Examples with Cache org.h2.util.Cache used on opensource projects

Example 31 with Cache

use of org.h2.util.Cache in project elastic-core-maven by OrdinaryDude.

the class DbShellServlet method doPost.

@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    resp.setHeader("Cache-Control", "no-cache, no-store, must-revalidate, private");
    resp.setHeader("Pragma", "no-cache");
    resp.setDateHeader("Expires", 0);
    if (!API.isAllowed(req.getRemoteHost())) {
        resp.sendError(HttpServletResponse.SC_FORBIDDEN);
        return;
    }
    String body = null;
    if (!API.disableAdminPassword) {
        if (API.adminPassword.isEmpty()) {
            body = errorNoPasswordIsConfigured;
        } else {
            try {
                API.verifyPassword(req);
                if ("true".equals(req.getParameter("showShell"))) {
                    body = form.replace("{adminPassword}", URLEncoder.encode(req.getParameter("adminPassword"), "UTF-8"));
                }
            } catch (ParameterException exc) {
                String desc = (String) ((JSONObject) JSONValue.parse(JSON.toString(exc.getErrorResponse()))).get("errorDescription");
                body = String.format(passwordFormTemplate, "<p style=\"color:red\">" + desc + "</p>");
            }
        }
    }
    if (body != null) {
        try (PrintStream out = new PrintStream(resp.getOutputStream())) {
            out.print(header);
            out.print(body);
            out.print(barter);
        }
        return;
    }
    String line = Convert.nullToEmpty(req.getParameter("line"));
    try (PrintStream out = new PrintStream(resp.getOutputStream())) {
        out.println("\n> " + line);
        try {
            Shell shell = new Shell();
            shell.setErr(out);
            shell.setOut(out);
            shell.runTool(Db.db.getConnection(), "-sql", line);
        } catch (SQLException e) {
            out.println(e.toString());
        }
    }
}

Example 32 with Cache

use of org.h2.util.Cache in project ignite by apache.

the class GridReduceQueryExecutor method stableDataNodesMap.

/**
 * @param topVer Topology version.
 * @param cctx Cache context.
 * @param parts Partitions.
 */
private Map<ClusterNode, IntArray> stableDataNodesMap(AffinityTopologyVersion topVer, final GridCacheContext<?, ?> cctx, @Nullable final int[] parts) {
    Map<ClusterNode, IntArray> mapping = new HashMap<>();
    // Explicit partitions mapping is not applicable to replicated cache.
    if (cctx.isReplicated()) {
        for (ClusterNode clusterNode : cctx.affinity().assignment(topVer).nodes()) mapping.put(clusterNode, null);
        return mapping;
    }
    List<List<ClusterNode>> assignment = cctx.affinity().assignment(topVer).assignment();
    boolean needPartsFilter = parts != null;
    GridIntIterator iter = needPartsFilter ? new GridIntList(parts).iterator() : U.forRange(0, cctx.affinity().partitions());
    while (iter.hasNext()) {
        int partId = iter.next();
        List<ClusterNode> partNodes = assignment.get(partId);
        if (!partNodes.isEmpty()) {
            ClusterNode prim = partNodes.get(0);
            if (!needPartsFilter) {
                mapping.put(prim, null);
                continue;
            }
            IntArray partIds = mapping.get(prim);
            if (partIds == null) {
                partIds = new IntArray();
                mapping.put(prim, partIds);
            }
            partIds.add(partId);
        }
    }
    return mapping;
}

Example 33 with Cache

use of org.h2.util.Cache in project ignite by apache.

the class GridReduceQueryExecutor method query.

