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/*
* SonarQube, open source software quality management tool.
* Copyright (C) 2008-2014 SonarSource
* mailto:contact AT sonarsource DOT com
*
* SonarQube is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* SonarQube 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.api.batch.rule;
import com.google.common.collect.Maps;
import org.apache.commons.lang.StringUtils;
import org.sonar.api.rule.RuleKey;
import org.sonar.api.utils.AnnotationUtils;
import org.sonar.api.utils.FieldUtils2;
import org.sonar.api.utils.SonarException;
import org.sonar.check.RuleProperty;
import javax.annotation.CheckForNull;
import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
/**
* Instantiates checks (objects that provide implementation of coding
* rules) that use sonar-check-api annotations. Checks are selected and configured
* from the Quality profiles enabled on the current module.
*
* Example of check class:
*
* public class MyRuleEngine extends BatchExtension {
* private final CheckFactory checkFactory;
*
* public MyRuleEngine(CheckFactory checkFactory) {
* this.checkFactory = checkFactory;
* }
*
* public void execute() {
* Checks checks = checkFactory.create("my-rule-repository");
* checks.addAnnotatedChecks(CheckS001.class);
* // checks.all() contains an instance of CheckS001
* // with field "pattern" set to the value specified in
* // the Quality profile
*
* // Checks are used to detect issues on source code
*
* // checks.ruleKey(obj) can be used to create the related issues
* }
* }
*
*
* It replaces org.sonar.api.checks.AnnotationCheckFactory
*
* @since 4.2
*/
public class Checks {
private final ActiveRules activeRules;
private final String repository;
private final Map checkByRule = Maps.newHashMap();
private final Map ruleByCheck = Maps.newIdentityHashMap();
Checks(ActiveRules activeRules, String repository) {
this.activeRules = activeRules;
this.repository = repository;
}
@CheckForNull
public C of(RuleKey ruleKey) {
return checkByRule.get(ruleKey);
}
public Collection all() {
return checkByRule.values();
}
@CheckForNull
public RuleKey ruleKey(C check) {
return ruleByCheck.get(check);
}
private void add(RuleKey ruleKey, C obj) {
checkByRule.put(ruleKey, obj);
ruleByCheck.put(obj, ruleKey);
}
public Checks addAnnotatedChecks(Object... checkClassesOrObjects) {
return addAnnotatedChecks(Arrays.asList(checkClassesOrObjects));
}
public Checks addAnnotatedChecks(Collection checkClassesOrObjects) {
Map checksByEngineKey = Maps.newHashMap();
for (Object checkClassesOrObject : checkClassesOrObjects) {
String engineKey = annotatedEngineKey(checkClassesOrObject);
if (engineKey != null) {
checksByEngineKey.put(engineKey, checkClassesOrObject);
}
}
for (ActiveRule activeRule : activeRules.findByRepository(repository)) {
String engineKey = StringUtils.defaultIfBlank(activeRule.templateRuleKey(), activeRule.ruleKey().rule());
Object checkClassesOrObject = checksByEngineKey.get(engineKey);
if (checkClassesOrObject != null) {
Object obj = instantiate(activeRule, checkClassesOrObject);
add(activeRule.ruleKey(), (C) obj);
}
}
return this;
}
private String annotatedEngineKey(Object annotatedClassOrObject) {
String key = null;
org.sonar.check.Rule ruleAnnotation = AnnotationUtils.getAnnotation(annotatedClassOrObject, org.sonar.check.Rule.class);
if (ruleAnnotation != null) {
key = ruleAnnotation.key();
}
Class clazz = annotatedClassOrObject.getClass();
if (annotatedClassOrObject instanceof Class) {
clazz = (Class) annotatedClassOrObject;
}
return StringUtils.defaultIfEmpty(key, clazz.getCanonicalName());
}
private Object instantiate(ActiveRule activeRule, Object checkClassOrInstance) {
try {
Object check = checkClassOrInstance;
if (check instanceof Class) {
check = ((Class) checkClassOrInstance).newInstance();
}
configureFields(activeRule, check);
return check;
} catch (InstantiationException e) {
throw failToInstantiateCheck(activeRule, checkClassOrInstance, e);
} catch (IllegalAccessException e) {
throw failToInstantiateCheck(activeRule, checkClassOrInstance, e);
}
}
private RuntimeException failToInstantiateCheck(ActiveRule activeRule, Object checkClassOrInstance, Exception e) {
throw new IllegalStateException(String.format("Fail to instantiate class %s for rule %s", checkClassOrInstance, activeRule.ruleKey()), e);
}
private void configureFields(ActiveRule activeRule, Object check) {
for (Map.Entry param : activeRule.params().entrySet()) {
Field field = getField(check, param.getKey());
if (field == null) {
throw new IllegalStateException(
String.format("The field '%s' does not exist or is not annotated with @RuleProperty in the class %s", param.getKey(), check.getClass().getName()));
}
if (StringUtils.isNotBlank(param.getValue())) {
configureField(check, field, param.getValue());
}
}
}
@CheckForNull
private Field getField(Object check, String key) {
List fields = FieldUtils2.getFields(check.getClass(), true);
for (Field field : fields) {
RuleProperty propertyAnnotation = field.getAnnotation(RuleProperty.class);
if (propertyAnnotation != null && (StringUtils.equals(key, field.getName()) || StringUtils.equals(key, propertyAnnotation.key()))) {
return field;
}
}
return null;
}
private void configureField(Object check, Field field, String value) {
try {
field.setAccessible(true);
if (field.getType().equals(String.class)) {
field.set(check, value);
} else if ("int".equals(field.getType().getSimpleName())) {
field.setInt(check, Integer.parseInt(value));
} else if ("short".equals(field.getType().getSimpleName())) {
field.setShort(check, Short.parseShort(value));
} else if ("long".equals(field.getType().getSimpleName())) {
field.setLong(check, Long.parseLong(value));
} else if ("double".equals(field.getType().getSimpleName())) {
field.setDouble(check, Double.parseDouble(value));
} else if ("boolean".equals(field.getType().getSimpleName())) {
field.setBoolean(check, Boolean.parseBoolean(value));
} else if ("byte".equals(field.getType().getSimpleName())) {
field.setByte(check, Byte.parseByte(value));
} else if (field.getType().equals(Integer.class)) {
field.set(check, Integer.parseInt(value));
} else if (field.getType().equals(Long.class)) {
field.set(check, Long.parseLong(value));
} else if (field.getType().equals(Double.class)) {
field.set(check, Double.parseDouble(value));
} else if (field.getType().equals(Boolean.class)) {
field.set(check, Boolean.parseBoolean(value));
} else {
throw new SonarException("The type of the field " + field + " is not supported: " + field.getType());
}
} catch (IllegalAccessException e) {
throw new SonarException("Can not set the value of the field " + field + " in the class: " + check.getClass().getName(), e);
}
}
}
