Examples with TransactionManager org.apache.derby.iapi.store.access.conglomerate.TransactionManager used on opensource projects

Example 6 with TransactionManager

use of org.apache.derby.iapi.store.access.conglomerate.TransactionManager in project derby by apache.

the class T_CreateConglomRet method t_010.

/**
 * Test restoreToNull
 *
 * @exception  StandardException  Standard exception policy.
 * @exception  T_Fail  Throws T_Fail on any test failure.
 */
protected boolean t_010(TransactionController tc) throws StandardException, T_Fail {
    REPORT("Starting t_006");
    B2I testbtree = new B2I();
    // test restoreToNull()
    testbtree.restoreToNull();
    if (!(testbtree.isNull()))
        throw T_Fail.testFailMsg("bad restoreToNull/isNull");
    // test bad container open not working.
    try {
        // the following open should fail with a containerNotFound error
        // for testing purposes - assume TransactionController can be casted
        TransactionManager tm = (TransactionManager) tc;
        ConglomerateController cc = testbtree.open(tm, tm.getRawStoreXact(), false, 0, 0, (LockingPolicy) null, null, null);
        throw T_Fail.testFailMsg("bad open succeeded.");
    } catch (StandardException t) {
    // expected path comes here.
    }
    // create the base table
    DataValueDescriptor[] base_row = TemplateRow.newU8Row(2);
    T_SecondaryIndexRow index_row1 = new T_SecondaryIndexRow();
    long base_conglomid = tc.createConglomerate(// create a heap conglomerate
    "heap", // base table template row
    base_row, // column sort order - not required for heap
    null, // default collation
    null, // default properties
    null, TransactionController.IS_DEFAULT);
    // Open the base table
    ConglomerateController base_cc = tc.openConglomerate(base_conglomid, false, 0, TransactionController.MODE_RECORD, TransactionController.ISOLATION_SERIALIZABLE);
    RowLocation base_rowloc1 = base_cc.newRowLocationTemplate();
    index_row1.init(base_row, base_rowloc1, 3);
    // create the secondary index
    Properties properties = createProperties(// no current properties list
    null, // don't allow duplicates
    false, // index on all base row cols + row location
    3, // non-unique index
    2, // maintain parent links
    true, // fake base conglom for now
    -42, // row loc in last column
    2);
    TransactionManager tm = (TransactionManager) tc;
    // test bad property
    try {
        testbtree.create(tm, -1, ContainerHandle.DEFAULT_ASSIGN_ID, index_row1.getRow(), null, null, null, TransactionController.IS_TEMPORARY);
        throw T_Fail.testFailMsg("bad create succeeded.");
    } catch (StandardException t) {
    // expected path comes here.
    }
    // try bad properties
    // create the secondary index
    properties = createProperties(// no current properties list
    null, // don't allow duplicates
    false, // index on all base row cols + row location
    3, // 1 unique field leaving 1 non key field
    1, // maintain parent links
    true, // fake base conglom for now
    -42, // row loc in last column
    2);
    try {
        long index_conglomid = tc.createConglomerate(// create a btree secondary
        "BTREE", // row template
        index_row1.getRow(), // column sort order - default
        null, // default collation
        null, // properties
        properties, // not temporary
        TransactionController.IS_DEFAULT);
        throw T_Fail.testFailMsg("bad create succeeded.");
    } catch (Throwable t) {
    // expected path comes here
    }
    REPORT("Ending t_010");
    return (true);
}

Example 7 with TransactionManager

use of org.apache.derby.iapi.store.access.conglomerate.TransactionManager in project derby by apache.

the class BTreePostCommit method performWork.

