sun.management.snmp.util.SnmpTableHandler Java Examples

protected boolean contains(SnmpOid oid, Object userData) {

        // Get the handler.
        //
        SnmpTableHandler handler = getHandler(userData);

        // handler should never be null.
        //
        if (handler == null)
            return false;
        if(!handler.contains(oid))
            return false;

        JvmThreadInstanceEntryImpl inst = getJvmThreadInstance(userData, oid);
        return (inst != null);
    }
 

/**
 * WARNING: This should probably be moved to JvmMemPoolTableMetaImpl
 **/
private int findInCache(SnmpTableHandler handler,
                        String poolName) {

    if (!(handler instanceof SnmpCachedData)) {
        if (handler != null) {
            final String err = "Bad class for JvmMemPoolTable datas: " +
                handler.getClass().getName();
            log.error("getJvmMemPoolEntry", err);
        }
        return -1;
    }

    final SnmpCachedData data = (SnmpCachedData)handler;
    final int len = data.datas.length;
    for (int i=0; i < data.datas.length ; i++) {
        final MemoryPoolMXBean pool = (MemoryPoolMXBean) data.datas[i];
        if (poolName.equals(pool.getName())) return i;
    }
    return -1;
}
 

/**
 * Returns the index that immediately follows the given
 * <var>index</var>. The returned index is strictly greater
 * than the given <var>index</var>, and is contained in the table.
 * <br>If the given <var>index</var> is null, returns the first
 * index in the table.
 * <br>If there are no index after the given <var>index</var>,
 * returns null.
 **/
public SnmpOid getNext(SnmpTableHandler handler, SnmpOid index) {

    // try to call the optimized method
    if (handler instanceof SnmpCachedData)
        return getNext((SnmpCachedData)handler, index);

    // too bad - revert to non-optimized generic algorithm
    SnmpOid next = index;
    do {
        next = handler.getNext(next);
        final Object value = handler.getData(next);
        if (value instanceof GarbageCollectorMXBean)
            // That's the next! return it
            return next;
        // skip to next index...
    } while (next != null);
    return null;
}
 

/**
 * Return a table handler that holds the jvmMemManagerTable table data.
 * This method return the cached table data if it is still
 * valid, recompute it and cache the new value if it's not.
 * If it needs to recompute the cached data, it first
 * try to obtain the list of memory managers from the request
 * contextual cache, and if it is not found, it calls
 * <code>ManagementFactory.getMemoryMBean().getMemoryManagers()</code>
 * and caches the value.
 * This ensures that
 * <code>ManagementFactory.getMemoryMBean().getMemoryManagers()</code>
 * is not called more than once per request, thus ensuring a
 * consistent view of the table.
 **/
protected SnmpCachedData updateCachedDatas(Object userData) {
    // Get the MemoryManager     table
    final SnmpTableHandler mmHandler =
        meta.getManagerHandler(userData);

    // Get the MemoryPool        table
    final SnmpTableHandler mpHandler =
        meta.getPoolHandler(userData);

    // Time stamp for the cache
    final long time = System.currentTimeMillis();

    //     Build a Map poolname -> index
    final Map<String,SnmpOid> poolIndexMap = buildPoolIndexMap(mpHandler);

    // For each memory manager, get the list of memory pools
    // For each memory pool, find its index in the memory pool table
    // Create a row in the relation table.
    final TreeMap<SnmpOid, Object> table =
            new TreeMap<>(SnmpCachedData.oidComparator);
    updateTreeMap(table,userData,mmHandler,mpHandler,poolIndexMap);

    return new SnmpCachedData(time,table);
}
 

protected boolean contains(SnmpOid oid, Object userData) {

        // Get the handler.
        //
        SnmpTableHandler handler = getHandler(userData);

        // handler should never be null.
        //
        if (handler == null)
            return false;
        if(!handler.contains(oid))
            return false;

        JvmThreadInstanceEntryImpl inst = getJvmThreadInstance(userData, oid);
        return (inst != null);
    }
 

protected boolean contains(SnmpOid oid, Object userData) {

        // Get the handler.
        //
        SnmpTableHandler handler = getHandler(userData);

        // handler should never be null.
        //
        if (handler == null)
            return false;
        if(!handler.contains(oid))
            return false;

        JvmThreadInstanceEntryImpl inst = getJvmThreadInstance(userData, oid);
        return (inst != null);
    }
 

