ProcessForker can now reply to requests including replying with an error

castor/messages/CMakeLists.txt

@@ -2,11 +2,13 @@ add_library(castormessages SHARED
   ForkCleaner.pb.cc
   ForkDataTransfer.pb.cc
   ForkLabel.pb.cc
+  ForkSucceeded.pb.cc
   Header.pb.cc
   Heartbeat.pb.cc
   messages.cpp
   NotifyDrive.pb.cc
   ReplyContainer.cpp
+  Status.pb.cc
   StopProcessForker.pb.cc
   TapeserverProxy.cpp
   TapeserverProxyDummy.cpp

castor/messages/ForkSucceeded.pb.cc

+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+
+#define INTERNAL_SUPPRESS_PROTOBUF_FIELD_DEPRECATION
+#include "ForkSucceeded.pb.h"
+#include <google/protobuf/stubs/once.h>
+#include <google/protobuf/io/coded_stream.h>
+#include <google/protobuf/wire_format_lite_inl.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/reflection_ops.h>
+#include <google/protobuf/wire_format.h>
+// @@protoc_insertion_point(includes)
+
+namespace castor {
+namespace messages {
+
+namespace {
+
+const ::google::protobuf::Descriptor* ForkSucceeded_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  ForkSucceeded_reflection_ = NULL;
+
+}  // namespace
+
+
+void protobuf_AssignDesc_ForkSucceeded_2eproto() {
+  protobuf_AddDesc_ForkSucceeded_2eproto();
+  const ::google::protobuf::FileDescriptor* file =
+    ::google::protobuf::DescriptorPool::generated_pool()->FindFileByName(
+      "ForkSucceeded.proto");
+  GOOGLE_CHECK(file != NULL);
+  ForkSucceeded_descriptor_ = file->message_type(0);
+  static const int ForkSucceeded_offsets_[1] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(ForkSucceeded, pid_),
+  };
+  ForkSucceeded_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      ForkSucceeded_descriptor_,
+      ForkSucceeded::default_instance_,
+      ForkSucceeded_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(ForkSucceeded, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(ForkSucceeded, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(ForkSucceeded));
+}
+
+namespace {
+
+GOOGLE_PROTOBUF_DECLARE_ONCE(protobuf_AssignDescriptors_once_);
+inline void protobuf_AssignDescriptorsOnce() {
+  ::google::protobuf::GoogleOnceInit(&protobuf_AssignDescriptors_once_,
+                 &protobuf_AssignDesc_ForkSucceeded_2eproto);
+}
+
+void protobuf_RegisterTypes(const ::std::string&) {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    ForkSucceeded_descriptor_, &ForkSucceeded::default_instance());
+}
+
+}  // namespace
+
+void protobuf_ShutdownFile_ForkSucceeded_2eproto() {
+  delete ForkSucceeded::default_instance_;
+  delete ForkSucceeded_reflection_;
+}
+
+void protobuf_AddDesc_ForkSucceeded_2eproto() {
+  static bool already_here = false;
+  if (already_here) return;
+  already_here = true;
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+  ::google::protobuf::DescriptorPool::InternalAddGeneratedFile(
+    "\n\023ForkSucceeded.proto\022\017castor.messages\"\034"
+    "\n\rForkSucceeded\022\013\n\003pid\030\001 \002(\004", 68);
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedFile(
+    "ForkSucceeded.proto", &protobuf_RegisterTypes);
+  ForkSucceeded::default_instance_ = new ForkSucceeded();
+  ForkSucceeded::default_instance_->InitAsDefaultInstance();
