static Slice::TypePtr
findType(const Slice::UnitPtr& u, const string& type)
{
Slice::TypeList l;
string t;
if(type == "::Ice::Object")
{
t = "Object";
}
else if(type == "::Ice::Object*")
{
t = "Object*";
}
else
{
t = type;
}
l = u->lookupType(t, false);
if(l.empty())
{
return 0;
}
return l.front();
}
bool
FreezeScript::TransformVisitor::checkClasses(const Slice::ClassDeclPtr& dest, const Slice::ClassDeclPtr& src)
{
//
// Here are the rules for verifying class compatibility:
//
// 1. If the type ids are the same, assume they are compatible.
// 2. If the source type has been renamed, then check its equivalent new definition for compatibility.
// 3. Otherwise, the types are only compatible if they are defined in the same Slice unit, and if the
// destination type is a base type of the source type.
//
string s1 = dest->scoped();
string s2 = src->scoped();
if(s1 == s2)
{
return true;
}
else
{
Slice::TypePtr t = _info->getRenamedType(src);
Slice::ClassDeclPtr s = Slice::ClassDeclPtr::dynamicCast(t);
if(s)
{
return checkClasses(dest, s);
}
if(dest->unit().get() != src->unit().get())
{
Slice::TypeList l = dest->unit()->lookupTypeNoBuiltin(s2, false);
if(l.empty())
{
_info->getErrorReporter()->error("class " + s2 + " not found in new Slice definitions");
}
s = Slice::ClassDeclPtr::dynamicCast(l.front());
}
else
{
s = src;
}
if(s)
{
Slice::ClassDefPtr def = s->definition();
if(!def)
{
_info->getErrorReporter()->error("class " + s2 + " declared but not defined");
}
return def->isA(s1);
}
}
return false;
}
void
FreezeScript::TransformVisitor::visitObject(const ObjectRefPtr& dest)
{
Slice::TypePtr type = dest->getType();
ObjectRefPtr src = ObjectRefPtr::dynamicCast(_src);
if(!src)
{
typeMismatchError(type, _src->getType());
}
else if(_info->doDefaultTransform(type))
{
ObjectDataPtr srcValue = src->getValue();
Slice::TypePtr srcType = src->getType();
if(!srcValue)
{
//
// Allow a nil value from type Object.
//
if(Slice::BuiltinPtr::dynamicCast(srcType) || isCompatible(type, srcType))
{
dest->setValue(0);
}
else
{
typeMismatchError(type, srcType);
}
}
else
{
Slice::TypePtr srcValueType = srcValue->getType();
if(isCompatible(type, srcValueType))
{
//
// If the types are in the same Slice unit, then we can simply
// copy the reference. Otherwise, we check the object map to
// see if an equivalent object has already been created, and
// if not, then we have to create one.
//
if(type->unit().get() == srcValueType->unit().get())
{
dest->setValue(srcValue);
}
else
{
ObjectDataMap& objectDataMap = _info->getObjectDataMap();
ObjectDataMap::iterator p = objectDataMap.find(srcValue.get());
if(p != objectDataMap.end() && p->second)
{
dest->setValue(p->second);
}
else
{
//
// If the type has been renamed, we need to get its equivalent
// in the new Slice definitions.
//
Slice::TypePtr newType = _info->getRenamedType(srcValueType);
if(!newType)
{
string name = typeToString(srcValueType);
Slice::TypeList l = type->unit()->lookupType(name, false);
if(l.empty())
{
throw ClassNotFoundException(name);
}
newType = l.front();
}
//
// Use createObject() so that an initializer is invoked if necessary.
//
DataPtr newObj = _info->getDataFactory()->createObject(newType, false);
ObjectRefPtr newRef = ObjectRefPtr::dynamicCast(newObj);
assert(newRef);
ObjectDataPtr newValue = newRef->getValue();
try
{
transformObject(newValue, srcValue);
}
catch(...)