/**
 * WARNING: This should probably be moved to JvmMemPoolTableMetaImpl
 **/
private int findInCache(SnmpTableHandler handler,
                        String poolName) {

    if (!(handler instanceof SnmpCachedData)) {
        if (handler != null) {
            final String err = "Bad class for JvmMemPoolTable datas: " +
                handler.getClass().getName();
            log.error("getJvmMemPoolEntry", err);
        }
        return -1;
    }

    final SnmpCachedData data = (SnmpCachedData)handler;
    final int len = data.datas.length;
    for (int i=0; i < data.datas.length ; i++) {
        final MemoryPoolMXBean pool = (MemoryPoolMXBean) data.datas[i];
        if (poolName.equals(pool.getName())) return i;
    }
    return -1;
}
 

/**
 * Returns the index that immediately follows the given
 * <var>index</var>. The returned index is strictly greater
 * than the given <var>index</var>, and is contained in the table.
 * <br>If the given <var>index</var> is null, returns the first
 * index in the table.
 * <br>If there are no index after the given <var>index</var>,
 * returns null.
 **/
public SnmpOid getNext(SnmpTableHandler handler, SnmpOid index) {

    // try to call the optimized method
    if (handler instanceof SnmpCachedData)
        return getNext((SnmpCachedData)handler, index);

    // too bad - revert to non-optimized generic algorithm
    SnmpOid next = index;
    do {
        next = handler.getNext(next);
        final Object value = handler.getData(next);
        if (value instanceof GarbageCollectorMXBean)
            // That's the next! return it
            return next;
        // skip to next index...
    } while (next != null);
    return null;
}
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    final boolean dbg = log.isDebugOn();
    try {
        if (dbg) log.debug("getNextOid", "previous=" + oid);

        // Get the data handler.
        //
        SnmpTableHandler handler = getHandler(userData);
        if (handler == null) {
            // This should never happen.
            // If we get here it's a bug.
            //
            if (dbg) log.debug("getNextOid", "handler is null!");
            throw new
                SnmpStatusException(SnmpStatusException.noSuchInstance);
        }


        // Get the next oid, using the GC filter.
        //
        final SnmpOid next = filter.getNext(handler,oid);
        if (dbg) log.debug("getNextOid", "next=" + next);

        // if next is null: we reached the end of the table.
        //
        if (next == null)
            throw new
                SnmpStatusException(SnmpStatusException.noSuchInstance);

        return next;
    } catch (RuntimeException x) {
        // debug. This should never happen.
        //
        if (dbg) log.debug("getNextOid",x);
        throw x;
    }
}
 

/**
 * Returns the data associated with the given index.
 * If the given index is not found, null is returned.
 * Note that returning null does not necessarily means that
 * the index was not found.
 **/
public Object  getData(SnmpTableHandler handler, SnmpOid index) {
    final Object value = handler.getData(index);
    if (value instanceof GarbageCollectorMXBean) return value;
    // Behaves as if there was nothing at this index...
    //
    return null;
}
 

protected boolean contains(SnmpOid oid, Object userData) {

        // Get the handler.
        //
        SnmpTableHandler handler = getHandler(userData);

        // handler should never be null.
        //
        if (handler == null)
            return false;

        return handler.contains(oid);
    }
 

protected boolean contains(SnmpOid oid, Object userData) {

        // Get the handler.
        //
        SnmpTableHandler handler = getHandler(userData);

        // handler should never be null.
        //
        if (handler == null)
            return false;

        return handler.contains(oid);
    }
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    final boolean dbg = log.isDebugOn();
    try {
        if (dbg) log.debug("getNextOid", "previous=" + oid);


        // Get the data handler.
        //
        SnmpTableHandler handler = getHandler(userData);
        if (handler == null) {
            // This should never happen.
            // If we get here it's a bug.
            //
            if (dbg) log.debug("getNextOid", "handler is null!");
            throw new
                SnmpStatusException(SnmpStatusException.noSuchInstance);
        }

        // Get the next oid
        //
        final SnmpOid next = handler.getNext(oid);
        if (dbg) log.debug("getNextOid", "next=" + next);

        // if next is null: we reached the end of the table.
        //
        if (next == null)
            throw new
                SnmpStatusException(SnmpStatusException.noSuchInstance);

        return next;
    } catch (SnmpStatusException x) {
        if (dbg) log.debug("getNextOid", "End of MIB View: " + x);
        throw x;
    } catch (RuntimeException r) {
        if (dbg) log.debug("getNextOid", "Unexpected exception: " + r);
        if (dbg) log.debug("getNextOid",r);
        throw r;
    }
}
 

protected void updateTreeMap(TreeMap<SnmpOid, Object> table, Object userData,
                             SnmpCachedData mmHandler,
                             SnmpTableHandler mpHandler,
                             Map<String, SnmpOid> poolIndexMap) {

    final SnmpOid[] indexes = mmHandler.indexes;
    final Object[]  datas   = mmHandler.datas;
    final int size = indexes.length;
    for (int i=size-1; i>-1; i--) {
        final MemoryManagerMXBean mmm =
            (MemoryManagerMXBean)datas[i];
        if (mmm == null) continue;
        updateTreeMap(table,userData,mmm,indexes[i],poolIndexMap);
    }
}
 

protected boolean contains(SnmpOid oid, Object userData) {

        // Get the handler.
        //
        SnmpTableHandler handler = getHandler(userData);

