[trac749] refactor C++ utility library

configure.ac

@@ -677,6 +677,8 @@ AC_CONFIG_FILES([Makefile
                  src/lib/datasrc/Makefile
                  src/lib/datasrc/tests/Makefile
                  src/lib/xfr/Makefile
+                 src/lib/util/Makefile
+                 src/lib/util/tests/Makefile
                  src/lib/log/Makefile
                  src/lib/log/compiler/Makefile
                  src/lib/log/tests/Makefile

src/bin/auth/auth_srv.cc

@@ -31,7 +31,8 @@
 
 #include <exceptions/exceptions.h>
 
-#include <dns/buffer.h>
+#include <util/buffer.h>
+
 #include <dns/edns.h>
 #include <dns/exceptions.h>
 #include <dns/messagerenderer.h>
@@ -63,6 +64,7 @@ using namespace isc;
 using namespace isc::cc;
 using namespace isc::datasrc;
 using namespace isc::dns;
+using namespace isc::util;
 using namespace isc::auth;
 using namespace isc::dns::rdata;
 using namespace isc::data;

src/bin/auth/auth_srv.h

@@ -109,7 +109,7 @@ public:
     /// \throw isc::Unexpected Protocol type of \a message is unexpected
     void processMessage(const asiolink::IOMessage& io_message,
                         isc::dns::MessagePtr message,
-                        isc::dns::OutputBufferPtr buffer,
+                        isc::util::OutputBufferPtr buffer,
                         asiolink::DNSServer* server);
 
     /// \brief Set verbose flag

src/bin/auth/benchmarks/query_bench.cc

@@ -22,7 +22,7 @@
 #include <bench/benchmark.h>
 #include <bench/benchmark_util.h>
 
-#include <dns/buffer.h>
+#include <util/buffer.h>
 #include <dns/message.h>
 #include <dns/name.h>
 #include <dns/question.h>
@@ -41,6 +41,7 @@ using namespace isc;
 using namespace isc::data;
 using namespace isc::auth;
 using namespace isc::dns;
+using namespace isc::util;
 using namespace isc::xfr;
 using namespace isc::bench;
 using namespace asiolink;

src/bin/auth/main.cc

@@ -25,7 +25,8 @@
 
 #include <exceptions/exceptions.h>
 
-#include <dns/buffer.h>
+#include <util/buffer.h>
+
 #include <dns/message.h>
 #include <dns/messagerenderer.h>
 
@@ -49,6 +50,7 @@ using namespace isc::data;
 using namespace isc::cc;
 using namespace isc::config;
 using namespace isc::dns;
+using namespace isc::util;
 using namespace isc::xfr;
 using namespace asiolink;
 

src/bin/auth/tests/auth_srv_unittest.cc

@@ -41,6 +41,7 @@
 using namespace std;
 using namespace isc::cc;
 using namespace isc::dns;
+using namespace isc::util;
 using namespace isc::dns::rdata;
 using namespace isc::data;
 using namespace isc::xfr;

src/bin/host/host.cc

@@ -24,7 +24,8 @@
 #include <string>
 #include <iostream>
 
-#include <dns/buffer.h>
+#include <util/buffer.h>
+
 #include <dns/name.h>
 #include <dns/message.h>
 #include <dns/messagerenderer.h>
@@ -37,6 +38,7 @@
 
 using namespace std;
 using namespace isc::dns;
+using namespace isc::util;
 
 namespace {
 char* dns_type = NULL;    // not set, so A, AAAA, MX

src/bin/resolver/main.cc

@@ -29,7 +29,7 @@
 
 #include <exceptions/exceptions.h>
 
-#include <dns/buffer.h>
+#include <util/buffer.h>
 #include <dns/rcode.h>
 #include <dns/message.h>
 #include <dns/messagerenderer.h>

src/bin/resolver/resolver.cc

@@ -29,9 +29,10 @@
 
 #include <exceptions/exceptions.h>
 
+#include <util/buffer.h>
+
 #include <dns/opcode.h>
 #include <dns/rcode.h>
-#include <dns/buffer.h>
 #include <dns/exceptions.h>
 #include <dns/name.h>
 #include <dns/question.h>
@@ -50,6 +51,7 @@
 using namespace std;
 
 using namespace isc;
+using namespace isc::util;
 using namespace isc::dns;
 using namespace isc::data;
 using namespace isc::config;

src/bin/resolver/resolver.h

@@ -77,7 +77,7 @@ public:
     void processMessage(const asiolink::IOMessage& io_message,
                         isc::dns::MessagePtr query_message,
                         isc::dns::MessagePtr answer_message,
-                        isc::dns::OutputBufferPtr buffer,
+                        isc::util::OutputBufferPtr buffer,
                         asiolink::DNSServer* server);
 