{
newObj->destroy();
throw;
}
dest->setValue(newValue);
newObj->destroy();
}
}
}
else
{
typeMismatchError(type, srcValueType);
}
}
}
_info->executeCustomTransform(dest, _src);
}
static int
run(const Ice::StringSeq& originalArgs, const Ice::CommunicatorPtr& communicator,
const FreezeScript::CompactIdResolverIPtr& resolver)
{
vector<string> cppArgs;
bool debug;
bool ice = true; // Needs to be true in order to create default definitions.
bool underscore;
string outputFile;
string inputFile;
vector<string> slice;
bool evictor;
string keyTypeName;
string valueTypeName;
string selectExpr;
string dbEnvName, dbName;
const string appName = originalArgs[0];
IceUtilInternal::Options opts;
opts.addOpt("h", "help");
opts.addOpt("v", "version");
opts.addOpt("D", "", IceUtilInternal::Options::NeedArg, "", IceUtilInternal::Options::Repeat);
opts.addOpt("U", "", IceUtilInternal::Options::NeedArg, "", IceUtilInternal::Options::Repeat);
opts.addOpt("I", "", IceUtilInternal::Options::NeedArg, "", IceUtilInternal::Options::Repeat);
opts.addOpt("d", "debug");
opts.addOpt("", "ice");
opts.addOpt("", "underscore");
opts.addOpt("o", "", IceUtilInternal::Options::NeedArg);
opts.addOpt("f", "", IceUtilInternal::Options::NeedArg);
opts.addOpt("", "load", IceUtilInternal::Options::NeedArg, "", IceUtilInternal::Options::Repeat);
opts.addOpt("e");
opts.addOpt("", "key", IceUtilInternal::Options::NeedArg);
opts.addOpt("", "value", IceUtilInternal::Options::NeedArg);
opts.addOpt("", "select", IceUtilInternal::Options::NeedArg);
opts.addOpt("c", "catalog");
vector<string> args;
try
{
args = opts.parse(originalArgs);
}
catch(const IceUtilInternal::BadOptException& e)
{
cerr << appName << ": " << e.reason << endl;
usage(appName);
return EXIT_FAILURE;
}
//
// Freeze creates a lock file by default to prevent multiple processes from opening
// the same database environment simultaneously. In the case of a read-only program
// such as dumpdb, however, we still want to be able to open the environment despite
// the lock. This assumes of course that the other process has opened the environment
// with DbPrivate=0. If DbPrivate=0 is also set for dumpdb, we disable the lock.
//
if(!args.empty())
{
//
// If an argument is present, we assume it is the name of the database environment.
//
Ice::PropertiesPtr props = communicator->getProperties();
string prefix = "Freeze.DbEnv." + args[0];
if(props->getPropertyAsIntWithDefault(prefix + ".DbPrivate", 1) <= 0)
{
props->setProperty(prefix + ".LockFile", "0");
}
}
if(opts.isSet("h"))
{
usage(appName);
return EXIT_SUCCESS;
}
if(opts.isSet("version"))
{
cout << ICE_STRING_VERSION << endl;
return EXIT_SUCCESS;
}
if(opts.isSet("c"))
{
if(args.empty())
{
cerr << appName << ": no database environment specified." << endl;
usage(appName);
return EXIT_FAILURE;
}
else if(args.size() > 2)
{
usage(appName);
return EXIT_FAILURE;
}
try
{
FreezeScript::CatalogDataMap catalog = FreezeScript::readCatalog(communicator, args[0]);
if(args.size() == 1)
{
if(catalog.empty())
{
cout << "Catalog is empty." << endl;
}
else
{
cout << "Catalog contents:" << endl;
for(FreezeScript::CatalogDataMap::const_iterator p = catalog.begin(); p != catalog.end(); ++p)
{
cout << endl;
printCatalogData(p->first, p->second);
}
}
}
else
{
FreezeScript::CatalogDataMap::const_iterator p = catalog.find(args[1]);
if(p == catalog.end())
{
cerr << appName << ": database `" << args[1] << "' not found in environment `" << args[0] << "'."