/**
 * @param schemaName Schema name.
 * @param qry Query.
 * @param keepBinary Keep binary.
 * @param enforceJoinOrder Enforce join order of tables.
 * @param timeoutMillis Timeout in milliseconds.
 * @param cancel Query cancel.
 * @param params Query parameters.
 * @param parts Partitions.
 * @param lazy Lazy execution flag.
 * @return Rows iterator.
 */
public Iterator<List<?>> query(String schemaName, final GridCacheTwoStepQuery qry, boolean keepBinary, boolean enforceJoinOrder, int timeoutMillis, GridQueryCancel cancel, Object[] params, final int[] parts, boolean lazy) {
    if (F.isEmpty(params))
        params = EMPTY_PARAMS;
    final boolean isReplicatedOnly = qry.isReplicatedOnly();
    // Fail if all caches are replicated and explicit partitions are set.
    for (int attempt = 0; ; attempt++) {
        if (attempt != 0) {
            try {
                // Wait for exchange.
                Thread.sleep(attempt * 10);
            } catch (InterruptedException e) {
                Thread.currentThread().interrupt();
                throw new CacheException("Query was interrupted.", e);
            }
        }
        final long qryReqId = qryIdGen.incrementAndGet();
        final ReduceQueryRun r = new ReduceQueryRun(qryReqId, qry.originalSql(), schemaName, h2.connectionForSchema(schemaName), qry.mapQueries().size(), qry.pageSize(), U.currentTimeMillis(), cancel);
        AffinityTopologyVersion topVer = h2.readyTopologyVersion();
        // Check if topology is changed while retrying on locked topology.
        if (h2.serverTopologyChanged(topVer) && ctx.cache().context().lockedTopologyVersion(null) != null) {
            throw new CacheException(new TransactionException("Server topology is changed during query " + "execution inside a transaction. It's recommended to rollback and retry transaction."));
        }
        List<Integer> cacheIds = qry.cacheIds();
        Collection<ClusterNode> nodes;
        // Explicit partition mapping for unstable topology.
        Map<ClusterNode, IntArray> partsMap = null;
        // Explicit partitions mapping for query.
        Map<ClusterNode, IntArray> qryMap = null;
        // Partitions are not supported for queries over all replicated caches.
        if (parts != null) {
            boolean replicatedOnly = true;
            for (Integer cacheId : cacheIds) {
                if (!cacheContext(cacheId).isReplicated()) {
                    replicatedOnly = false;
                    break;
                }
            }
            if (replicatedOnly)
                throw new CacheException("Partitions are not supported for replicated caches");
        }
        if (qry.isLocal())
            nodes = singletonList(ctx.discovery().localNode());
        else {
            NodesForPartitionsResult nodesParts = nodesForPartitions(cacheIds, topVer, parts, isReplicatedOnly);
            nodes = nodesParts.nodes();
            partsMap = nodesParts.partitionsMap();
            qryMap = nodesParts.queryPartitionsMap();
            if (nodes == null)
                // Retry.
                continue;
            assert !nodes.isEmpty();
            if (isReplicatedOnly || qry.explain()) {
                ClusterNode locNode = ctx.discovery().localNode();
                // Always prefer local node if possible.
                if (nodes.contains(locNode))
                    nodes = singletonList(locNode);
                else {
                    // Select random data node to run query on a replicated data or
                    // get EXPLAIN PLAN from a single node.
                    nodes = singletonList(F.rand(nodes));
                }
            }
        }
        int tblIdx = 0;
        final boolean skipMergeTbl = !qry.explain() && qry.skipMergeTable();
        final int segmentsPerIndex = qry.explain() || isReplicatedOnly ? 1 : findFirstPartitioned(cacheIds).config().getQueryParallelism();
        int replicatedQrysCnt = 0;
        final Collection<ClusterNode> finalNodes = nodes;
        for (GridCacheSqlQuery mapQry : qry.mapQueries()) {
            GridMergeIndex idx;
            if (!skipMergeTbl) {
                GridMergeTable tbl;
                try {
                    tbl = createMergeTable(r.connection(), mapQry, qry.explain());
                } catch (IgniteCheckedException e) {
                    throw new IgniteException(e);
                }
                idx = tbl.getMergeIndex();
                fakeTable(r.connection(), tblIdx++).innerTable(tbl);
            } else
                idx = GridMergeIndexUnsorted.createDummy(ctx);
            // If the query has only replicated tables, we have to run it on a single node only.
            if (!mapQry.isPartitioned()) {
                ClusterNode node = F.rand(nodes);
                mapQry.node(node.id());
                replicatedQrysCnt++;
                // Replicated tables can have only 1 segment.
                idx.setSources(singletonList(node), 1);
            } else
                idx.setSources(nodes, segmentsPerIndex);
            idx.setPageSize(r.pageSize());
            r.indexes().add(idx);
        }
        r.latch(new CountDownLatch(isReplicatedOnly ? 1 : (r.indexes().size() - replicatedQrysCnt) * nodes.size() * segmentsPerIndex + replicatedQrysCnt));
        runs.put(qryReqId, r);
        boolean release = true;
        try {
            cancel.checkCancelled();
            if (ctx.clientDisconnected()) {
                throw new CacheException("Query was cancelled, client node disconnected.", new IgniteClientDisconnectedException(ctx.cluster().clientReconnectFuture(), "Client node disconnected."));
            }
            List<GridCacheSqlQuery> mapQrys = qry.mapQueries();
            if (qry.explain()) {
                mapQrys = new ArrayList<>(qry.mapQueries().size());
                for (GridCacheSqlQuery mapQry : qry.mapQueries()) mapQrys.add(new GridCacheSqlQuery("EXPLAIN " + mapQry.query()).parameterIndexes(mapQry.parameterIndexes()));
            }
            final boolean distributedJoins = qry.distributedJoins();
            cancel.set(new Runnable() {