     /// \brief Set and get the config session

src/lib/Makefile.am

-SUBDIRS = exceptions dns cc config python xfr bench log asiolink \
-          nsas cache resolve testutils datasrc server_common
+SUBDIRS = exceptions util dns cc config python xfr bench log \
+          asiolink nsas cache resolve testutils datasrc server_common

src/lib/asiolink/Makefile.am

@@ -13,7 +13,6 @@ CLEANFILES = *.gcno *.gcda
 # which would make the build fail with -Werror (our default setting).
 lib_LTLIBRARIES = libasiolink.la
 libasiolink_la_SOURCES  = asiolink.h
-libasiolink_la_SOURCES += asiolink_utilities.h
 libasiolink_la_SOURCES += asiodef.cc asiodef.h
 libasiolink_la_SOURCES += dns_answer.h
 libasiolink_la_SOURCES += dns_lookup.h
@@ -27,7 +26,6 @@ libasiolink_la_SOURCES += io_endpoint.cc io_endpoint.h
 libasiolink_la_SOURCES += io_error.h
 libasiolink_la_SOURCES += io_fetch.cc io_fetch.h
 libasiolink_la_SOURCES += io_message.h
-libasiolink_la_SOURCES += qid_gen.cc qid_gen.h
 libasiolink_la_SOURCES += io_service.h io_service.cc
 libasiolink_la_SOURCES += io_socket.h io_socket.cc
 libasiolink_la_SOURCES += simple_callback.h

src/lib/asiolink/asiolink_utilities.h

-// Copyright (C) 2011  Internet Systems Consortium, Inc. ("ISC")
-//
-// Permission to use, copy, modify, and/or distribute this software for any
-// purpose with or without fee is hereby granted, provided that the above
-// copyright notice and this permission notice appear in all copies.
-//
-// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
-// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
-// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
-// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
-// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-// PERFORMANCE OF THIS SOFTWARE.
-
-#ifndef __ASIOLINK_UTILITIES_H
-#define __ASIOLINK_UTILITIES_H
-
-#include <cstddef>
-
-namespace asiolink {
-
-/// \brief Read Unsigned 16-Bit Integer from Buffer
-///
-/// This is essentially a copy of the isc::dns::InputBuffer::readUint16.  It
-/// should really be moved into a separate library.
-///
-/// \param buffer Data buffer at least two bytes long of which the first two
-///        bytes are assumed to represent a 16-bit integer in network-byte
-///        order.
-///
-/// \return Value of 16-bit integer
-inline uint16_t
-readUint16(const void* buffer) {
-    const uint8_t* byte_buffer = static_cast<const uint8_t*>(buffer);
-
-    uint16_t result = (static_cast<uint16_t>(byte_buffer[0])) << 8;
-    result |= static_cast<uint16_t>(byte_buffer[1]);
-
-    return (result);
-}
-
-/// \brief Write Unisgned 16-Bit Integer to Buffer
-///
-/// This is essentially a copy of isc::dns::OutputBuffer::writeUint16.  It
-/// should really be moved into a separate library.
-///
-/// \param value 16-bit value to convert
-/// \param buffer Data buffer at least two bytes long into which the 16-bit
-///        value is written in network-byte order.
-
-inline void
-writeUint16(uint16_t value, void* buffer) {
-    uint8_t* byte_buffer = static_cast<uint8_t*>(buffer);
-
-    byte_buffer[0] = static_cast<uint8_t>((value & 0xff00U) >> 8);
-    byte_buffer[1] = static_cast<uint8_t>(value & 0x00ffU);
-}
-
-} // namespace asiolink
-
-#endif // __ASIOLINK_UTILITIES_H

src/lib/asiolink/dns_answer.h

@@ -66,7 +66,7 @@ public:
     virtual void operator()(const IOMessage& io_message,
                             isc::dns::MessagePtr query_message,
                             isc::dns::MessagePtr answer_message,
-                            isc::dns::OutputBufferPtr buffer) const = 0;
+                            isc::util::OutputBufferPtr buffer) const = 0;
 };
 