<< endl;
return EXIT_FAILURE;
}
else
{
printCatalogData(p->first, p->second);
}
}
return EXIT_SUCCESS;
}
catch(const FreezeScript::FailureException& ex)
{
cerr << appName << ": " << ex.reason() << endl;
return EXIT_FAILURE;
}
}
if(opts.isSet("D"))
{
vector<string> optargs = opts.argVec("D");
for(vector<string>::const_iterator i = optargs.begin(); i != optargs.end(); ++i)
{
cppArgs.push_back("-D" + *i);
}
}
if(opts.isSet("U"))
{
vector<string> optargs = opts.argVec("U");
for(vector<string>::const_iterator i = optargs.begin(); i != optargs.end(); ++i)
{
cppArgs.push_back("-U" + *i);
}
}
if(opts.isSet("I"))
{
vector<string> optargs = opts.argVec("I");
for(vector<string>::const_iterator i = optargs.begin(); i != optargs.end(); ++i)
{
cppArgs.push_back("-I" + *i);
}
}
debug = opts.isSet("debug");
// No need to set --ice option here -- it is always true.
underscore = opts.isSet("underscore");
if(opts.isSet("o"))
{
outputFile = opts.optArg("o");
}
if(opts.isSet("f"))
{
inputFile = opts.optArg("f");
}
if(opts.isSet("load"))
{
vector<string> optArgs = opts.argVec("load");
for(vector<string>::const_iterator i = optArgs.begin(); i != optArgs.end(); ++i)
{
slice.push_back(*i);
}
}
evictor = opts.isSet("e");
if(opts.isSet("key"))
{
keyTypeName = opts.optArg("key");
}
if(opts.isSet("value"))
{
valueTypeName = opts.optArg("value");
}
if(opts.isSet("select"))
{
selectExpr = opts.optArg("select");
}
if(outputFile.empty() && args.size() != 2)
{
usage(appName);
return EXIT_FAILURE;
}
if(!args.empty())
{
dbEnvName = args[0];
}
if(args.size() == 2)
{
dbName = args[1];
}
else
{
usage(appName);
return EXIT_FAILURE;
}
if(!inputFile.empty() && !selectExpr.empty())
{
cerr << appName << ": an input file cannot be specified with --select" << endl;
return EXIT_FAILURE;
}
Slice::UnitPtr unit = Slice::Unit::createUnit(true, true, ice, underscore);
FreezeScript::Destroyer<Slice::UnitPtr> unitD(unit);
if(!FreezeScript::parseSlice(appName, unit, slice, cppArgs, debug, "-D__DUMPDB__"))
{
return EXIT_FAILURE;
}
FreezeScript::createEvictorSliceTypes(unit);
FreezeScript::collectCompactIds(unit, resolver);
//
// If no input file was provided, then we need to generate default descriptors.
//
string descriptors;
if(inputFile.empty())
{
const string evictorKeyTypeName = "::Ice::Identity";
const string oldEvictorValueTypeName = "::Freeze::ObjectRecord";
const string newEvictorValueTypeName = "Object";
if((!keyTypeName.empty() && valueTypeName.empty()) || (keyTypeName.empty() && !valueTypeName.empty() && !evictor))
{
cerr << appName << ": a key type and a value type must be specified" << endl;
usage(appName);
return EXIT_FAILURE;
}
else if(valueTypeName.empty())
{
try
{
FreezeScript::CatalogDataMap catalog = FreezeScript::readCatalog(communicator, dbEnvName);
FreezeScript::CatalogDataMap::iterator p = catalog.find(dbName);
if(p == catalog.end())
{
cerr << appName << ": database `" << dbName << "' not found in catalog." << endl;
cerr << "Current catalog databases:" << endl;
for(p = catalog.begin(); p != catalog.end(); ++p)
{
cerr << " " << p->first << endl;
}
return EXIT_FAILURE;
}
else
{
if(p->second.evictor)
{
evictor = true;
}
keyTypeName = p->second.key;
valueTypeName = p->second.value;
if(evictor && valueTypeName.empty())
{
valueTypeName = oldEvictorValueTypeName;
}
}
}
catch(const FreezeScript::FailureException& ex)
{
cerr << appName << ": " << ex.reason() << endl;
return EXIT_FAILURE;
}
}
if(evictor)
{
if(keyTypeName.empty())
{
keyTypeName = evictorKeyTypeName;
}
if(valueTypeName.empty())
{