+  ::google::protobuf::internal::OnShutdown(&protobuf_ShutdownFile_ForkSucceeded_2eproto);
+}
+
+// Force AddDescriptors() to be called at static initialization time.
+struct StaticDescriptorInitializer_ForkSucceeded_2eproto {
+  StaticDescriptorInitializer_ForkSucceeded_2eproto() {
+    protobuf_AddDesc_ForkSucceeded_2eproto();
+  }
+} static_descriptor_initializer_ForkSucceeded_2eproto_;
+
+
+// ===================================================================
+
+#ifndef _MSC_VER
+const int ForkSucceeded::kPidFieldNumber;
+#endif  // !_MSC_VER
+
+ForkSucceeded::ForkSucceeded()
+  : ::google::protobuf::Message() {
+  SharedCtor();
+}
+
+void ForkSucceeded::InitAsDefaultInstance() {
+}
+
+ForkSucceeded::ForkSucceeded(const ForkSucceeded& from)
+  : ::google::protobuf::Message() {
+  SharedCtor();
+  MergeFrom(from);
+}
+
+void ForkSucceeded::SharedCtor() {
+  _cached_size_ = 0;
+  pid_ = GOOGLE_ULONGLONG(0);
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+}
+
+ForkSucceeded::~ForkSucceeded() {
+  SharedDtor();
+}
+
+void ForkSucceeded::SharedDtor() {
+  if (this != default_instance_) {
+  }
+}
+
+void ForkSucceeded::SetCachedSize(int size) const {
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+}
+const ::google::protobuf::Descriptor* ForkSucceeded::descriptor() {
+  protobuf_AssignDescriptorsOnce();
+  return ForkSucceeded_descriptor_;
+}
+
+const ForkSucceeded& ForkSucceeded::default_instance() {
+  if (default_instance_ == NULL) protobuf_AddDesc_ForkSucceeded_2eproto();  return *default_instance_;
+}
+
+ForkSucceeded* ForkSucceeded::default_instance_ = NULL;
+
+ForkSucceeded* ForkSucceeded::New() const {
+  return new ForkSucceeded;
+}
+
+void ForkSucceeded::Clear() {
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    pid_ = GOOGLE_ULONGLONG(0);
+  }
+  ::memset(_has_bits_, 0, sizeof(_has_bits_));
+  mutable_unknown_fields()->Clear();
+}
+
+bool ForkSucceeded::MergePartialFromCodedStream(
+    ::google::protobuf::io::CodedInputStream* input) {
+#define DO_(EXPRESSION) if (!(EXPRESSION)) return false
+  ::google::protobuf::uint32 tag;
+  while ((tag = input->ReadTag()) != 0) {
+    switch (::google::protobuf::internal::WireFormatLite::GetTagFieldNumber(tag)) {
+      // required uint64 pid = 1;
+      case 1: {
+        if (::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_VARINT) {
+          DO_((::google::protobuf::internal::WireFormatLite::ReadPrimitive<
+                   ::google::protobuf::uint64, ::google::protobuf::internal::WireFormatLite::TYPE_UINT64>(
+                 input, &pid_)));
+          _set_bit(0);
+        } else {
+          goto handle_uninterpreted;
+        }
+        if (input->ExpectAtEnd()) return true;
+        break;
+      }
+      
+      default: {
+      handle_uninterpreted:
+        if (::google::protobuf::internal::WireFormatLite::GetTagWireType(tag) ==
+            ::google::protobuf::internal::WireFormatLite::WIRETYPE_END_GROUP) {
+          return true;
+        }
+        DO_(::google::protobuf::internal::WireFormat::SkipField(
+              input, tag, mutable_unknown_fields()));
+        break;
+      }
+    }
+  }
+  return true;
+#undef DO_
+}
+
+void ForkSucceeded::SerializeWithCachedSizes(
