Java Environment.getConfig方法代碼示例

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
private CurrentTransaction(Environment env) {
    this.env = env;
    try {
        EnvironmentConfig config = env.getConfig();
        txnMode = config.getTransactional();
        lockingMode = DbCompat.getInitializeLocking(config);
        if (txnMode || lockingMode) {
            writeLockMode = LockMode.RMW;
        } else {
            writeLockMode = LockMode.DEFAULT;
        }
        cdbMode = DbCompat.getInitializeCDB(config);
        if (cdbMode) {
            localCdbCursors = new ThreadLocal();
        }
    } catch (DatabaseException e) {
        throw new RuntimeExceptionWrapper(e);
    }
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
private void checkAttribute(Environment env,
                            DynamicMBean mbean,
                            Method configMethod,
                            String attributeName,
                            Object newValue)
    throws Exception {
    /* check starting value. */
    EnvironmentConfig config = env.getConfig();
    Object result = configMethod.invoke(config, (Object []) null);
    assertTrue(!result.toString().equals(newValue.toString()));

    /* set through mbean */
    mbean.setAttribute(new Attribute(attributeName, newValue));

    /* check present environment config. */
    config = env.getConfig();
    assertEquals(newValue.toString(),
                 configMethod.invoke(config, (Object []) null).toString());

    /* check through mbean. */
    Object mbeanNewValue = mbean.getAttribute(attributeName);
    assertEquals(newValue.toString(), mbeanNewValue.toString());
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
private CurrentTransaction(Environment env) {
    envRef = new WeakReference<Environment>(env);
    try {
        EnvironmentConfig config = env.getConfig();
        txnMode = config.getTransactional();
        lockingMode = DbCompat.getInitializeLocking(config);
        if (txnMode || lockingMode) {
            writeLockMode = LockMode.RMW;
        } else {
            writeLockMode = LockMode.DEFAULT;
        }
        cdbMode = DbCompat.getInitializeCDB(config);
        if (cdbMode) {
            localCdbCursors = new ThreadLocal();
        }
    } catch (DatabaseException e) {
        throw RuntimeExceptionWrapper.wrapIfNeeded(e);
    }
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
private void checkAttribute(Environment env,
                            DynamicMBean mbean,
                            Method configMethod,
                            String attributeName,
                            Object newValue)
    throws Exception {
    /* check starting value. */
    EnvironmentConfig config = env.getConfig();
    Object result = configMethod.invoke(config, (Object []) null);
    assertTrue(!result.toString().equals(newValue.toString()));

    /* set through mbean */
    mbean.setAttribute(new Attribute(attributeName, newValue));

    /* check present environment config. */
    config = env.getConfig();
    assertEquals(newValue.toString(), 
                 configMethod.invoke(config, (Object []) null).toString());

    /* check through mbean. */
    Object mbeanNewValue = mbean.getAttribute(attributeName);
    assertEquals(newValue.toString(), mbeanNewValue.toString());
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
 * Get mbean operation metadata for this environment.
 *
 * @param targetEnv The target JE environment. May be null if the
 * environment is not open.
 * @return List of MBeanOperationInfo describing available operations.
 */
public List getOperationList(Environment targetEnv) {
    setNeedReset(false);

    List operationList = new ArrayList();

    if (targetEnv != null) {
        /*
         * These operations are only available if the environment is
         * open.
         */
        operationList.add(OP_CLEAN_INFO);
        operationList.add(OP_EVICT_INFO);
        operationList.add(OP_ENV_STAT_INFO);
        operationList.add(OP_LOCK_STAT_INFO);
        operationList.add(OP_DB_NAMES_INFO);
        operationList.add(OP_DB_STAT_INFO);

        /* Add checkpoint only for transactional environments. */
        boolean isTransactional = false;
        try {
            EnvironmentConfig config = targetEnv.getConfig();
            isTransactional = config.getTransactional();
        } catch (DatabaseException e) {
            /* Don't make any operations available. */
            return new ArrayList();
        }

        if (isTransactional) {
            operationList.add(OP_CHECKPOINT_INFO);
            operationList.add(OP_TXN_STAT_INFO);
        } else {
            operationList.add(OP_SYNC_INFO);
        }
    }

    return operationList;
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
public void setUp()
throws IOException, DatabaseException {

       TestUtils.removeFiles("Setup", envHome, FileManager.JE_SUFFIX);

