com.facebook.presto.util.Failures.java Source code

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Here is the source code for com.facebook.presto.util.Failures.java

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/*
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.facebook.presto.util;

import com.facebook.presto.client.ErrorLocation;
import com.facebook.presto.execution.ExecutionFailureInfo;
import com.facebook.presto.execution.Failure;
import com.facebook.presto.spi.ErrorCode;
import com.facebook.presto.spi.ErrorCodeSupplier;
import com.facebook.presto.spi.PrestoException;
import com.facebook.presto.sql.analyzer.SemanticException;
import com.facebook.presto.sql.parser.ParsingException;
import com.facebook.presto.sql.tree.NodeLocation;
import com.google.common.collect.Lists;

import javax.annotation.Nullable;

import java.util.Collection;
import java.util.List;

import static com.facebook.presto.spi.StandardErrorCode.INTERNAL_ERROR;
import static com.facebook.presto.spi.StandardErrorCode.SYNTAX_ERROR;
import static com.facebook.presto.util.ImmutableCollectors.toImmutableList;
import static com.google.common.base.Functions.toStringFunction;
import static java.lang.String.format;
import static java.util.Arrays.asList;

public final class Failures {
    private static final String NODE_CRASHED_ERROR = "The node may have crashed or be under too much load. "
            + "This is probably a transient issue, so please retry your query in a few minutes.";

    public static final String WORKER_NODE_ERROR = "Encountered too many errors talking to a worker node. "
            + NODE_CRASHED_ERROR;

    public static final String WORKER_RESTARTED_ERROR = "A worker node running your query has restarted. "
            + NODE_CRASHED_ERROR;

    private Failures() {
    }

    public static ExecutionFailureInfo toFailure(Throwable failure) {
        if (failure == null) {
            return null;
        }
        // todo prevent looping with suppressed cause loops and such
        String type;
        if (failure instanceof Failure) {
            type = ((Failure) failure).getType();
        } else {
            type = failure.getClass().getCanonicalName();
        }

        return new ExecutionFailureInfo(type, failure.getMessage(), toFailure(failure.getCause()),
                toFailures(asList(failure.getSuppressed())),
                Lists.transform(asList(failure.getStackTrace()), toStringFunction()), getErrorLocation(failure),
                toErrorCode(failure));
    }

    public static void checkCondition(boolean condition, ErrorCodeSupplier errorCode, String formatString,
            Object... args) {
        if (!condition) {
            throw new PrestoException(errorCode, format(formatString, args));
        }
    }

    public static List<ExecutionFailureInfo> toFailures(Collection<? extends Throwable> failures) {
        return failures.stream().map(Failures::toFailure).collect(toImmutableList());
    }

    @Nullable
    private static ErrorLocation getErrorLocation(Throwable throwable) {
        // TODO: this is a big hack
        if (throwable instanceof ParsingException) {
            ParsingException e = (ParsingException) throwable;
            return new ErrorLocation(e.getLineNumber(), e.getColumnNumber());
        } else if (throwable instanceof SemanticException) {
            SemanticException e = (SemanticException) throwable;
            if (e.getNode().getLocation().isPresent()) {
                NodeLocation nodeLocation = e.getNode().getLocation().get();
                return new ErrorLocation(nodeLocation.getLineNumber(), nodeLocation.getColumnNumber());
            }
        }
        return null;
    }

    @Nullable
    private static ErrorCode toErrorCode(@Nullable Throwable throwable) {
        if (throwable == null) {
            return null;
        }

        if (throwable instanceof PrestoException) {
            return ((PrestoException) throwable).getErrorCode();
        }
        if (throwable instanceof Failure && ((Failure) throwable).getErrorCode() != null) {
            return ((Failure) throwable).getErrorCode();
        }
        if (throwable instanceof ParsingException || throwable instanceof SemanticException) {
            return SYNTAX_ERROR.toErrorCode();
        }
        if (throwable.getCause() != null) {
            return toErrorCode(throwable.getCause());
        }
        return INTERNAL_ERROR.toErrorCode();
    }
}