valueTypeName = newEvictorValueTypeName;
}
}
Slice::TypePtr keyType, valueType;
Slice::TypeList l;
l = unit->lookupType(keyTypeName, false);
if(l.empty())
{
cerr << appName << ": unknown key type `" << keyTypeName << "'" << endl;
return EXIT_FAILURE;
}
keyType = l.front();
l = unit->lookupType(valueTypeName, false);
if(l.empty())
{
cerr << appName << ": unknown value type `" << valueTypeName << "'" << endl;
return EXIT_FAILURE;
}
valueType = l.front();
ostringstream os;
IceUtilInternal::XMLOutput out(os);
out << se("dumpdb");
FreezeScript::SliceVisitor visitor(out, keyType, valueType, selectExpr);
unit->visit(&visitor, false);
out << ee;
descriptors = os.str();
if(!outputFile.empty())
{
IceUtilInternal::ofstream of(outputFile);
if(!of.good())
{
cerr << appName << ": unable to open file `" << outputFile << "'" << endl;
return EXIT_FAILURE;
}
of << descriptors << endl;
of.close();
return EXIT_SUCCESS;
}
}
else
{
IceUtilInternal::ifstream in(inputFile);
char buff[1024];
while(true)
{
in.read(buff, 1024);
descriptors.append(buff, static_cast<size_t>(in.gcount()));
if(in.gcount() < 1024)
{
break;
}
}
in.close();
}
FreezeScript::ValueFactoryPtr valueFactory = new FreezeScript::ValueFactory;
communicator->getValueFactoryManager()->add(valueFactory, "");
DbEnv dbEnv(0);
DbTxn* txn = 0;
Freeze::ConnectionPtr connection;
int status = EXIT_SUCCESS;
try
{
#ifdef _WIN32
//
// Berkeley DB may use a different C++ runtime.
//
dbEnv.set_alloc(::malloc, ::realloc, ::free);
#endif
//
// Open the database environment and start a transaction.
//
{
u_int32_t flags = DB_THREAD | DB_CREATE | DB_INIT_TXN | DB_INIT_MPOOL;
dbEnv.open(dbEnvName.c_str(), flags, FREEZE_SCRIPT_DB_MODE);
}
//
// We're creating a connection just to make sure the database environment
// isn't locked.
//
connection = Freeze::createConnection(communicator, dbEnvName, dbEnv);
dbEnv.txn_begin(0, &txn, 0);
FreezeScript::ErrorReporterPtr errorReporter = new FreezeScript::ErrorReporter(cerr, false);
try
{
FreezeScript::DataFactoryPtr factory = new FreezeScript::DataFactory(communicator, unit, errorReporter);
FreezeScript::DescriptorHandler dh(factory, unit, errorReporter, valueFactory);
istringstream istr(descriptors);
IceXML::Parser::parse(istr, dh);
FreezeScript::DumpDBDescriptorPtr descriptor = dh.descriptor();
descriptor->validate();
if(evictor)
{
//
// The evictor database file contains multiple databases. We must first
// determine the names of those databases, ignoring any whose names
// begin with "$index:". Each database represents a separate facet, with
// the facet name used as the database name. The database named "$default"
// represents the main object.
//
vector<string> dbNames;
{
Db db(&dbEnv, 0);
db.open(txn, dbName.c_str(), 0, DB_UNKNOWN, DB_RDONLY, 0);
Dbt dbKey, dbValue;
dbKey.set_flags(DB_DBT_MALLOC);
dbValue.set_flags(DB_DBT_USERMEM | DB_DBT_PARTIAL);
Dbc* dbc = 0;
db.cursor(txn, &dbc, 0);
while(dbc->get(&dbKey, &dbValue, DB_NEXT) == 0)
{
string s(static_cast<char*>(dbKey.get_data()), dbKey.get_size());
if(s.find("$index:") != 0)
{
dbNames.push_back(s);
}
free(dbKey.get_data());
}
dbc->close();
db.close(0);
}
//
// Dump each database.
//
for(vector<string>::iterator p = dbNames.begin(); p != dbNames.end(); ++p)
{
string name = *p;
string facet = (name == "$default" ? string("") : name);
Db db(&dbEnv, 0);
db.open(txn, dbName.c_str(), name.c_str(), DB_BTREE, DB_RDONLY, FREEZE_SCRIPT_DB_MODE);
descriptor->dump(communicator, &db, txn, facet);
db.close(0);
}
}
else
{
//
// Dump a map database.