        // handler should never be null.
        //
        if (handler == null)
            return false;

        return handler.contains(oid);
    }
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    final boolean dbg = log.isDebugOn();
    try {
        if (dbg) log.debug("getNextOid", "previous=" + oid);


        // Get the data handler.
        //
        SnmpTableHandler handler = getHandler(userData);
        if (handler == null) {
            // This should never happen.
            // If we get here it's a bug.
            //
            if (dbg) log.debug("getNextOid", "handler is null!");
            throw new
                SnmpStatusException(SnmpStatusException.noSuchInstance);
        }

        // Get the next oid
        //
        final SnmpOid next = handler.getNext(oid);
        if (dbg) log.debug("getNextOid", "next=" + next);

        // if next is null: we reached the end of the table.
        //
        if (next == null)
            throw new
                SnmpStatusException(SnmpStatusException.noSuchInstance);

        return next;
    } catch (SnmpStatusException x) {
        if (dbg) log.debug("getNextOid", "End of MIB View: " + x);
        throw x;
    } catch (RuntimeException r) {
        if (dbg) log.debug("getNextOid", "Unexpected exception: " + r);
        if (dbg) log.debug("getNextOid",r);
        throw r;
    }
}
 

/**
 * WARNING: This should probably be moved to JvmMemPoolTableMetaImpl
 **/
private SnmpOid getJvmMemPoolEntryIndex(SnmpTableHandler handler,
                                        String poolName) {
    final int index = findInCache(handler,poolName);
    if (index < 0) return null;
    return ((SnmpCachedData)handler).indexes[index];
}
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    final boolean dbg = log.isDebugOn();
    if (dbg) log.debug("getNextOid", "previous=" + oid);


    // Get the data handler.
    //
    SnmpTableHandler handler = getHandler(userData);
    if (handler == null) {
        // This should never happen.
        // If we get here it's a bug.
        //
        if (dbg) log.debug("getNextOid", "handler is null!");
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);
    }

    // Get the next oid
    //
    final SnmpOid next = handler.getNext(oid);
    if (dbg) log.debug("*** **** **** **** getNextOid", "next=" + next);

    // if next is null: we reached the end of the table.
    //
    if (next == null)
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);

    return next;
}
 

/**
 * WARNING: This should probably be moved to JvmMemPoolTableMetaImpl
 **/
private SnmpTableHandler getJvmMemPoolTableHandler(Object userData) {
    final SnmpMibTable meta =
        getRegisteredTableMeta("JvmMemPoolTable");
    if (! (meta instanceof JvmMemPoolTableMetaImpl)) {
        final String err = ((meta==null)?"No metadata for JvmMemPoolTable":
                            "Bad metadata class for JvmMemPoolTable: " +
                            meta.getClass().getName());
        log.error("getJvmMemPoolTableHandler", err);
        return null;
    }
    final JvmMemPoolTableMetaImpl memPoolTable =
        (JvmMemPoolTableMetaImpl) meta;
    return memPoolTable.getHandler(userData);
}
 

public Object getEntry(SnmpOid oid)
    throws SnmpStatusException {
    log.debug("*** **** **** **** getEntry", "oid [" + oid + "]");
    if (oid == null || oid.getLength() != 8) {
        log.debug("getEntry", "Invalid oid [" + oid + "]");
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);
    }

    // Get the request contextual cache (userData).
    //
    final Map<Object,Object> m = JvmContextFactory.getUserData();

    // Get the handler.
    //
    SnmpTableHandler handler = getHandler(m);

    // handler should never be null.
    //
    if (handler == null || !handler.contains(oid))
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);

    final JvmThreadInstanceEntryImpl entry = getJvmThreadInstance(m,oid);

    if (entry == null)
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);

    return entry;
}
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    final boolean dbg = log.isDebugOn();
    try {
        if (dbg) log.debug("getNextOid", "previous=" + oid);

        // Get the data handler.
        //
        SnmpTableHandler handler = getHandler(userData);
        if (handler == null) {
            // This should never happen.
            // If we get here it's a bug.
            //
            if (dbg) log.debug("getNextOid", "handler is null!");
            throw new
                SnmpStatusException(SnmpStatusException.noSuchInstance);
        }


        // Get the next oid, using the GC filter.
        //
        final SnmpOid next = filter.getNext(handler,oid);
        if (dbg) log.debug("getNextOid", "next=" + next);