                @Override
                public void run() {
                    send(finalNodes, new GridQueryCancelRequest(qryReqId), null, false);
                }
            });
            boolean retry = false;
            // Always enforce join order on map side to have consistent behavior.
            int flags = GridH2QueryRequest.FLAG_ENFORCE_JOIN_ORDER;
            if (distributedJoins)
                flags |= GridH2QueryRequest.FLAG_DISTRIBUTED_JOINS;
            if (qry.isLocal())
                flags |= GridH2QueryRequest.FLAG_IS_LOCAL;
            if (qry.explain())
                flags |= GridH2QueryRequest.FLAG_EXPLAIN;
            if (isReplicatedOnly)
                flags |= GridH2QueryRequest.FLAG_REPLICATED;
            if (lazy && mapQrys.size() == 1)
                flags |= GridH2QueryRequest.FLAG_LAZY;
            GridH2QueryRequest req = new GridH2QueryRequest().requestId(qryReqId).topologyVersion(topVer).pageSize(r.pageSize()).caches(qry.cacheIds()).tables(distributedJoins ? qry.tables() : null).partitions(convert(partsMap)).queries(mapQrys).parameters(params).flags(flags).timeout(timeoutMillis).schemaName(schemaName);
            if (send(nodes, req, parts == null ? null : new ExplicitPartitionsSpecializer(qryMap), false)) {
                awaitAllReplies(r, nodes, cancel);
                Object state = r.state();
                if (state != null) {
                    if (state instanceof CacheException) {
                        CacheException err = (CacheException) state;
                        if (err.getCause() instanceof IgniteClientDisconnectedException)
                            throw err;
                        if (wasCancelled(err))
                            // Throw correct exception.
                            throw new QueryCancelledException();
                        throw new CacheException("Failed to run map query remotely." + err.getMessage(), err);
                    }
                    if (state instanceof AffinityTopologyVersion) {
                        retry = true;
                        // If remote node asks us to retry then we have outdated full partition map.
                        h2.awaitForReadyTopologyVersion((AffinityTopologyVersion) state);
                    }
                }
            } else
                // Send failed.
                retry = true;
            Iterator<List<?>> resIter = null;
            if (!retry) {
                if (skipMergeTbl) {
                    resIter = new GridMergeIndexIterator(this, finalNodes, r, qryReqId, qry.distributedJoins());
                    release = false;
                } else {
                    cancel.checkCancelled();
                    UUID locNodeId = ctx.localNodeId();
                    H2Utils.setupConnection(r.connection(), false, enforceJoinOrder);
                    GridH2QueryContext.set(new GridH2QueryContext(locNodeId, locNodeId, qryReqId, REDUCE).pageSize(r.pageSize()).distributedJoinMode(OFF));
                    try {
                        if (qry.explain())
                            return explainPlan(r.connection(), qry, params);
                        GridCacheSqlQuery rdc = qry.reduceQuery();
                        ResultSet res = h2.executeSqlQueryWithTimer(r.connection(), rdc.query(), F.asList(rdc.parameters(params)), // The statement will cache some extra thread local objects.
                        false, timeoutMillis, cancel);
                        resIter = new H2FieldsIterator(res);
                    } finally {
                        GridH2QueryContext.clearThreadLocal();
                    }
                }
            }
            if (retry) {
                if (Thread.currentThread().isInterrupted())
                    throw new IgniteInterruptedCheckedException("Query was interrupted.");
                continue;
            }
            return new GridQueryCacheObjectsIterator(resIter, h2.objectContext(), keepBinary);
        } catch (IgniteCheckedException | RuntimeException e) {
            release = true;
            U.closeQuiet(r.connection());
            if (e instanceof CacheException) {
                if (wasCancelled((CacheException) e))
                    throw new CacheException("Failed to run reduce query locally.", new QueryCancelledException());
                throw (CacheException) e;
            }
            Throwable cause = e;
            if (e instanceof IgniteCheckedException) {
                Throwable disconnectedErr = ((IgniteCheckedException) e).getCause(IgniteClientDisconnectedException.class);
                if (disconnectedErr != null)
                    cause = disconnectedErr;
            }
            throw new CacheException("Failed to run reduce query locally.", cause);
        } finally {
            if (release) {
                releaseRemoteResources(finalNodes, r, qryReqId, qry.distributedJoins());
                if (!skipMergeTbl) {
                    for (int i = 0, mapQrys = qry.mapQueries().size(); i < mapQrys; i++) // Drop all merge tables.
                    fakeTable(null, i).innerTable(null);
                }
            }
        }
    }
}

Example 34 with Cache

use of org.h2.util.Cache in project ignite by apache.

the class IgniteH2Indexing method stop.