       EnvironmentConfig envConfig = TestUtils.initEnvConfig();
       DbInternal.setLoadPropertyFile(envConfig, false);
       envConfig.setConfigParam(EnvironmentParams.NODE_MAX.getName(), "6");
       envConfig.setConfigParam
           (EnvironmentParams.ENV_RUN_INCOMPRESSOR.getName(), "false");
       envConfig.setConfigParam
           (EnvironmentParams.ENV_RUN_EVICTOR.getName(), "false");
       envConfig.setConfigParam
           (EnvironmentParams.ENV_RUN_CHECKPOINTER.getName(), "false");
       envConfig.setConfigParam
           (EnvironmentParams.ENV_RUN_CLEANER.getName(), "false");
       envConfig.setAllowCreate(true);
       env = new Environment(envHome, envConfig);

EnvironmentConfig envConfigAsSet = env.getConfig();
noLocking = !(envConfigAsSet.getLocking());

       DatabaseConfig dbConfig = new DatabaseConfig();
       dbConfig.setAllowCreate(true);
       dbConfig.setSortedDuplicates(true);
       myDb = env.openDatabase(null, "test", dbConfig);
   }
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
    * Check that all INs are removed from the INList for a DB that is removed
    * before it is sync'ed (or checkpointed).  Before the bug fix, INs were
    * not removed if the DB root IN was never logged (was still null).  This
    * caused a DatabaseException when evicting, because the evictor expects no
    * INs for deleted DBs on the INList.
    */
   public void testRemoveNonPersistentDbSR15317()
throws Throwable {

Database db = null;
try {
    EnvironmentConfig envConfig = getEnvConfig(true);
           /* Disable compressor for test predictability. */
           envConfig.setConfigParam("je.env.runINCompressor", "false");
    env = new Environment(envHome, envConfig);
    db = createDb(true);
           /* Insert some data to cause eviction later. */
           insert(db,
                  null,          // txn
                  1,             // start
                  30000,         // end
                  new HashSet(), // expected
                  false);        // useRandom
           db.close();
           env.removeDatabase(null, DBNAME);

           envConfig = env.getConfig();
           /* Switch to a small cache to force eviction. */
           envConfig.setCacheSize(96 * 1024);
           env.setMutableConfig(envConfig);
           for (int i = 0; i < 10; i += 1) {
               env.evictMemory();
           }
       } finally {
           if (env != null) {
               try {
                   env.close();
               } catch (Throwable e) {
                   System.out.println("Ignored: " + e);
               }
               env = null;
           }
       }
   }
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
 * Get mbean operation metadata for this environment.
 *
 * @param targetEnv The target JE environment. May be null if the
 * environment is not open.
 * @return List of MBeanOperationInfo describing available operations.
 */
public List<MBeanOperationInfo> getOperationList(Environment targetEnv) {
    setNeedReset(false);

    List<MBeanOperationInfo> operationList = 
        new ArrayList<MBeanOperationInfo>();

    if (targetEnv != null) {

        /*
         * These operations are only available if the environment is open.
         */
        operationList.add(OP_CLEAN_INFO);
        operationList.add(OP_EVICT_INFO);
        operationList.add(OP_ENV_STAT_INFO);
        operationList.add(OP_DB_NAMES_INFO);
        operationList.add(OP_DB_STAT_INFO);

        /* Add checkpoint only for transactional environments. */
        boolean isTransactional = false;
        try {
            EnvironmentConfig config = targetEnv.getConfig();
            isTransactional = config.getTransactional();
        } catch (DatabaseException e) {
            /* Don't make any operations available. */
            return new ArrayList<MBeanOperationInfo>();
        }

        if (isTransactional) {
            operationList.add(OP_CHECKPOINT_INFO);
            operationList.add(OP_TXN_STAT_INFO);
        } else {
            operationList.add(OP_SYNC_INFO);
        }
    }

    return operationList;
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
 * Get MBean attribute metadata for this environment.
 * @param targetEnv The target JE environment. May be null if the
 * environment is not open.
 * @return list of MBeanAttributeInfo objects describing the available
 * attributes.
 */
public List getAttributeList(Environment targetEnv) {

    /* Turn off reset because the mbean metadata is being refreshed. */
    setNeedReset(false);

    ArrayList attrList = new ArrayList();