        // if next is null: we reached the end of the table.
        //
        if (next == null)
            throw new
                SnmpStatusException(SnmpStatusException.noSuchInstance);

        return next;
    } catch (RuntimeException x) {
        // debug. This should never happen.
        //
        if (dbg) log.debug("getNextOid",x);
        throw x;
    }
}
 

/**
 * Returns true if the given <var>index</var> is present.
 **/
public boolean contains(SnmpTableHandler handler, SnmpOid index) {
    if (handler.getData(index) instanceof GarbageCollectorMXBean)
        return true;
    // Behaves as if there was nothing at this index...
    //
    return false;
}
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    log.debug("getNextOid", "previous=" + oid);


    // Get the data handler.
    //
    SnmpTableHandler handler = getHandler(userData);
    if (handler == null) {
        // This should never happen.
        // If we get here it's a bug.
        //
        log.debug("getNextOid", "handler is null!");
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);
    }

    // Get the next oid
    //
    SnmpOid next = oid;
    while(true) {
        next = handler.getNext(next);
        if (next == null) break;
        if (getJvmThreadInstance(userData,next) != null) break;
    }

    log.debug("*** **** **** **** getNextOid", "next=" + next);

    // if next is null: we reached the end of the table.
    //
    if (next == null)
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);

    return next;
}
 

protected boolean contains(SnmpOid oid, Object userData) {

        // Get the handler.
        //
        SnmpTableHandler handler = getHandler(userData);

        // handler should never be null.
        //
        if (handler == null)
            return false;

        return handler.contains(oid);
    }
 

protected boolean contains(SnmpOid oid, Object userData) {

        // Get the handler.
        //
        SnmpTableHandler handler = getHandler(userData);

        // handler should never be null.
        //
        if (handler == null)
            return false;

        return handler.contains(oid);
    }
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    log.debug("getNextOid", "previous=" + oid);


    // Get the data handler.
    //
    SnmpTableHandler handler = getHandler(userData);
    if (handler == null) {
        // This should never happen.
        // If we get here it's a bug.
        //
        log.debug("getNextOid", "handler is null!");
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);
    }

    // Get the next oid
    //
    SnmpOid next = oid;
    while(true) {
        next = handler.getNext(next);
        if (next == null) break;
        if (getJvmThreadInstance(userData,next) != null) break;
    }

    log.debug("*** **** **** **** getNextOid", "next=" + next);

    // if next is null: we reached the end of the table.
    //
    if (next == null)
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);

    return next;
}
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    final boolean dbg = log.isDebugOn();
    if (dbg) log.debug("getNextOid", "previous=" + oid);


    // Get the data handler.
    //
    SnmpTableHandler handler = getHandler(userData);
    if (handler == null) {
        // This should never happen.
        // If we get here it's a bug.
        //
        if (dbg) log.debug("getNextOid", "handler is null!");
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);
    }

    // Get the next oid
    //
    final SnmpOid next = handler.getNext(oid);
    if (dbg) log.debug("*** **** **** **** getNextOid", "next=" + next);

    // if next is null: we reached the end of the table.
    //
    if (next == null)
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);

    return next;
}
 

protected boolean contains(SnmpOid oid, Object userData) {

        // Get the handler.
        //
        SnmpTableHandler handler = getHandler(userData);

        // handler should never be null.
        //
        if (handler == null)
            return false;

        return handler.contains(oid);
    }
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    final boolean dbg = log.isDebugOn();
    if (dbg) log.debug("getNextOid", "previous=" + oid);


    // Get the data handler.
    //
    SnmpTableHandler handler = getHandler(userData);
    if (handler == null) {
        // This should never happen.
        // If we get here it's a bug.
        //
        if (dbg) log.debug("getNextOid", "handler is null!");
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);
    }

    // Get the next oid
    //
    final SnmpOid next = handler.getNext(oid);
    if (dbg) log.debug("*** **** **** **** getNextOid", "next=" + next);

    // if next is null: we reached the end of the table.
    //
    if (next == null)
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);

    return next;
}
 

protected SnmpOid getNextOid(SnmpOid oid, Object userData)
    throws SnmpStatusException {
    final boolean dbg = log.isDebugOn();
    if (dbg) log.debug("getNextOid", "previous=" + oid);


    // Get the data handler.
    //
    SnmpTableHandler handler = getHandler(userData);
    if (handler == null) {
        // This should never happen.
        // If we get here it's a bug.
        //
        if (dbg) log.debug("getNextOid", "handler is null!");
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);
    }

    // Get the next oid
    //
    final SnmpOid next = handler.getNext(oid);
    if (dbg) log.debug("*** **** **** **** getNextOid", "next=" + next);

    // if next is null: we reached the end of the table.
    //
    if (next == null)
        throw new SnmpStatusException(SnmpStatusException.noSuchInstance);

    return next;
}