//
Db db(&dbEnv, 0);
db.open(txn, dbName.c_str(), 0, DB_BTREE, DB_RDONLY, FREEZE_SCRIPT_DB_MODE);
descriptor->dump(communicator, &db, txn, "");
db.close(0);
}
}
catch(const IceXML::ParserException& ex)
{
errorReporter->error(ex.reason());
}
}
catch(const DbException& ex)
{
cerr << appName << ": database error: " << ex.what() << endl;
status = EXIT_FAILURE;
}
catch(...)
{
try
{
if(txn)
{
txn->abort();
}
dbEnv.close(0);
}
catch(const DbException& ex)
{
cerr << appName << ": database error: " << ex.what() << endl;
}
if(connection)
{
connection->close();
connection = 0;
}
throw;
}
try
{
if(txn)
{
txn->abort();
}
if(connection)
{
connection->close();
}
dbEnv.close(0);
}
catch(const DbException& ex)
{
cerr << appName << ": database error: " << ex.what() << endl;
status = EXIT_FAILURE;
}
return status;
}
bool
FreezeScript::invokeGlobalFunction(const Ice::CommunicatorPtr& communicator, const string& name, const DataList& args,
DataPtr& result, const DataFactoryPtr& factory,
const ErrorReporterPtr& errorReporter)
{
//
// Global function.
//
if(name == "typeOf")
{
if(args.size() != 1)
{
errorReporter->error("typeOf() requires one argument");
}
result = factory->createString(typeToString(args.front()->getType()), false);
return true;
}
else if(name == "generateUUID")
{
if(args.size() != 0)
{
errorReporter->error("generateUUID() accepts no arguments");
}
result = factory->createString(IceUtil::generateUUID(), false);
return true;
}
else if(name == "stringToIdentity")
{
StringDataPtr str;
if(args.size() > 0)
{
str = StringDataPtr::dynamicCast(args.front());
}
if(args.size() != 1 || !str)
{
errorReporter->error("stringToIdentity() requires a string argument");
}
//
// Parse the identity string.
//
string idstr = str->stringValue();
Ice::Identity id;
try
{
id = communicator->stringToIdentity(idstr);
}
catch(const Ice::IdentityParseException& ex)
{
errorReporter->error("error in stringToIdentity():\n" + ex.str);
}
//
// Create a data representation of Ice::Identity.
//
Slice::UnitPtr unit = str->getType()->unit();
Slice::TypeList l = unit->lookupType("::Ice::Identity", false);
assert(!l.empty());
DataPtr identity = factory->create(l.front(), false);
StringDataPtr member;
member = StringDataPtr::dynamicCast(identity->getMember("name"));
assert(member);
member->setValue(id.name);
member = StringDataPtr::dynamicCast(identity->getMember("category"));
assert(member);
member->setValue(id.category);
result = identity;
return true;
}
else if(name == "identityToString")
{
StructDataPtr identity;
if(args.size() > 0)
{
identity = StructDataPtr::dynamicCast(args.front());
}
if(identity)
{
Slice::TypePtr argType = identity->getType();
Slice::StructPtr st = Slice::StructPtr::dynamicCast(argType);
if(!st || st->scoped() != "::Ice::Identity")
{
identity = 0;
}
}
if(args.size() != 1 || !identity)
{
errorReporter->error("identityToString() requires a argument of type ::Ice::Identity");
}
//
// Compose the identity.