    /* Add attributes for all JE environments. */
    for (int i = 0; i < COMMON_ATTR.length; i++) {
        attrList.add(COMMON_ATTR[i]);
    }

    if (targetEnv == null) {
        if (canConfigure) {
            /* Add attributes for configuring an environment. */
            for (int i = 0; i < CREATE_ATTR.length; i++) {
                attrList.add(CREATE_ATTR[i]);
            }
        }
    } else {
        /* Add attributes for an open environment. */
        for (int i = 0; i < OPEN_ATTR.length; i++) {
            attrList.add(OPEN_ATTR[i]);
        }

        /* Add attributes for an open, transactional environment. */
        try {
            EnvironmentConfig config = targetEnv.getConfig();
            if (config.getTransactional()) {
                for (int i = 0; i < TRANSACTIONAL_ATTR.length; i++) {
                    attrList.add(TRANSACTIONAL_ATTR[i]);
                }
            }
        } catch (DatabaseException ignore) {
        	/* ignore */
        }
    }

    return attrList;
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
 * Get an attribute value for the given environment. Check
 * JEMBeanHelper.getNeedReset() after this call because the helper may
 * detect that the environment has changed and that the MBean metadata
 * should be reset.
 *
 * @param targetEnv The target JE environment. May be null if the
 * environment is not open.
 * @param attributeName attribute name.
 * @return attribute value.
 */
public Object getAttribute(Environment targetEnv,
                           String attributeName)
    throws AttributeNotFoundException,
           MBeanException {

    /* Sanity check. */
    if (attributeName == null) {
        throw new AttributeNotFoundException(
                                        "Attribute name cannot be null");
    }

    /* These attributes are available regardless of environment state. */
    try {
        if (attributeName.equals(ATT_ENV_HOME)) {
            return environmentHome.getCanonicalPath();
        } else if (attributeName.equals(ATT_OPEN)) {
            boolean envIsOpen = (targetEnv != null);
            resetIfOpenStateChanged(envIsOpen);
            return new Boolean(envIsOpen);
        } else if (attributeName.equals(ATT_SET_READ_ONLY)) {
            return new Boolean(openConfig.getReadOnly());
        } else if (attributeName.equals(ATT_SET_TRANSACTIONAL)) {
            return new Boolean(openConfig.getTransactional());
        } else if (attributeName.equals(ATT_SET_SERIALIZABLE)) {
            return new Boolean(openConfig.getTxnSerializableIsolation());
        } else {
            /* The rest are JE environment attributes. */
            if (targetEnv != null) {

                EnvironmentConfig config = targetEnv.getConfig();

                if (attributeName.equals(ATT_IS_READ_ONLY)) {
                    return new Boolean(config.getReadOnly());
                } else if (attributeName.equals(ATT_IS_TRANSACTIONAL)) {
                    return new Boolean(config.getTransactional());
                } else if (attributeName.equals(ATT_CACHE_SIZE)) {
                    return new Long(config.getCacheSize());
                } else if (attributeName.equals(ATT_CACHE_PERCENT)) {
                    return new Integer(config.getCachePercent());
                } else if (attributeName.equals(ATT_LOCK_TIMEOUT)) {
                    return new Long(config.getLockTimeout());
                } else if (attributeName.equals(ATT_IS_SERIALIZABLE)) {
                    return new
                        Boolean(config.getTxnSerializableIsolation());
                } else if (attributeName.equals(ATT_TXN_TIMEOUT)) {
                    return new Long(config.getTxnTimeout());
                } else {
                    throw new AttributeNotFoundException("attribute " +
                                                         attributeName +
                                                         " is not valid.");
                }
            }
            return null;
        }
    } catch (Exception e) {
        /*
         * Add both the message and the exception for easiest deciphering
         * of the problem. Sometimes the original exception stacktrace gets
         * hidden in server logs.
         */
        throw new MBeanException(e, e.getMessage());
    }
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
 * Opens the environment.
 */
private void openEnv(boolean transactional)
    throws DatabaseException {

    EnvironmentConfig config = TestUtils.initEnvConfig();
    config.setTransactional(transactional);
    config.setAllowCreate(true);
    /* Do not run the daemons since they interfere with LN counting. */
    config.setConfigParam
        (EnvironmentParams.ENV_RUN_CLEANER.getName(), "false");
    config.setConfigParam
        (EnvironmentParams.ENV_RUN_EVICTOR.getName(), "false");
    config.setConfigParam
 (EnvironmentParams.ENV_RUN_CHECKPOINTER.getName(), "false");
    config.setConfigParam
        (EnvironmentParams.ENV_RUN_INCOMPRESSOR.getName(), "false");

