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Ice is a comprehensive RPC framework that helps you build distributed applications with minimal effort using familiar object-oriented idioms
//
// Copyright (c) ZeroC, Inc. All rights reserved.
//
package com.zeroc.Ice;
import com.zeroc.IceUtilInternal.StringUtil;
/**
* Utility methods for the Ice run time.
**/
public final class Util
{
/**
* Creates a new empty property set.
*
* @return A new empty property set.
**/
public static Properties createProperties()
{
return new PropertiesI();
}
/**
* Creates a property set initialized from an argument vector.
*
* @param args A command-line argument vector, possibly containing
* options to set properties. If the command-line options include
* a --Ice.Config option, the corresponding configuration
* files are parsed. If the same property is set in a configuration
* file and in the argument vector, the argument vector takes precedence.
*
* @return A new property set initialized with the property settings
* that were removed from the argument vector.
**/
public static Properties createProperties(String[] args)
{
return createProperties(args, null, null);
}
/**
* Creates a property set initialized from an argument vector and
* return the remaining arguments.
*
* @param args A command-line argument vector, possibly containing
* options to set properties. If the command-line options include
* a --Ice.Config option, the corresponding configuration
* files are parsed. If the same property is set in a configuration
* file and in the argument vector, the argument vector takes precedence.
*
* @param remainingArgs If non null, the given list will contain on
* return the command-line arguments that were not used to set properties.
*
* @return A new property set initialized with the property settings
* that were removed from the argument vector.
**/
public static Properties createProperties(String[] args, java.util.List remainingArgs)
{
return createProperties(args, null, remainingArgs);
}
/**
* Creates a property set initialized from an argument vector.
*
* @param args A command-line argument vector, possibly containing
* options to set properties. If the command-line options include
* a --Ice.Config option, the corresponding configuration
* files are parsed. If the same property is set in a configuration
* file and in the argument vector, the argument vector takes precedence.
*
* @param defaults Default values for the property set. Settings in
* configuration files and args override these defaults.
*
* @return A new property set initialized with the property settings
* that were removed from the argument vector.
**/
public static Properties createProperties(String[] args, Properties defaults)
{
return createProperties(args, defaults, null);
}
/**
* Creates a property set initialized from an argument vector and
* return the remaining arguments.
*
* @param args A command-line argument vector, possibly containing
* options to set properties. If the command-line options include
* a --Ice.Config option, the corresponding configuration
* files are parsed. If the same property is set in a configuration
* file and in the argument vector, the argument vector takes precedence.
*
* @param defaults Default values for the property set. Settings in
* configuration files and args override these defaults.
*
* @param remainingArgs If non null, the given list will contain on
* return the command-line arguments that were not used to set properties.
*
* @return A new property set initialized with the property settings
* that were removed from the argument vector.
**/
public static Properties createProperties(String[] args,
Properties defaults,
java.util.List remainingArgs)
{
PropertiesI properties = new PropertiesI();
properties.init(args, defaults, remainingArgs);
return properties;
}
/**
* Creates a communicator using a default configuration.
*
* @return A new communicator instance.
**/
public static Communicator initialize()
{
return initialize(new InitializationData());
}
/**
* Creates a communicator.
*
* @param args A command-line argument vector. Any Ice-related options
* in this vector are used to initialize the communicator.
*
* @return The new communicator.
**/
public static Communicator initialize(String[] args)
{
return initialize(args, (InitializationData)null, null);
}
/**
* Creates a communicator.
*
* @param args A command-line argument vector. Any Ice-related options
* in this vector are used to initialize the communicator.
*
* @param remainingArgs If non null, the given list will contain on
* return the command-line arguments that were not used to set properties.
*
* @return The new communicator.
**/
public static Communicator initialize(String[] args, java.util.List remainingArgs)
{
return initialize(args, (InitializationData)null, remainingArgs);
}
/**
* Creates a communicator.
*
* @param initData Additional initialization data.
*
* @return The new communicator.
**/
public static Communicator initialize(InitializationData initData)
{
return initialize(null, initData, null);
}
/**
* Creates a communicator.
*
* @param args A command-line argument vector. Any Ice-related options
* in this vector are used to initialize the communicator.
*
* @param initData Additional initialization data.
*
* @return The new communicator.
**/
public static Communicator initialize(String[] args, InitializationData initData)
{
return initialize(args, initData, null);
}
/**
* Creates a communicator.
*
* @param args A command-line argument vector. Any Ice-related options
* in this vector are used to initialize the communicator.
*
* @param configFile Path to a config file that sets the new communicator's default
* properties.
*
* @return The new communicator.