 }      // namespace asiolink

src/lib/asiolink/dns_lookup.h

@@ -17,7 +17,7 @@
 
 #include <asiolink/io_message.h>
 #include <asiolink/dns_server.h>
-#include <dns/buffer.h>
+#include <util/buffer.h>
 #include <dns/message.h>
 
 namespace asiolink {
@@ -70,7 +70,7 @@ public:
     virtual void operator()(const IOMessage& io_message,
                             isc::dns::MessagePtr message,
                             isc::dns::MessagePtr answer_message,
-                            isc::dns::OutputBufferPtr buffer,
+                            isc::util::OutputBufferPtr buffer,
                             DNSServer* server) const
     {
         (*self_)(io_message, message, answer_message, buffer, server);

src/lib/asiolink/io_asio_socket.h

@@ -26,7 +26,7 @@
 #include <exceptions/exceptions.h>
 #include <coroutine.h>
 
-#include <dns/buffer.h>
+#include <util/buffer.h>
 
 #include <asiolink/io_error.h>
 #include <asiolink/io_socket.h>
@@ -270,7 +270,7 @@ public:
     virtual bool processReceivedData(const void* staging, size_t length,
                                      size_t& cumulative, size_t& offset,
                                      size_t& expected,
-                                     isc::dns::OutputBufferPtr& outbuff) = 0;
+                                     isc::util::OutputBufferPtr& outbuff) = 0;
 
     /// \brief Cancel I/O On AsioSocket
     virtual void cancel() = 0;
@@ -372,7 +372,7 @@ public:
     virtual bool receiveComplete(const void* staging, size_t length,
                                  size_t& cumulative, size_t& offset,
                                  size_t& expected,
-                                 isc::dns::OutputBufferPtr& outbuff)
+                                 isc::util::OutputBufferPtr& outbuff)
     {
         return (true);
     }

src/lib/asiolink/io_fetch.cc

@@ -22,13 +22,16 @@
 #include <boost/scoped_ptr.hpp>
 #include <boost/date_time/posix_time/posix_time_types.hpp>
 
+#include <util/buffer.h>
+
 #include <dns/message.h>
 #include <dns/messagerenderer.h>
 #include <dns/opcode.h>
 #include <dns/rcode.h>
 #include <log/logger.h>
 
-#include <asiolink/qid_gen.h>
+#include <util/qid_gen.h>
+#include <util/qid_gen.h>
 
 #include <asio.hpp>
 #include <asio/deadline_timer.hpp>
@@ -43,12 +46,12 @@
 #include <asiolink/tcp_socket.h>
 #include <asiolink/udp_endpoint.h>
 #include <asiolink/udp_socket.h>
-#include <asiolink/qid_gen.h>
 
 #include <stdint.h>
 
 using namespace asio;
 using namespace isc::dns;
+using namespace isc::util;
 using namespace isc::log;
 using namespace std;
 
@@ -76,8 +79,8 @@ struct IOFetchData {
     boost::scoped_ptr<IOEndpoint> remote_snd;///< Where the fetch is sent
     boost::scoped_ptr<IOEndpoint> remote_rcv;///< Where the response came from
     isc::dns::Question          question;    ///< Question to be asked
-    isc::dns::OutputBufferPtr   msgbuf;      ///< Wire buffer for question
-    isc::dns::OutputBufferPtr   received;    ///< Received data put here
+    OutputBufferPtr   msgbuf;      ///< Wire buffer for question
+    OutputBufferPtr   received;    ///< Received data put here
     IOFetch::Callback*          callback;    ///< Called on I/O Completion
     asio::deadline_timer        timer;       ///< Timer to measure timeouts
     IOFetch::Protocol           protocol;    ///< Protocol being used
@@ -117,8 +120,7 @@ struct IOFetchData {
     /// TODO: May need to alter constructor (see comment 4 in Trac ticket #554)
     IOFetchData(IOFetch::Protocol proto, IOService& service,
         const isc::dns::Question& query, const IOAddress& address,
-        uint16_t port, isc::dns::OutputBufferPtr& buff, IOFetch::Callback* cb,
-        int wait)
+        uint16_t port, OutputBufferPtr& buff, IOFetch::Callback* cb, int wait)
         :
         socket((proto == IOFetch::UDP) ?
             static_cast<IOAsioSocket<IOFetch>*>(
@@ -135,7 +137,7 @@ struct IOFetchData {
             static_cast<IOEndpoint*>(new TCPEndpoint(address, port))
             ),
         question(query),
-        msgbuf(new isc::dns::OutputBuffer(512)),
+        msgbuf(new OutputBuffer(512)),
         received(buff),
 
