  TTX_NOT_OPEN = 1,
-  TTX_TIMED_OUT = 2,
-  TTX_EOF = 3,
-};
-
-/**
  * Class to encapsulate all the possible types of transport errors that may
  * occur in various transport systems. This provides a sort of generic
  * wrapper around the shitty UNIX E_ error codes that lets a common code
@@ -27,9 +17,19 @@
  */
 class TTransportException : public facebook::thrift::TException {
  public:
+  /**
+   * Error codes for the various types of exceptions.
+   */
+  enum TTransportExceptionType {
+    UNKNOWN = 0,
+    NOT_OPEN = 1,
+    TIMED_OUT = 2,
+    END_OF_FILE = 3,
+  };
+  
   TTransportException() :
     facebook::thrift::TException(),
-    type_(TTX_UNKNOWN) {}
+    type_(UNKNOWN) {}
 
   TTransportException(TTransportExceptionType type) :
     facebook::thrift::TException(), 
@@ -37,7 +37,7 @@
 
   TTransportException(const std::string message) :
     facebook::thrift::TException(message),
-    type_(TTX_UNKNOWN) {}
+    type_(UNKNOWN) {}
 
   TTransportException(TTransportExceptionType type, const std::string message) :
     facebook::thrift::TException(message),