**/
public static Communicator initialize(String[] args, String configFile)
{
return initialize(args, configFile, null);
}
/**
* Creates a communicator.
*
* @param args A command-line argument vector. Any Ice-related options
* in this vector are used to initialize the communicator.
*
* @param initData Additional initialization data. Property settings in args
* override property settings in initData.
*
* @param remainingArgs If non null, the given list will contain on
* return the command-line arguments that were not used to set properties.
*
* @return The new communicator.
*
* @see InitializationData
**/
public static Communicator initialize(String[] args,
InitializationData initData,
java.util.List remainingArgs)
{
if(initData == null)
{
initData = new InitializationData();
}
else
{
initData = initData.clone();
}
if(args != null)
{
java.util.List rArgs = new java.util.ArrayList<>();
initData.properties = createProperties(args, initData.properties, rArgs);
args = rArgs.toArray(new String[rArgs.size()]);
}
CommunicatorI communicator = new CommunicatorI(initData);
communicator.finishSetup(args != null ? args : new String[0], remainingArgs);
return communicator;
}
/**
* Creates a communicator.
*
* @param args A command-line argument vector. Any Ice-related options
* in this vector are used to initialize the communicator.
*
* @param configFile Path to a config file that sets the new communicator's default
* properties.
*
* @param remainingArgs If non null, the given list will contain on
* return the command-line arguments that were not used to set properties.
*
* @return The new communicator.
**/
public static Communicator initialize(String[] args,
String configFile,
java.util.List remainingArgs)
{
InitializationData initData = null;
if(configFile != null)
{
initData = new InitializationData();
initData.properties = Util.createProperties();
initData.properties.load(configFile);
}
return initialize(args, initData, remainingArgs);
}
/**
* Converts a string to an object identity.
*
* @param s The string to convert.
*
* @return The converted object identity.
**/
public static Identity stringToIdentity(String s)
{
Identity ident = new Identity();
//
// Find unescaped separator; note that the string may contain an escaped
// backslash before the separator.
//
int slash = -1, pos = 0;
while((pos = s.indexOf('/', pos)) != -1)
{
int escapes = 0;
while(pos - escapes > 0 && s.charAt(pos - escapes - 1) == '\\')
{
escapes++;
}
//
// We ignore escaped escapes
//
if(escapes % 2 == 0)
{
if(slash == -1)
{
slash = pos;
}
else
{
//
// Extra unescaped slash found.
//
IdentityParseException ex = new IdentityParseException();
ex.str = "unescaped backslash in identity `" + s + "'";
throw ex;
}
}
pos++;
}
if(slash == -1)
{
ident.category = "";
try
{
ident.name = StringUtil.unescapeString(s, 0, s.length(), "/");
}
catch(IllegalArgumentException e)
{
IdentityParseException ex = new IdentityParseException();
ex.str = "invalid identity name `" + s + "': " + e.getMessage();
throw ex;
}
}
else
{
try
{
ident.category = StringUtil.unescapeString(s, 0, slash, "/");
}
catch(IllegalArgumentException e)
{
IdentityParseException ex = new IdentityParseException();
ex.str = "invalid category in identity `" + s + "': " + e.getMessage();
throw ex;
}
if(slash + 1 < s.length())
{
try
{
ident.name = StringUtil.unescapeString(s, slash + 1, s.length(), "/");
}
catch(IllegalArgumentException e)
{
IdentityParseException ex = new IdentityParseException();
ex.str = "invalid name in identity `" + s + "': " + e.getMessage();
throw ex;
}
}
else
{
ident.name = "";
}
}
return ident;
}
/**
* Converts an object identity to a string.
*
* @param ident The object identity to convert.
*
* @param toStringMode Specifies if and how non-printable ASCII characters are escaped in the result.
*
* @return The string representation of the object identity.
**/
public static String identityToString(Identity ident, ToStringMode toStringMode)
{
if(ident.category == null || ident.category.length() == 0)
{
return StringUtil.escapeString(ident.name, "/", toStringMode);
}
else
{
return StringUtil.escapeString(ident.category, "/", toStringMode) + '/' +
StringUtil.escapeString(ident.name, "/", toStringMode);
}
}
/**
* Converts an object identity to a string.
*
* @param ident The object identity to convert.
*
* @return The string representation of the object identity using the default mode (Unicode)
**/
public static String identityToString(Identity ident)
{
return identityToString(ident, ToStringMode.Unicode);
}
/**
* Compares the object identities of two proxies.
*
* @param lhs A proxy.
* @param rhs A proxy.
* @return -1 if the identity in lhs compares
* less than the identity in rhs; 0 if the identities
* compare equal; 1, otherwise.