+    ::google::protobuf::io::CodedOutputStream* output) const {
+  // required uint64 pid = 1;
+  if (_has_bit(0)) {
+    ::google::protobuf::internal::WireFormatLite::WriteUInt64(1, this->pid(), output);
+  }
+  
+  if (!unknown_fields().empty()) {
+    ::google::protobuf::internal::WireFormat::SerializeUnknownFields(
+        unknown_fields(), output);
+  }
+}
+
+::google::protobuf::uint8* ForkSucceeded::SerializeWithCachedSizesToArray(
+    ::google::protobuf::uint8* target) const {
+  // required uint64 pid = 1;
+  if (_has_bit(0)) {
+    target = ::google::protobuf::internal::WireFormatLite::WriteUInt64ToArray(1, this->pid(), target);
+  }
+  
+  if (!unknown_fields().empty()) {
+    target = ::google::protobuf::internal::WireFormat::SerializeUnknownFieldsToArray(
+        unknown_fields(), target);
+  }
+  return target;
+}
+
+int ForkSucceeded::ByteSize() const {
+  int total_size = 0;
+  
+  if (_has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    // required uint64 pid = 1;
+    if (has_pid()) {
+      total_size += 1 +
+        ::google::protobuf::internal::WireFormatLite::UInt64Size(
+          this->pid());
+    }
+    
+  }
+  if (!unknown_fields().empty()) {
+    total_size +=
+      ::google::protobuf::internal::WireFormat::ComputeUnknownFieldsSize(
+        unknown_fields());
+  }
+  GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN();
+  _cached_size_ = total_size;
+  GOOGLE_SAFE_CONCURRENT_WRITES_END();
+  return total_size;
+}
+
+void ForkSucceeded::MergeFrom(const ::google::protobuf::Message& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  const ForkSucceeded* source =
+    ::google::protobuf::internal::dynamic_cast_if_available<const ForkSucceeded*>(
+      &from);
+  if (source == NULL) {
+    ::google::protobuf::internal::ReflectionOps::Merge(from, this);
+  } else {
+    MergeFrom(*source);
+  }
+}
+
+void ForkSucceeded::MergeFrom(const ForkSucceeded& from) {
+  GOOGLE_CHECK_NE(&from, this);
+  if (from._has_bits_[0 / 32] & (0xffu << (0 % 32))) {
+    if (from._has_bit(0)) {
+      set_pid(from.pid());
+    }
+  }
+  mutable_unknown_fields()->MergeFrom(from.unknown_fields());
+}
+
+void ForkSucceeded::CopyFrom(const ::google::protobuf::Message& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+void ForkSucceeded::CopyFrom(const ForkSucceeded& from) {
+  if (&from == this) return;
+  Clear();
+  MergeFrom(from);
+}
+
+bool ForkSucceeded::IsInitialized() const {
+  if ((_has_bits_[0] & 0x00000001) != 0x00000001) return false;
+  
+  return true;
+}
+
+void ForkSucceeded::Swap(ForkSucceeded* other) {
+  if (other != this) {
+    std::swap(pid_, other->pid_);
+    std::swap(_has_bits_[0], other->_has_bits_[0]);
+    _unknown_fields_.Swap(&other->_unknown_fields_);
+    std::swap(_cached_size_, other->_cached_size_);
+  }
+}
+
+::google::protobuf::Metadata ForkSucceeded::GetMetadata() const {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::Metadata metadata;
+  metadata.descriptor = ForkSucceeded_descriptor_;
+  metadata.reflection = ForkSucceeded_reflection_;
+  return metadata;
+}
+
+
+// @@protoc_insertion_point(namespace_scope)
+
+}  // namespace messages
+}  // namespace castor
+
+// @@protoc_insertion_point(global_scope)

