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Java CacheMap类代码示例

本文整理汇总了Java中com.sun.jmx.remote.util.CacheMap的典型用法代码示例。如果您正苦于以下问题:Java CacheMap类的具体用法?Java CacheMap怎么用?Java CacheMap使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。


CacheMap类属于com.sun.jmx.remote.util包,在下文中一共展示了CacheMap类的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: delegatedContext

import com.sun.jmx.remote.util.CacheMap; //导入依赖的package包/类
public synchronized AccessControlContext
    delegatedContext(AccessControlContext authenticatedACC,
                     Subject delegatedSubject,
                     boolean removeCallerContext)
        throws SecurityException {

    if (principalsCache == null || accCache == null) {
        principalsCache =
                new CacheMap<Subject, Principal[]>(PRINCIPALS_CACHE_SIZE);
        accCache =
                new CacheMap<Subject, AccessControlContext>(ACC_CACHE_SIZE);
    }

    // Retrieve the principals for the given
    // delegated subject from the cache
    //
    Principal[] delegatedPrincipals = principalsCache.get(delegatedSubject);

    // Convert the set of principals stored in the
    // delegated subject into an array of principals
    // and store it in the cache
    //
    if (delegatedPrincipals == null) {
        delegatedPrincipals =
            delegatedSubject.getPrincipals().toArray(new Principal[0]);
        principalsCache.put(delegatedSubject, delegatedPrincipals);
    }

    // Retrieve the access control context for the
    // given delegated subject from the cache
    //
    AccessControlContext delegatedACC = accCache.get(delegatedSubject);

    // Build the access control context to be used
    // when executing code as the delegated subject
    // and store it in the cache
    //
    if (delegatedACC == null) {
        if (removeCallerContext) {
            delegatedACC =
                JMXSubjectDomainCombiner.getDomainCombinerContext(
                                                          delegatedSubject);
        } else {
            delegatedACC =
                JMXSubjectDomainCombiner.getContext(delegatedSubject);
        }
        accCache.put(delegatedSubject, delegatedACC);
    }

    // Check if the subject delegation permission allows the
    // authenticated subject to assume the identity of each
    // principal in the delegated subject
    //
    final Principal[] dp = delegatedPrincipals;
    PrivilegedAction<Void> action =
        new PrivilegedAction<Void>() {
            public Void run() {
                for (int i = 0 ; i < dp.length ; i++) {
                    final String pname =
                        dp[i].getClass().getName() + "." + dp[i].getName();
                    Permission sdp =
                        new SubjectDelegationPermission(pname);
                    AccessController.checkPermission(sdp);
                }
                return null;
            }
        };
    AccessController.doPrivileged(action, authenticatedACC);

    return delegatedACC;
}
 
开发者ID:openjdk,项目名称:jdk7-jdk,代码行数:72,代码来源:SubjectDelegator.java

示例2: delegatedContext

import com.sun.jmx.remote.util.CacheMap; //导入依赖的package包/类
public synchronized AccessControlContext
    delegatedContext(AccessControlContext authenticatedACC,
                     Subject delegatedSubject,
                     boolean removeCallerContext)
        throws SecurityException {

    if (System.getSecurityManager() != null && authenticatedACC == null) {
        throw new SecurityException("Illegal AccessControlContext: null");
    }
    if (principalsCache == null || accCache == null) {
        principalsCache =
                new CacheMap<>(PRINCIPALS_CACHE_SIZE);
        accCache =
                new CacheMap<>(ACC_CACHE_SIZE);
    }

    // Retrieve the principals for the given
    // delegated subject from the cache
    //
    Principal[] delegatedPrincipals = principalsCache.get(delegatedSubject);

    // Convert the set of principals stored in the
    // delegated subject into an array of principals
    // and store it in the cache
    //
    if (delegatedPrincipals == null) {
        delegatedPrincipals =
            delegatedSubject.getPrincipals().toArray(new Principal[0]);
        principalsCache.put(delegatedSubject, delegatedPrincipals);
    }

    // Retrieve the access control context for the
    // given delegated subject from the cache
    //
    AccessControlContext delegatedACC = accCache.get(delegatedSubject);

    // Build the access control context to be used
    // when executing code as the delegated subject
    // and store it in the cache
    //
    if (delegatedACC == null) {
        if (removeCallerContext) {
            delegatedACC =
                JMXSubjectDomainCombiner.getDomainCombinerContext(
                                                          delegatedSubject);
        } else {
            delegatedACC =
                JMXSubjectDomainCombiner.getContext(delegatedSubject);
        }
        accCache.put(delegatedSubject, delegatedACC);
    }

    // Check if the subject delegation permission allows the
    // authenticated subject to assume the identity of each
    // principal in the delegated subject
    //
    final Principal[] dp = delegatedPrincipals;
    final Collection<Permission> permissions = new ArrayList<>(dp.length);
    for(Principal p : dp) {
        final String pname = p.getClass().getName() + "." + p.getName();
        permissions.add(new SubjectDelegationPermission(pname));
    }
    PrivilegedAction<Void> action =
        new PrivilegedAction<Void>() {
            public Void run() {
                for (Permission sdp : permissions) {
                    AccessController.checkPermission(sdp);
                }
                return null;
            }
        };
    AccessController.doPrivileged(action, authenticatedACC);

    return delegatedACC;
}
 
开发者ID:greghaskins,项目名称:openjdk-jdk7u-jdk,代码行数:76,代码来源:SubjectDelegator.java


注:本文中的com.sun.jmx.remote.util.CacheMap类示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。