*
* @see ProxyIdentityKey
* @see ProxyIdentityFacetKey
* @see #proxyIdentityAndFacetCompare
**/
public static int proxyIdentityCompare(ObjectPrx lhs, ObjectPrx rhs)
{
if(lhs == null && rhs == null)
{
return 0;
}
else if(lhs == null && rhs != null)
{
return -1;
}
else if(lhs != null && rhs == null)
{
return 1;
}
else
{
Identity lhsIdentity = lhs.ice_getIdentity();
Identity rhsIdentity = rhs.ice_getIdentity();
int n;
if((n = lhsIdentity.name.compareTo(rhsIdentity.name)) != 0)
{
return n;
}
return lhsIdentity.category.compareTo(rhsIdentity.category);
}
}
/**
* Compares the object identities and facets of two proxies.
*
* @param lhs A proxy.
* @param rhs A proxy.
* @return -1 if the identity and facet in lhs compare
* less than the identity and facet in rhs; 0 if the identities
* and facets compare equal; 1, otherwise.
*
* @see ProxyIdentityFacetKey
* @see ProxyIdentityKey
* @see #proxyIdentityCompare
**/
public static int proxyIdentityAndFacetCompare(ObjectPrx lhs, ObjectPrx rhs)
{
if(lhs == null && rhs == null)
{
return 0;
}
else if(lhs == null && rhs != null)
{
return -1;
}
else if(lhs != null && rhs == null)
{
return 1;
}
else
{
Identity lhsIdentity = lhs.ice_getIdentity();
Identity rhsIdentity = rhs.ice_getIdentity();
int n;
if((n = lhsIdentity.name.compareTo(rhsIdentity.name)) != 0)
{
return n;
}
if((n = lhsIdentity.category.compareTo(rhsIdentity.category)) != 0)
{
return n;
}
String lhsFacet = lhs.ice_getFacet();
String rhsFacet = rhs.ice_getFacet();
if(lhsFacet == null && rhsFacet == null)
{
return 0;
}
else if(lhsFacet == null)
{
return -1;
}
else if(rhsFacet == null)
{
return 1;
}
return lhsFacet.compareTo(rhsFacet);
}
}
/**
* Returns the process-wide logger.
*
* @return The process-wide logger.
**/
public static Logger getProcessLogger()
{
synchronized(_processLoggerMutex)
{
if(_processLogger == null)
{
//
// TODO: Would be nice to be able to use process name as prefix by default.
//
_processLogger = new LoggerI("", "");
}
return _processLogger;
}
}
/**
* Changes the process-wide logger.
*
* @param logger The new process-wide logger.
**/
public static void setProcessLogger(Logger logger)
{
synchronized(_processLoggerMutex)
{
_processLogger = logger;
}
}
/**
* Returns the Ice version in the form A.B.C, where A indicates the
* major version, B indicates the minor version, and C indicates the
* patch level.
*
* @return The Ice version.
**/
public static String stringVersion()
{
return "3.7.9"; // "A.B.C", with A=major, B=minor, C=patch
}
/**
* Returns the Ice version as an integer in the form A.BB.CC, where A
* indicates the major version, BB indicates the minor version, and CC
* indicates the patch level. For example, for Ice 3.3.1, the returned value is 30301.
*
* @return The Ice version.
**/
public static int intVersion()
{
return 30709; // AABBCC, with AA=major, BB=minor, CC=patch
}
/**
* Converts a string to a protocol version.
*
* @param version The string to convert.
*
* @return The converted protocol version.
**/
static public ProtocolVersion stringToProtocolVersion(String version)
{
return new ProtocolVersion(stringToMajor(version), stringToMinor(version));
}
/**
* Converts a string to an encoding version.
*
* @param version The string to convert.
*
* @return The converted encoding version.
**/
static public EncodingVersion stringToEncodingVersion(String version)
{
return new EncodingVersion(stringToMajor(version), stringToMinor(version));
}
/**
* Converts a protocol version to a string.
*
* @param v The protocol version to convert.
*
* @return The converted string.
**/
static public String protocolVersionToString(ProtocolVersion v)
{
return majorMinorToString(v.major, v.minor);
}
/**
* Converts an encoding version to a string.
*
* @param v The encoding version to convert.
*
* @return The converted string.
**/
static public String encodingVersionToString(EncodingVersion v)
{
return majorMinorToString(v.major, v.minor);
}
/**
* Returns the supported Ice protocol version.
*
* @return The Ice protocol version.
**/
static public ProtocolVersion currentProtocol()
{
return com.zeroc.IceInternal.Protocol.currentProtocol.clone();
}
/**
* Returns the supported Ice encoding version.
*
* @return The Ice encoding version.