castor/messages/ForkSucceeded.pb.h

+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+// source: ForkSucceeded.proto
+
+#ifndef PROTOBUF_ForkSucceeded_2eproto__INCLUDED
+#define PROTOBUF_ForkSucceeded_2eproto__INCLUDED
+
+#include <string>
+
+#include <google/protobuf/stubs/common.h>
+
+#if GOOGLE_PROTOBUF_VERSION < 2003000
+#error This file was generated by a newer version of protoc which is
+#error incompatible with your Protocol Buffer headers.  Please update
+#error your headers.
+#endif
+#if 2003000 < GOOGLE_PROTOBUF_MIN_PROTOC_VERSION
+#error This file was generated by an older version of protoc which is
+#error incompatible with your Protocol Buffer headers.  Please
+#error regenerate this file with a newer version of protoc.
+#endif
+
+#include <google/protobuf/generated_message_util.h>
+#include <google/protobuf/repeated_field.h>
+#include <google/protobuf/extension_set.h>
+#include <google/protobuf/generated_message_reflection.h>
+// @@protoc_insertion_point(includes)
+
+namespace castor {
+namespace messages {
+
+// Internal implementation detail -- do not call these.
+void  protobuf_AddDesc_ForkSucceeded_2eproto();
+void protobuf_AssignDesc_ForkSucceeded_2eproto();
+void protobuf_ShutdownFile_ForkSucceeded_2eproto();
+
+class ForkSucceeded;
+
+// ===================================================================
+
+class ForkSucceeded : public ::google::protobuf::Message {
+ public:
+  ForkSucceeded();
+  virtual ~ForkSucceeded();
+  
+  ForkSucceeded(const ForkSucceeded& from);
+  
+  inline ForkSucceeded& operator=(const ForkSucceeded& from) {
+    CopyFrom(from);
+    return *this;
+  }
+  
+  inline const ::google::protobuf::UnknownFieldSet& unknown_fields() const {
+    return _unknown_fields_;
+  }
+  
+  inline ::google::protobuf::UnknownFieldSet* mutable_unknown_fields() {
+    return &_unknown_fields_;
+  }
+  
+  static const ::google::protobuf::Descriptor* descriptor();
+  static const ForkSucceeded& default_instance();
+  
+  void Swap(ForkSucceeded* other);
+  
+  // implements Message ----------------------------------------------
+  
+  ForkSucceeded* New() const;
+  void CopyFrom(const ::google::protobuf::Message& from);
+  void MergeFrom(const ::google::protobuf::Message& from);
+  void CopyFrom(const ForkSucceeded& from);
+  void MergeFrom(const ForkSucceeded& from);
+  void Clear();
+  bool IsInitialized() const;
+  
+  int ByteSize() const;
+  bool MergePartialFromCodedStream(
+      ::google::protobuf::io::CodedInputStream* input);
+  void SerializeWithCachedSizes(
+      ::google::protobuf::io::CodedOutputStream* output) const;
+  ::google::protobuf::uint8* SerializeWithCachedSizesToArray(::google::protobuf::uint8* output) const;
+  int GetCachedSize() const { return _cached_size_; }
+  private:
+  void SharedCtor();
+  void SharedDtor();
+  void SetCachedSize(int size) const;
+  public:
+  
+  ::google::protobuf::Metadata GetMetadata() const;
+  
+  // nested types ----------------------------------------------------
+  
+  // accessors -------------------------------------------------------
+  
+  // required uint64 pid = 1;
+  inline bool has_pid() const;
+  inline void clear_pid();
+  static const int kPidFieldNumber = 1;
+  inline ::google::protobuf::uint64 pid() const;
+  inline void set_pid(::google::protobuf::uint64 value);
+  
+  // @@protoc_insertion_point(class_scope:castor.messages.ForkSucceeded)
+ private:
+  ::google::protobuf::UnknownFieldSet _unknown_fields_;
+  mutable int _cached_size_;
+  
+  ::google::protobuf::uint64 pid_;
+  friend void  protobuf_AddDesc_ForkSucceeded_2eproto();
+  friend void protobuf_AssignDesc_ForkSucceeded_2eproto();
+  friend void protobuf_ShutdownFile_ForkSucceeded_2eproto();
+  
+  ::google::protobuf::uint32 _has_bits_[(1 + 31) / 32];
+  
+  // WHY DOES & HAVE LOWER PRECEDENCE THAN != !?
+  inline bool _has_bit(int index) const {
+    return (_has_bits_[index / 32] & (1u << (index % 32))) != 0;
+  }
+  inline void _set_bit(int index) {
+    _has_bits_[index / 32] |= (1u << (index % 32));
+  }
+  inline void _clear_bit(int index) {
+    _has_bits_[index / 32] &= ~(1u << (index % 32));
+  }
+  
+  void InitAsDefaultInstance();
+  static ForkSucceeded* default_instance_;
+};
+// ===================================================================
+
+
+// ===================================================================
+
+// ForkSucceeded
+
+// required uint64 pid = 1;
+inline bool ForkSucceeded::has_pid() const {
+  return _has_bit(0);
+}
+inline void ForkSucceeded::clear_pid() {
+  pid_ = GOOGLE_ULONGLONG(0);
+  _clear_bit(0);
+}
+inline ::google::protobuf::uint64 ForkSucceeded::pid() const {
+  return pid_;
+}
+inline void ForkSucceeded::set_pid(::google::protobuf::uint64 value) {
+  _set_bit(0);
+  pid_ = value;
+}
+
+
+// @@protoc_insertion_point(namespace_scope)
+
+}  // namespace messages
+}  // namespace castor
+
+#ifndef SWIG
+namespace google {
+namespace protobuf {
+
+
+}  // namespace google
+}  // namespace protobuf
+#endif  // SWIG
+
+// @@protoc_insertion_point(global_scope)
+
+#endif  // PROTOBUF_ForkSucceeded_2eproto__INCLUDED