/**
 * {@inheritDoc}
 */
@Override
public void stop() throws IgniteCheckedException {
    if (log.isDebugEnabled())
        log.debug("Stopping cache query index...");
    mapQryExec.cancelLazyWorkers();
    for (Connection c : conns.values()) U.close(c, log);
    conns.clear();
    schemas.clear();
    cacheName2schema.clear();
    try (Connection c = DriverManager.getConnection(dbUrl);
        Statement s = c.createStatement()) {
        s.execute("SHUTDOWN");
    } catch (SQLException e) {
        U.error(log, "Failed to shutdown database.", e);
    }
    if (stmtCacheCleanupTask != null)
        stmtCacheCleanupTask.close();
    if (connCleanupTask != null)
        connCleanupTask.close();
    GridH2QueryContext.clearLocalNodeStop(nodeId);
    if (log.isDebugEnabled())
        log.debug("Cache query index stopped.");
}

Example 35 with Cache

use of org.h2.util.Cache in project ignite by apache.

the class IgniteH2Indexing method start.

/**
 * {@inheritDoc}
 */
@SuppressWarnings({ "NonThreadSafeLazyInitialization", "deprecation" })
@Override
public void start(GridKernalContext ctx, GridSpinBusyLock busyLock) throws IgniteCheckedException {
    if (log.isDebugEnabled())
        log.debug("Starting cache query index...");
    this.busyLock = busyLock;
    qryIdGen = new AtomicLong();
    if (SysProperties.serializeJavaObject) {
        U.warn(log, "Serialization of Java objects in H2 was enabled.");
        SysProperties.serializeJavaObject = false;
    }
    String dbName = (ctx != null ? ctx.localNodeId() : UUID.randomUUID()).toString();
    dbUrl = "jdbc:h2:mem:" + dbName + DB_OPTIONS;
    org.h2.Driver.load();
    try {
        if (getString(IGNITE_H2_DEBUG_CONSOLE) != null) {
            Connection c = DriverManager.getConnection(dbUrl);
            int port = getInteger(IGNITE_H2_DEBUG_CONSOLE_PORT, 0);
            WebServer webSrv = new WebServer();
            Server web = new Server(webSrv, "-webPort", Integer.toString(port));
            web.start();
            String url = webSrv.addSession(c);
            U.quietAndInfo(log, "H2 debug console URL: " + url);
            try {
                Server.openBrowser(url);
            } catch (Exception e) {
                U.warn(log, "Failed to open browser: " + e.getMessage());
            }
        }
    } catch (SQLException e) {
        throw new IgniteCheckedException(e);
    }
    if (ctx == null) {
        // This is allowed in some tests.
        nodeId = UUID.randomUUID();
        marshaller = new JdkMarshaller();
    } else {
        this.ctx = ctx;
        schemas.put(QueryUtils.DFLT_SCHEMA, new H2Schema(QueryUtils.DFLT_SCHEMA));
        valCtx = new CacheQueryObjectValueContext(ctx);
        nodeId = ctx.localNodeId();
        marshaller = ctx.config().getMarshaller();
        mapQryExec = new GridMapQueryExecutor(busyLock);
        rdcQryExec = new GridReduceQueryExecutor(qryIdGen, busyLock);
        mapQryExec.start(ctx, this);
        rdcQryExec.start(ctx, this);
        stmtCacheCleanupTask = ctx.timeout().schedule(new Runnable() {

            @Override
            public void run() {
                cleanupStatementCache();
            }
        }, CLEANUP_STMT_CACHE_PERIOD, CLEANUP_STMT_CACHE_PERIOD);
        dmlProc = new DmlStatementsProcessor();
        ddlProc = new DdlStatementsProcessor();
        dmlProc.start(ctx, this);
        ddlProc.start(ctx, this);
    }
    if (JdbcUtils.serializer != null)
        U.warn(log, "Custom H2 serialization is already configured, will override.");
    JdbcUtils.serializer = h2Serializer();
    connCleanupTask = ctx.timeout().schedule(new Runnable() {

        @Override
        public void run() {
            cleanupConnections();
        }
    }, CLEANUP_CONNECTIONS_PERIOD, CLEANUP_CONNECTIONS_PERIOD);
}