**/
static public EncodingVersion currentEncoding()
{
return com.zeroc.IceInternal.Protocol.currentEncoding.clone();
}
/**
* Returns the InvocationFuture equivalent of the given CompletableFuture.
*
* @param f The CompletableFuture returned by an asynchronous Ice proxy invocation.
* @param The result type.
* @return The InvocationFuture object.
**/
static public InvocationFuture getInvocationFuture(java.util.concurrent.CompletableFuture f)
{
if(!(f instanceof InvocationFuture))
{
throw new IllegalArgumentException("future did not originate from an asynchronous proxy invocation");
}
return (InvocationFuture)f;
}
/**
* Translates a Slice type id to a Java class name.
*
* @param id The Slice type id, such as ::Module::Type.
* @return The equivalent Java class name, or null if the type id is malformed.
**/
static public String typeIdToClass(String id)
{
if(!id.startsWith("::"))
{
return null;
}
StringBuilder buf = new StringBuilder(id.length());
for(int i = 0; i < _iceTypeIdPrefixes.length; ++i)
{
if(id.startsWith(_iceTypeIdPrefixes[i]))
{
buf.append("com.zeroc");
break;
}
}
int start = 2;
boolean done = false;
while(!done)
{
int end = id.indexOf(':', start);
String s;
if(end != -1)
{
s = id.substring(start, end);
start = end + 2;
}
else
{
s = id.substring(start);
done = true;
}
if(buf.length() > 0)
{
buf.append('.');
}
buf.append(fixKwd(s));
}
return buf.toString();
}
static private String fixKwd(String name)
{
//
// Keyword list. *Must* be kept in alphabetical order. Note that checkedCast and uncheckedCast
// are not Java keywords, but are in this list to prevent illegal code being generated if
// someone defines Slice operations with that name.
//
final String[] keywordList =
{
"abstract", "assert", "boolean", "break", "byte", "case", "catch",
"char", "checkedCast", "class", "clone", "const", "continue", "default", "do",
"double", "else", "enum", "equals", "extends", "false", "final", "finalize",
"finally", "float", "for", "getClass", "goto", "hashCode", "if",
"implements", "import", "instanceof", "int", "interface", "long",
"native", "new", "notify", "notifyAll", "null", "package", "private",
"protected", "public", "return", "short", "static", "strictfp", "super", "switch",
"synchronized", "this", "throw", "throws", "toString", "transient",
"true", "try", "uncheckedCast", "void", "volatile", "wait", "while"
};
boolean found = java.util.Arrays.binarySearch(keywordList, name) >= 0;
return found ? "_" + name : name;
}
static private byte stringToMajor(String str)
{
int pos = str.indexOf('.');
if(pos == -1)
{
throw new VersionParseException("malformed version value `" + str + "'");
}
String majStr = str.substring(0, pos);
int majVersion;
try
{
majVersion = Integer.parseInt(majStr);
}
catch(NumberFormatException ex)
{
throw new VersionParseException("invalid version value `" + str + "'");
}
if(majVersion < 1 || majVersion > 255)
{
throw new VersionParseException("range error in version `" + str + "'");
}
return (byte)majVersion;
}
static private byte stringToMinor(String str)
{
int pos = str.indexOf('.');
if(pos == -1)
{
throw new VersionParseException("malformed version value `" + str + "'");
}
String minStr = str.substring(pos + 1, str.length());
int minVersion;
try
{
minVersion = Integer.parseInt(minStr);
}
catch(NumberFormatException ex)
{
throw new VersionParseException("invalid version value `" + str + "'");
}
if(minVersion < 0 || minVersion > 255)
{
throw new VersionParseException("range error in version `" + str + "'");
}
return (byte)minVersion;
}
static private String majorMinorToString(byte major, byte minor)
{
StringBuilder str = new StringBuilder();
str.append(major < 0 ? major + 255 : (int)major);
str.append(".");
str.append(minor < 0 ? minor + 255 : (int)minor);
return str.toString();
}
public final static ProtocolVersion Protocol_1_0 = new ProtocolVersion((byte)1, (byte)0);
public final static EncodingVersion Encoding_1_0 = new EncodingVersion((byte)1, (byte)0);
public final static EncodingVersion Encoding_1_1 = new EncodingVersion((byte)1, (byte)1);
private static java.lang.Object _processLoggerMutex = new java.lang.Object();
private static Logger _processLogger = null;
static private String[] _iceTypeIdPrefixes =
{
"::Glacier2::",
"::Ice::",
"::IceBox::",
"::IceDiscovery::",
"::IceGrid::",
"::IceLocatorDiscovery::",
"::IceMX::",
"::IcePatch2::",
"::IceStorm::"
};
}
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