    /* Use small nodes to test the post-txn scanning. */
    config.setConfigParam
        (EnvironmentParams.NODE_MAX.getName(), "10");
    config.setConfigParam
        (EnvironmentParams.NODE_MAX_DUPTREE.getName(), "10");

    /* Use small files to ensure that there is cleaning. */
    config.setConfigParam("je.cleaner.minUtilization", "90");
    DbInternal.disableParameterValidation(config);
    config.setConfigParam("je.log.fileMax", "4000");

    /* Obsolete LN size counting is optional per test. */
    if (fetchObsoleteSize) {
        config.setConfigParam
            (EnvironmentParams.CLEANER_FETCH_OBSOLETE_SIZE.getName(),
             "true");
    }

    env = new Environment(envHome, config);

    config = env.getConfig();
    dbEviction = config.getConfigParam
        (EnvironmentParams.ENV_DB_EVICTION.getName()).equals("true");
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
    * Tests that setting je.env.runCleaner=false stops the cleaner from
    * processing more files even if the target minUtilization is not met
    * [#15158].
    */
   public void testCleanerStop()
throws Throwable {

       final int fileSize = 1000000;
       EnvironmentConfig envConfig = TestUtils.initEnvConfig();
       envConfig.setAllowCreate(true);
       envConfig.setConfigParam
    (EnvironmentParams.ENV_RUN_CLEANER.getName(), "false");
       envConfig.setConfigParam
           (EnvironmentParams.LOG_FILE_MAX.getName(),
            Integer.toString(fileSize));
       envConfig.setConfigParam
    (EnvironmentParams.CLEANER_MIN_UTILIZATION.getName(), "80");
       Environment env = new Environment(envHome, envConfig);

       DatabaseConfig dbConfig = new DatabaseConfig();
       dbConfig.setAllowCreate(true);
       Database db = env.openDatabase(null, "CleanerStop", dbConfig);

       DatabaseEntry key = new DatabaseEntry(new byte[1]);
       DatabaseEntry data = new DatabaseEntry(new byte[fileSize]);
       for (int i = 0; i <= 10; i += 1) {
           db.put(null, key, data);
       }
       env.checkpoint(forceConfig);

       EnvironmentStats stats = env.getStats(null);
       assertEquals(0, stats.getNCleanerRuns());

       envConfig = env.getConfig();
       envConfig.setConfigParam
    (EnvironmentParams.ENV_RUN_CLEANER.getName(), "true");
       env.setMutableConfig(envConfig);

       int iter = 0;
       while (stats.getNCleanerRuns() == 0) {
           iter += 1;
           if (iter == 20) {
               fail("Cleaner did not run after " + iter + " tries");
           }
           Thread.yield();
           Thread.sleep(1);
           stats = env.getStats(null);
       }

       envConfig.setConfigParam
    (EnvironmentParams.ENV_RUN_CLEANER.getName(), "false");
       env.setMutableConfig(envConfig);

       int prevNFiles = stats.getNCleanerRuns();
       stats = env.getStats(null);
       int currNFiles = stats.getNCleanerRuns();
       if (currNFiles - prevNFiles > 5) {
           fail("Expected less than 5 files cleaned," +
                " prevNFiles=" + prevNFiles +
                " currNFiles=" + currNFiles);
       }

       //System.out.println("Num runs: " + stats.getNCleanerRuns());

db.close();
env.close();
   }
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
 * Exercise setters.
 */
public void testMBeanSetters()
    throws Throwable {

    Environment env = null;
    try {
        /* Mimic an application by opening an environment. */
        env = openEnv(false);

        /* Open an mbean and set the environment home. */
        DynamicMBean mbean = new JEMonitor(environmentDir);

        /*
         * Try setting different attributes. Check against the
         * initial value, and the value after setting.
         */
        EnvironmentConfig config = env.getConfig();
        Class configClass = config.getClass();

        Method getCacheSize = configClass.getMethod("getCacheSize", (Class []) null);
        checkAttribute(env,
                       mbean,
                       getCacheSize,
                       JEMBeanHelper.ATT_CACHE_SIZE,
                       new Long(100000)); // new value

        Method getCachePercent =
            configClass.getMethod("getCachePercent", (Class []) null);
        checkAttribute(env,
                       mbean,
                       getCachePercent,
                       JEMBeanHelper.ATT_CACHE_PERCENT,
                       new Integer(10));
        env.close();

        checkForNoOpenHandles(environmentDir);
    } catch (Throwable t) {
        t.printStackTrace();

        if (env != null) {
            env.close();
        }

        throw t;
    }
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
 * Get MBean attribute metadata for this environment.
 * @param targetEnv The target JE environment. May be null if the
 * environment is not open.
 * @return list of MBeanAttributeInfo objects describing the available
 * attributes.
 */
public List getAttributeList(Environment targetEnv) {