//
Ice::Identity id;
StringDataPtr member;
member = StringDataPtr::dynamicCast(identity->getMember("name"));
assert(member);
id.name = member->stringValue();
member = StringDataPtr::dynamicCast(identity->getMember("category"));
assert(member);
id.category = member->stringValue();
result = factory->createString(communicator->identityToString(id), false);
return true;
}
else if(name == "stringToProxy")
{
StringDataPtr str;
if(args.size() > 0)
{
str = StringDataPtr::dynamicCast(args.front());
}
if(args.size() != 1 || !str)
{
errorReporter->error("stringToProxy() requires a string argument");
}
//
// Parse the proxy;
//
string sprx = str->stringValue();
Ice::ObjectPrx prx;
try
{
prx = factory->getCommunicator()->stringToProxy(sprx);
}
catch(const Ice::ProxyParseException& ex)
{
errorReporter->error("error in stringToProxy():\n" + ex.str);
}
Slice::UnitPtr unit = str->getType()->unit();
ProxyDataPtr p =
ProxyDataPtr::dynamicCast(factory->create(unit->builtin(Slice::Builtin::KindObjectProxy), false));
p->setValue(prx);
result = p;
return true;
}
else if(name == "proxyToString")
{
ProxyDataPtr prx;
if(args.size() > 0)
{
prx = ProxyDataPtr::dynamicCast(args.front());
}
if(args.size() != 1 || !prx)
{
errorReporter->error("proxyToString() requires a proxy argument");
}
result = factory->createString(prx->toString(), false);
return true;
}
else if(name == "lowercase")
{
StringDataPtr str;
if(args.size() > 0)
{
str = StringDataPtr::dynamicCast(args.front());
}
if(args.size() != 1 || !str)
{
errorReporter->error("lowercase() requires a string argument");
}
string val = IceUtilInternal::toLower(str->stringValue());
result = factory->createString(val, false);
return true;
}
return false;
}
void
FreezeScript::createEvictorSliceTypes(const Slice::UnitPtr& u)
{
Slice::TypeList l;
Slice::ContainedList c;
//
// Create the Ice module if necessary.
//
c = u->lookupContained("Ice", false);
Slice::ModulePtr ice;
if(c.empty())
{
ice = u->createModule("Ice");
}
else
{
ice = Slice::ModulePtr::dynamicCast(c.front());
if(!ice)
{
throw FailureException(__FILE__, __LINE__, "the symbol `::Ice' is defined in Slice but is not a module");
}
}
//
// Create the Slice definition for Ice::Identity if it doesn't exist.
//
string scoped = "::Ice::Identity";
l = u->lookupTypeNoBuiltin(scoped, false);
Slice::StructPtr identity;
if(l.empty())
{
identity = ice->createStruct("Identity", false);
Slice::TypePtr str = u->builtin(Slice::Builtin::KindString);
identity->createDataMember("name", str, false, 0, 0, "", "");
identity->createDataMember("category", str, false, 0, 0, "", "");
}
else
{
identity = Slice::StructPtr::dynamicCast(l.front());
if(!identity)
{
throw FailureException(__FILE__, __LINE__,
"the symbol `::Ice::Identity' is defined in Slice but is not a struct");
}
}
//
// Create the Freeze module if necessary.
//
c = u->lookupContained("Freeze", false);
Slice::ModulePtr freeze;
if(c.empty())
{
freeze = u->createModule("Freeze");
}
else
{
freeze = Slice::ModulePtr::dynamicCast(c.front());
if(!freeze)
{
throw FailureException(__FILE__, __LINE__,
"the symbol `::Freeze' is defined in Slice but is not a module");
}
}
//
// Create the Slice definition for Freeze::Statistics if it doesn't exist.
//
scoped = "::Freeze::Statistics";
l = u->lookupTypeNoBuiltin(scoped, false);
Slice::StructPtr stats;
if(l.empty())
{
stats = freeze->createStruct("Statistics", false);
Slice::TypePtr tl = u->builtin(Slice::Builtin::KindLong);
stats->createDataMember("creationTime", tl, false, 0, 0, "", "");
stats->createDataMember("lastSaveTime", tl, false, 0, 0, "", "");
stats->createDataMember("avgSaveTime", tl, false, 0, 0, "", "");
}
else
{
stats = Slice::StructPtr::dynamicCast(l.front());
if(!stats)
{
throw FailureException(__FILE__, __LINE__, "the symbol `::Freeze::Statistics' is defined in "
"Slice but is not a struct");
}
}
//
// Create the Slice definition for Freeze::ObjectRecord if it doesn't exist.
//
scoped = "::Freeze::ObjectRecord";
l = u->lookupTypeNoBuiltin(scoped, false);
if(l.empty())
{
Slice::StructPtr rec = freeze->createStruct("ObjectRecord", false);
Slice::TypePtr obj = u->builtin(Slice::Builtin::KindObject);
rec->createDataMember("servant", obj, false, 0, 0, "", "");
rec->createDataMember("stats", stats, false, 0, 0, "", "");
}
else
{
if(!Slice::StructPtr::dynamicCast(l.front()))
{
throw FailureException(__FILE__, __LINE__, "the symbol `::Freeze::ObjectRecord' is defined in "
"Slice but is not a struct");
}
}
}