/**
 * perform the work described in the postcommit work.
 * <p>
 * In this implementation the only work that can be executed by this
 * post commit processor is this class itself.
 * <p>
 *
 * @return Returns Serviceable.DONE when work has completed, or
 *         returns Serviceable.REQUEUE if work needs to be requeued.
 *
 * @param contextMgr the context manager started by the
 *         post commit daemon
 *
 * @exception  StandardException  Standard exception policy.
 */
public int performWork(ContextManager contextMgr) throws StandardException {
    // requeue if work was not completed in this try because of locks
    boolean requeue_work = false;
    TransactionManager tc = (TransactionManager) this.access_factory.getAndNameTransaction(contextMgr, AccessFactoryGlobals.SYS_TRANS_NAME);
    TransactionManager internal_xact = tc.getInternalTransaction();
    if (SanityManager.DEBUG) {
        if (SanityManager.DEBUG_ON("verbose_btree_post_commit"))
            System.out.println("starting internal xact\n");
    }
    OpenBTree open_btree = null;
    try {
        // Get lock on base table.
        // First attempt to get a table lock on the btree.  This lock is
        // requested NOWAIT to not impede normal operation on the table.
        // If the lock were to wait then the current lock manager livelock
        // algorithm would block all subsequent lock requests on this
        // btree even if they are compatible with the current holder of
        // the lock.
        // 
        // If this lock is granted then:
        // 1) deleted rows on the page can automatically be purged as
        // they must be committed, otherwise lock would not have been
        // granted.
        // 2) if all rows from page are reclaimed then a structure shrink
        // which requires table level lock can be executed.
        // 
        open_btree = openIndex(internal_xact, TransactionController.MODE_TABLE, LockingPolicy.MODE_CONTAINER);
        DataValueDescriptor[] shrink_key = purgeCommittedDeletes(open_btree, this.page_number);
        if (shrink_key != null)
            doShrink(open_btree, shrink_key);
    } catch (StandardException se) {
        if (se.isLockTimeoutOrDeadlock()) {
            try {
                open_btree = openIndex(internal_xact, TransactionController.MODE_RECORD, LockingPolicy.MODE_RECORD);
                purgeRowLevelCommittedDeletes(open_btree);
            } catch (StandardException se2) {
                if (se2.isLockTimeoutOrDeadlock()) {
                    // Could not get intended exclusive table lock, so
                    // requeue and hope other user gives up table level
                    // lock soon.  This should not be normal case.
                    requeue_work = true;
                }
            }
        }
    } finally {
        if (open_btree != null)
            open_btree.close();
        // counting on this commit to release latches associated with
        // row level purge, that have been left to prevent others from
        // getting to purged pages before the commit.  If latch is released
        // early, other transactions could insert on the page which could
        // prevent undo of the purges in case of a crash before the commit
        // gets to the disk.
        internal_xact.commit();
        internal_xact.destroy();
    }
    return (requeue_work ? Serviceable.REQUEUE : Serviceable.DONE);
}

Example 8 with TransactionManager

use of org.apache.derby.iapi.store.access.conglomerate.TransactionManager in project derby by apache.

the class BTreeController method start_xact_and_dosplit.