    /* Turn off reset because the mbean metadata is being refreshed. */
    setNeedReset(false);

    ArrayList attrList = new ArrayList();
    
    /* Add attributes for all JE environments. */
    for (int i = 0; i < COMMON_ATTR.length; i++) {
        attrList.add(COMMON_ATTR[i]);
    }

    if (targetEnv == null) {
        if (canConfigure) {
            /* Add attributes for configuring an environment. */
            for (int i = 0; i < CREATE_ATTR.length; i++) {
                attrList.add(CREATE_ATTR[i]);
            }
        }
    } else {
        /* Add attributes for an open environment. */
        for (int i = 0; i < OPEN_ATTR.length; i++) {
            attrList.add(OPEN_ATTR[i]);
        }

        /* Add attributes for an open, transactional environment. */
        try {
            EnvironmentConfig config = targetEnv.getConfig();
            if (config.getTransactional()) {
                for (int i = 0; i < TRANSACTIONAL_ATTR.length; i++) {
                    attrList.add(TRANSACTIONAL_ATTR[i]);
                }
            }
        } catch (DatabaseException ignore) {
        	/* ignore */
        }
    }

    return attrList;
}
 

import com.sleepycat.je.Environment; //導入方法依賴的package包/類
/**
 * Get an attribute value for the given environment. Check
 * JEMBeanHelper.getNeedReset() after this call because the helper may
 * detect that the environment has changed and that the MBean metadata
 * should be reset.
 *
 * @param targetEnv The target JE environment. May be null if the
 * environment is not open.
 * @param attributeName attribute name.
 * @return attribute value.
 */
public Object getAttribute(Environment targetEnv,
                           String attributeName) 
    throws AttributeNotFoundException,
           MBeanException {

    /* Sanity check. */
    if (attributeName == null) {
        throw new AttributeNotFoundException(
                                        "Attribute name cannot be null");
    }

    /* These attributes are available regardless of environment state. */
    try {
        if (attributeName.equals(ATT_ENV_HOME)) {
            return environmentHome.getCanonicalPath();
        } else if (attributeName.equals(ATT_OPEN)) {
            boolean envIsOpen = (targetEnv != null);
            resetIfOpenStateChanged(envIsOpen);
            return new Boolean(envIsOpen);
        } else if (attributeName.equals(ATT_SET_READ_ONLY)) {
            return new Boolean(openConfig.getReadOnly());
        } else if (attributeName.equals(ATT_SET_TRANSACTIONAL)) {
            return new Boolean(openConfig.getTransactional());
        } else if (attributeName.equals(ATT_SET_SERIALIZABLE)) {
            return new Boolean(openConfig.getTxnSerializableIsolation());
        } else {
            /* The rest are JE environment attributes. */
            if (targetEnv != null) {

                EnvironmentConfig config = targetEnv.getConfig();

                if (attributeName.equals(ATT_IS_READ_ONLY)) {
                    return new Boolean(config.getReadOnly());
                } else if (attributeName.equals(ATT_IS_TRANSACTIONAL)) {
                    return new Boolean(config.getTransactional());
                } else if (attributeName.equals(ATT_CACHE_SIZE)) {
                    return new Long(config.getCacheSize());
                } else if (attributeName.equals(ATT_CACHE_PERCENT)) {
                    return new Integer(config.getCachePercent());
                } else if (attributeName.equals(ATT_LOCK_TIMEOUT)) {
                    return new Long(config.getLockTimeout());
                } else if (attributeName.equals(ATT_IS_SERIALIZABLE)) {
                    return new
                        Boolean(config.getTxnSerializableIsolation());
                } else if (attributeName.equals(ATT_TXN_TIMEOUT)) {
                    return new Long(config.getTxnTimeout());
                } else {
                    throw new AttributeNotFoundException("attribute " +
                                                         attributeName +
                                                         " is not valid.");
                }
            } 
            return null; 
        }
    } catch (Exception e) {
        /*
         * Add both the message and the exception for easiest deciphering
         * of the problem. Sometimes the original exception stacktrace gets
         * hidden in server logs.
         */
        throw new MBeanException(e, e.getMessage());
    }
}