/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package groovy.grape;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.net.URI;
/**
* Facade to GrapeEngine.
*/
public class Grape {
public static final String AUTO_DOWNLOAD_SETTING = "autoDownload";
public static final String DISABLE_CHECKSUMS_SETTING = "disableChecksums";
public static final String SYSTEM_PROPERTIES_SETTING = "systemProperties";
private static boolean enableGrapes = Boolean.valueOf(System.getProperty("groovy.grape.enable", "true"));
private static boolean enableAutoDownload = Boolean.valueOf(System.getProperty("groovy.grape.autoDownload", "true"));
private static boolean disableChecksums = Boolean.valueOf(System.getProperty("groovy.grape.disableChecksums", "false"));
protected static GrapeEngine instance;
/**
* This is a static access kill-switch. All of the static shortcut
* methods in this class will not work if this property is set to false.
* By default it is set to true.
*/
public static boolean getEnableGrapes() {
return enableGrapes;
}
/**
* This is a static access kill-switch. All of the static shortcut
* methods in this class will not work if this property is set to false.
* By default it is set to true.
*/
public static void setEnableGrapes(boolean enableGrapes) {
Grape.enableGrapes = enableGrapes;
}
/**
* This is a static access auto download enabler. It will set the
* 'autoDownload' value to the passed in arguments map if not already set.
* If 'autoDownload' is set the value will not be adjusted.
* <p>
* This applies to the grab and resolve calls.
* <p>
* If it is set to false, only previously downloaded grapes
* will be used. This may cause failure in the grape call
* if the library has not yet been downloaded
* <p>
* If it is set to true, then any jars not already downloaded will
* automatically be downloaded. Also, any versions expressed as a range
* will be checked for new versions and downloaded (with dependencies)
* if found.
* <p>
* By default it is set to true.
*/
public static boolean getEnableAutoDownload() {
return enableAutoDownload;
}
/**
* This is a static access auto download enabler. It will set the
* 'autoDownload' value to the passed in arguments map if not already
* set. If 'autoDownload' is set the value will not be adjusted.
* <p>
* This applies to the grab and resolve calls.
* <p>
* If it is set to false, only previously downloaded grapes
* will be used. This may cause failure in the grape call
* if the library has not yet been downloaded.
* <p>
* If it is set to true, then any jars not already downloaded will
* automatically be downloaded. Also, any versions expressed as a range
* will be checked for new versions and downloaded (with dependencies)
* if found. By default it is set to true.
*/
public static void setEnableAutoDownload(boolean enableAutoDownload) {
Grape.enableAutoDownload = enableAutoDownload;
}
/**
* Global flag to ignore checksums.
* By default it is set to false.
*/
public static boolean getDisableChecksums() {
return disableChecksums;
}
/**
* Set global flag to ignore checksums.
* By default it is set to false.
*/
public static void setDisableChecksums(boolean disableChecksums) {
Grape.disableChecksums = disableChecksums;
}
public static synchronized GrapeEngine getInstance() {
if (instance == null) {
try {
// by default use GrapeIvy
//TODO META-INF/services resolver?
instance = (GrapeEngine) Class.forName("groovy.grape.GrapeIvy").newInstance();
} catch (InstantiationException e) {
//LOGME
} catch (IllegalAccessException e) {
//LOGME
} catch (ClassNotFoundException e) {
//LOGME
}
}
return instance;
}
public static void grab(String endorsed) {
if (enableGrapes) {
GrapeEngine instance = getInstance();
if (instance != null) {
instance.grab(endorsed);
}
}
}
public static void grab(Map<String, Object> dependency) {
if (enableGrapes) {
GrapeEngine instance = getInstance();
if (instance != null) {
if (!dependency.containsKey(AUTO_DOWNLOAD_SETTING)) {
dependency.put(AUTO_DOWNLOAD_SETTING, enableAutoDownload);
}
if (!dependency.containsKey(DISABLE_CHECKSUMS_SETTING)) {
dependency.put(DISABLE_CHECKSUMS_SETTING, disableChecksums);
}
instance.grab(dependency);
}
}
}
public static void grab(Map<String, Object> args, Map... dependencies) {
if (enableGrapes) {
GrapeEngine instance = getInstance();
if (instance != null) {
if (!args.containsKey(AUTO_DOWNLOAD_SETTING)) {
args.put(AUTO_DOWNLOAD_SETTING, enableAutoDownload);
}
if (!args.containsKey(DISABLE_CHECKSUMS_SETTING)) {
args.put(DISABLE_CHECKSUMS_SETTING, disableChecksums);
}
instance.grab(args, dependencies);
}
}
}
public static Map<String, Map<String, List<String>>> enumerateGrapes() {
Map<String, Map<String, List<String>>> grapes = null;
if (enableGrapes) {
GrapeEngine instance = getInstance();
if (instance != null) {
grapes = instance.enumerateGrapes();
}
}
if (grapes == null) {
return Collections.emptyMap();
} else {
return grapes;
}
}
public static URI[] resolve(Map<String, Object> args, Map... dependencies) {
return resolve(args, null, dependencies);
}
public static URI[] resolve(Map<String, Object> args, List depsInfo, Map... dependencies) {
URI[] uris = null;
if (enableGrapes) {
GrapeEngine instance = getInstance();
if (instance != null) {
if (!args.containsKey(AUTO_DOWNLOAD_SETTING)) {
args.put(AUTO_DOWNLOAD_SETTING, enableAutoDownload);
}
if (!args.containsKey(DISABLE_CHECKSUMS_SETTING)) {
args.put(DISABLE_CHECKSUMS_SETTING, disableChecksums);
}
uris = instance.resolve(args, depsInfo, dependencies);
}
}
if (uris == null) {
return new URI[0];
} else {
return uris;
}
}
public static Map[] listDependencies(ClassLoader cl) {
Map[] maps = null;
if (enableGrapes) {
GrapeEngine instance = getInstance();
if (instance != null) {
maps = instance.listDependencies(cl);
}
}
if (maps == null) {
return new Map[0];
} else {
return maps;
}
}
public static void addResolver(Map<String, Object> args) {
if (enableGrapes) {
GrapeEngine instance = getInstance();
if (instance != null) {
instance.addResolver(args);
}
}
}
}