/**
 * Start an internal transaction and do the split.
 * <p>
 * This routine starts a new transaction, and handles any errors that
 * may come during the transaction.  This transation must not obtain any
 * locks as they are likely to conflict with the current user transaction.
 * <p>
 * If attempt_to_reclaim_deleted_rows is true this routine will
 * attempt to reclaim space on the leaf page input, by purging
 * committed deleted rows from the leaf.  If it succeeds in purging at
 * least one row, then it will commit the internal transaction and return
 * without actually performing a split.
 *
 * @param scratch_template  A scratch template used to search a page.
 * @param rowToInsert       The row to insert, make sure during split to
 *                          make room for this row.
 *
 * @exception  StandardException  Standard exception policy.
 */
private long start_xact_and_dosplit(boolean attempt_to_reclaim_deleted_rows, long leaf_pageno, DataValueDescriptor[] scratch_template, DataValueDescriptor[] rowToInsert, int flag) throws StandardException {
    TransactionManager split_xact = null;
    OpenBTree split_open_btree = null;
    ControlRow root = null;
    // Get an internal transaction to be used for the split.
    split_xact = this.init_open_user_scans.getInternalTransaction();
    if (SanityManager.DEBUG) {
        if (((getOpenMode() & ContainerHandle.MODE_FORUPDATE) != ContainerHandle.MODE_FORUPDATE)) {
            SanityManager.THROWASSERT("Container not opened with update should not cause split");
        }
    }
    boolean do_split = true;
    if (attempt_to_reclaim_deleted_rows) {
        // Get lock on base table.
        ConglomerateController base_cc = null;
        try {
            base_cc = this.getConglomerate().lockTable(split_xact, (ContainerHandle.MODE_FORUPDATE | ContainerHandle.MODE_LOCK_NOWAIT), TransactionController.MODE_RECORD, TransactionController.ISOLATION_REPEATABLE_READ);
        } catch (StandardException se) {
        // any error just don't try to reclaim deleted rows.  The
        // expected error is that we can't get the lock, which the
        // current interface throws as a containerNotFound exception.
        }
        if (base_cc != null) {
            // we got IX lock on the base table, so can try reclaim space.
            // We can only reclaim space by opening the btree in row lock
            // mode.  Table level lock row recovery is hard as we can't
            // determine if the deleted rows we encounter have been
            // deleted by our parent caller and have been committed or
            // not.  We will have to get those rows offline.
            split_open_btree = new OpenBTree();
            split_open_btree.init(this.init_open_user_scans, split_xact, // open the container.
            null, split_xact.getRawStoreXact(), false, (ContainerHandle.MODE_FORUPDATE | ContainerHandle.MODE_LOCK_NOWAIT), TransactionManager.MODE_RECORD, this.getConglomerate().getBtreeLockingPolicy(split_xact.getRawStoreXact(), TransactionController.MODE_RECORD, LockingPolicy.MODE_RECORD, TransactionController.ISOLATION_REPEATABLE_READ, (ConglomerateController) base_cc, split_open_btree), this.getConglomerate(), (LogicalUndo) null, (DynamicCompiledOpenConglomInfo) null);
            // don't split if we reclaim any rows.
            do_split = !reclaim_deleted_rows(split_open_btree, leaf_pageno);
            // on return if !do_split then the latch on leaf_pageno is held
            // and will be released by the committing or aborting the
            // transaction.  If a purge has been done, no other action on
            // the page should be attempted (ie. a split) before committing
            // the purges.
            split_open_btree.close();
        }
    }
    long new_leaf_pageno = leaf_pageno;
    if (do_split) {
        // no space was reclaimed from deleted rows, so do split to allow
        // space for a subsequent insert.
        split_open_btree = new OpenBTree();
        split_open_btree.init(this.init_open_user_scans, split_xact, // open the container.
        null, split_xact.getRawStoreXact(), false, // use same mode this controller
        getOpenMode(), // was opened with
        TransactionManager.MODE_NONE, this.getConglomerate().getBtreeLockingPolicy(split_xact.getRawStoreXact(), this.init_lock_level, LockingPolicy.MODE_RECORD, TransactionController.ISOLATION_REPEATABLE_READ, // no base row locks during split
        (ConglomerateController) null, split_open_btree), this.getConglomerate(), (LogicalUndo) null, (DynamicCompiledOpenConglomInfo) null);
        // Get the root page back, and perform a split following the
        // to-be-inserted key.  The split releases the root page latch.
        root = ControlRow.get(split_open_btree, BTree.ROOTPAGEID);
        if (SanityManager.DEBUG)
            SanityManager.ASSERT(root.page.isLatched());
        new_leaf_pageno = root.splitFor(split_open_btree, scratch_template, null, rowToInsert, flag);
        split_open_btree.close();
    }
    split_xact.commit();
    split_xact.destroy();
    return (new_leaf_pageno);
}

Example 9 with TransactionManager

use of org.apache.derby.iapi.store.access.conglomerate.TransactionManager in project derby by apache.

the class CacheLock method bootPasswordChange.

private boolean bootPasswordChange(TransactionController tc, String key, Serializable value) throws StandardException {
    // boot password in clear text
    if (key.equals(Attribute.BOOT_PASSWORD)) {
        // The user is trying to change the secret key.
        // The secret key is never stored in clear text, but we
        // store the encrypted form in the services.properties
        // file.  Swap the secret key with the encrypted form and
        // put that in the services.properties file.
        AccessFactory af = ((TransactionManager) tc).getAccessManager();
        RawStoreFactory rsf = (RawStoreFactory) findServiceModule(af, RawStoreFactory.MODULE);
        // remove secret key from properties list if possible
        serviceProperties.remove(Attribute.BOOT_PASSWORD);
        value = rsf.changeBootPassword(serviceProperties, value);
        serviceProperties.put(RawStoreFactory.ENCRYPTED_KEY, value);
        return true;
    } else {
        return false;
    }
}