castor/messages/ForkSucceeded.proto

+// This file is part of the Castor project.
+// See http://castor.web.cern.ch/castor
+//
+// Copyright (C) 2003  CERN
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation; either version 2
+// of the License, or (at your option) any later version.
+// 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.  See the
+// GNU General Public License for more details.
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+//
+//
+// @author Castor Dev team, castor-dev@cern.ch
+
+package castor.messages;
+
+message ForkSucceeded {
+  required uint64 pid = 1;
+}

castor/messages/Header.proto

-//
-//         castor/messages/TapeserverProxyFactory.cpp
-//
 // This file is part of the Castor project.
 // See http://castor.web.cern.ch/castor
 //
@@ -49,4 +46,4 @@ message Header {
 message ReturnValue{
   required uint32 returnValue = 1;
   required string message= 2;
-}
\ No newline at end of file
+}

castor/messages/Status.pb.cc

+// Generated by the protocol buffer compiler.  DO NOT EDIT!
+
+#define INTERNAL_SUPPRESS_PROTOBUF_FIELD_DEPRECATION
+#include "Status.pb.h"
+#include <google/protobuf/stubs/once.h>
+#include <google/protobuf/io/coded_stream.h>
+#include <google/protobuf/wire_format_lite_inl.h>
+#include <google/protobuf/descriptor.h>
+#include <google/protobuf/reflection_ops.h>
+#include <google/protobuf/wire_format.h>
+// @@protoc_insertion_point(includes)
+
+namespace castor {
+namespace messages {
+
+namespace {
+
+const ::google::protobuf::Descriptor* Status_descriptor_ = NULL;
+const ::google::protobuf::internal::GeneratedMessageReflection*
+  Status_reflection_ = NULL;
+
+}  // namespace
+
+
+void protobuf_AssignDesc_Status_2eproto() {
+  protobuf_AddDesc_Status_2eproto();
+  const ::google::protobuf::FileDescriptor* file =
+    ::google::protobuf::DescriptorPool::generated_pool()->FindFileByName(
+      "Status.proto");
+  GOOGLE_CHECK(file != NULL);
+  Status_descriptor_ = file->message_type(0);
+  static const int Status_offsets_[2] = {
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Status, status_),
+    GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Status, message_),
+  };
+  Status_reflection_ =
+    new ::google::protobuf::internal::GeneratedMessageReflection(
+      Status_descriptor_,
+      Status::default_instance_,
+      Status_offsets_,
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Status, _has_bits_[0]),
+      GOOGLE_PROTOBUF_GENERATED_MESSAGE_FIELD_OFFSET(Status, _unknown_fields_),
+      -1,
+      ::google::protobuf::DescriptorPool::generated_pool(),
+      ::google::protobuf::MessageFactory::generated_factory(),
+      sizeof(Status));
+}
+
+namespace {
+
+GOOGLE_PROTOBUF_DECLARE_ONCE(protobuf_AssignDescriptors_once_);
+inline void protobuf_AssignDescriptorsOnce() {
+  ::google::protobuf::GoogleOnceInit(&protobuf_AssignDescriptors_once_,
+                 &protobuf_AssignDesc_Status_2eproto);
+}
+
+void protobuf_RegisterTypes(const ::std::string&) {
+  protobuf_AssignDescriptorsOnce();
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedMessage(
+    Status_descriptor_, &Status::default_instance());
+}
+
+}  // namespace
+
+void protobuf_ShutdownFile_Status_2eproto() {
+  delete Status::default_instance_;
+  delete Status_reflection_;
+}
+
+void protobuf_AddDesc_Status_2eproto() {
+  static bool already_here = false;
+  if (already_here) return;
+  already_here = true;
+  GOOGLE_PROTOBUF_VERIFY_VERSION;
+
+  ::google::protobuf::DescriptorPool::InternalAddGeneratedFile(
+    "\n\014Status.proto\022\017castor.messages\")\n\006Statu"
+    "s\022\016\n\006status\030\001 \002(\r\022\017\n\007message\030\002 \002(\t", 74);
+  ::google::protobuf::MessageFactory::InternalRegisterGeneratedFile(