         callback(cb),

src/lib/asiolink/io_fetch.h

@@ -25,7 +25,7 @@
 
 #include <asio/error_code.hpp>
 
-#include <dns/buffer.h>
+#include <util/buffer.h>
 #include <dns/question.h>
 
 namespace asiolink {
@@ -134,7 +134,7 @@ public:
     ///     -1 indicates no timeout.
     IOFetch(Protocol protocol, IOService& service,
         const isc::dns::Question& question, const IOAddress& address,
-        uint16_t port, isc::dns::OutputBufferPtr& buff, Callback* cb,
+        uint16_t port, isc::util::OutputBufferPtr& buff, Callback* cb,
         int wait = -1);
 
     /// \brief Return Current Protocol

src/lib/asiolink/qid_gen.cc

-// Copyright (C) 2011  Internet Systems Consortium, Inc. ("ISC")
-//
-// Permission to use, copy, modify, and/or distribute this software for any
-// purpose with or without fee is hereby granted, provided that the above
-// copyright notice and this permission notice appear in all copies.
-//
-// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
-// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
-// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
-// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
-// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-// PERFORMANCE OF THIS SOFTWARE.
-
-// qid_gen defines a generator for query id's
-//
-// We probably want to merge this with the weighted random in the nsas
-// (and other parts where we need randomness, perhaps another thing
-// for a general libutil?)
-
-#include <asiolink/qid_gen.h>
-
-#include <sys/time.h>
-
-namespace {
-    asiolink::QidGenerator qid_generator_instance;
-}
-
-namespace asiolink {
-
-QidGenerator&
-QidGenerator::getInstance() {
-    return (qid_generator_instance);
-}
-
-QidGenerator::QidGenerator() : dist_(0, 65535),
-                               vgen_(generator_, dist_)
-{
-    seed();
-}
-
-void
-QidGenerator::seed() {
-    struct timeval tv;
-    gettimeofday(&tv, 0);
-    generator_.seed((tv.tv_sec * 1000000) + tv.tv_usec);
-}
-
-isc::dns::qid_t
-QidGenerator::generateQid() {
-    return (vgen_());
-}
-
-} // namespace asiolink

src/lib/asiolink/qid_gen.h

-// Copyright (C) 2011  Internet Systems Consortium, Inc. ("ISC")
-//
-// Permission to use, copy, modify, and/or distribute this software for any
-// purpose with or without fee is hereby granted, provided that the above
-// copyright notice and this permission notice appear in all copies.
-//
-// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
-// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
-// AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
-// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
-// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
-// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
-// PERFORMANCE OF THIS SOFTWARE.
-
-// qid_gen defines a generator for query id's
-//
-// We probably want to merge this with the weighted random in the nsas
-// (and other parts where we need randomness, perhaps another thing
-// for a general libutil?)
-
-#ifndef __QID_GEN_H
-#define __QID_GEN_H
-
-#include <dns/message.h>
-#include <boost/random/mersenne_twister.hpp>
-#include <boost/random/uniform_int.hpp>
-#include <boost/random/variate_generator.hpp>
-
-
-namespace asiolink {
-
-/// This class generates Qids for outgoing queries
-///
-/// It is implemented as a singleton; the public way to access it
-/// is to call getInstance()->generateQid().
-///
-/// It automatically seeds it with the current time when it is first
-/// used.
-class QidGenerator {
-public:
-    /// \brief Returns the singleton instance of the QidGenerator
-    ///
-    /// Returns a reference to the singleton instance of the generator
-    static QidGenerator& getInstance();
-
-    /// \brief Default constructor
-    ///
-    /// It is recommended that getInstance is used rather than creating
-    /// separate instances of this class.
-    ///
-    /// The constructor automatically seeds the generator with the
-    /// current time.
-    QidGenerator();
-
-    /// Generate a Qid
-    ///
-    /// \return A random Qid
-    isc::dns::qid_t generateQid();
-
-    /// \brief Seeds the QidGenerator (based on the current time)
-    ///
-    /// This is automatically called by the constructor
-    void seed();
-
-private:
-    // "Mersenne Twister: A 623-dimensionally equidistributed
-    // uniform pseudo-random number generator", Makoto Matsumoto and
-    // Takuji Nishimura, ACM Transactions on Modeling and Computer
-    // Simulation: Special Issue on Uniform Random Number Generation,
-    // Vol. 8, No. 1, January 1998, pp. 3-30.
-    //
-    // mt19937 is an implementation of one of the pseudo random
-    // generators described in this paper.
-    boost::mt19937 generator_;
-
-    // For qid's we want a uniform distribution
-    boost::uniform_int<> dist_;
-
-    boost::variate_generator<boost::mt19937&, boost::uniform_int<> > vgen_;
-};
-
-
-} // namespace asiolink
-
-#endif // __QID_GEN_H

src/lib/asiolink/tcp_server.cc

@@ -23,6 +23,8 @@
 
 #include <log/dummylog.h>
 
+#include <util/buffer.h>
+
 #include <asio.hpp>
 #include <asiolink/dummy_io_cb.h>
 #include <asiolink/tcp_endpoint.h>
@@ -36,6 +38,7 @@ using asio::ip::tcp;
 
 using namespace std;
 using namespace isc::dns;
+using namespace isc::util;
 
 namespace asiolink {
 

src/lib/asiolink/tcp_server.h

@@ -91,7 +91,7 @@ private:
     boost::shared_ptr<asio::ip::tcp::socket> socket_;
 
     // The buffer into which the response is written
-    boost::shared_ptr<isc::dns::OutputBuffer> respbuf_;
+    boost::shared_ptr<isc::util::OutputBuffer> respbuf_;
 
     // \c IOMessage and \c Message objects to be passed to the
     // DNS lookup and answer providers

src/lib/asiolink/tcp_socket.h

@@ -33,9 +33,9 @@
 
 #include <config.h>
 
-#include <dns/buffer.h>
+#include <util/buffer.h>
+#include <util/asiolink_utilities.h>
 
-#include <asiolink/asiolink_utilities.h>
 #include <asiolink/io_asio_socket.h>
 #include <asiolink/io_endpoint.h>
 #include <asiolink/io_service.h>
@@ -155,7 +155,7 @@ public:
     virtual bool processReceivedData(const void* staging, size_t length,
                                      size_t& cumulative, size_t& offset,
                                      size_t& expected,
-                                     isc::dns::OutputBufferPtr& outbuff);
+                                     isc::util::OutputBufferPtr& outbuff);
 
     /// \brief Cancel I/O On Socket
     virtual void cancel();
@@ -185,7 +185,7 @@ private:
     // The option of sending the data in two operations, the count followed by
     // the data was discounted as that would lead to two callbacks which would
     // cause problems with the stackless coroutine code.
-    isc::dns::OutputBufferPtr   send_buffer_;   ///< Send buffer
+    isc::util::OutputBufferPtr   send_buffer_;   ///< Send buffer
 };
 
 // Constructor - caller manages socket
@@ -268,7 +268,7 @@ TCPSocket<C>::asyncSend(const void* data, size_t length,
             uint16_t count = boost::numeric_cast<uint16_t>(length);
 
             // Copy data into a buffer preceded by the count field.
-            send_buffer_.reset(new isc::dns::OutputBuffer(length + 2));
+            send_buffer_.reset(new isc::util::OutputBuffer(length + 2));
             send_buffer_->writeUint16(count);
             send_buffer_->writeData(data, length);
 
@@ -333,7 +333,7 @@ template <typename C> bool
 TCPSocket<C>::processReceivedData(const void* staging, size_t length,
                                   size_t& cumulative, size_t& offset,
                                   size_t& expected,
-                                  isc::dns::OutputBufferPtr& outbuff)
+                                  isc::util::OutputBufferPtr& outbuff)
 {
     // Point to the data in the staging buffer and note how much there is.
     const uint8_t* data = static_cast<const uint8_t*>(staging);
@@ -358,7 +358,7 @@ TCPSocket<C>::processReceivedData(const void* staging, size_t length,
         }
 
         // Have enough data to interpret the packet count, so do so now.
-        expected = readUint16(data);
+        expected = isc::util::readUint16(data);
 
         // We have two bytes less of data to process.  Point to the start of the