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/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch licenses this file to you 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 org.elasticsearch.indices.recovery;

import org.elasticsearch.Version;
import org.elasticsearch.cluster.node.DiscoveryNode;
import org.elasticsearch.cluster.routing.RecoverySource;
import org.elasticsearch.cluster.routing.ShardRouting;
import org.elasticsearch.common.Nullable;
import org.elasticsearch.common.Strings;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.io.stream.Writeable;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.ToXContentFragment;
import org.elasticsearch.common.xcontent.ToXContentObject;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.index.shard.IndexShard;
import org.elasticsearch.index.shard.ShardId;

import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;

/**
 * Keeps track of state related to shard recovery.
 */
public class RecoveryState implements ToXContentFragment, Writeable {

    public enum Stage {
        INIT((byte) 0),

        /**
         * recovery of lucene files, either reusing local ones are copying new ones
         */
        INDEX((byte) 1),

        /**
         * potentially running check index
         */
        VERIFY_INDEX((byte) 2),

        /**
         * starting up the engine, replaying the translog
         */
        TRANSLOG((byte) 3),

        /**
         * performing final task after all translog ops have been done
         */
        FINALIZE((byte) 4),

        DONE((byte) 5);

        private static final Stage[] STAGES = new Stage[Stage.values().length];

        static {
            for (Stage stage : Stage.values()) {
                assert stage.id() < STAGES.length && stage.id() >= 0;
                STAGES[stage.id] = stage;
            }
        }

        private final byte id;

        Stage(byte id) {
            this.id = id;
        }

        public byte id() {
            return id;
        }

        public static Stage fromId(byte id) {
            if (id < 0 || id >= STAGES.length) {
                throw new IllegalArgumentException("No mapping for id [" + id + "]");
            }
            return STAGES[id];
        }
    }

    private Stage stage;

    private final Index index;
    private final Translog translog;
    private final VerifyIndex verifyIndex;
    private final Timer timer;

    private RecoverySource recoverySource;
    private ShardId shardId;
    @Nullable
    private DiscoveryNode sourceNode;
    private DiscoveryNode targetNode;
    private boolean primary;

    public RecoveryState(ShardRouting shardRouting, DiscoveryNode targetNode, @Nullable DiscoveryNode sourceNode) {
        assert shardRouting.initializing() : "only allow initializing shard routing to be recovered: " + shardRouting;
        RecoverySource recoverySource = shardRouting.recoverySource();
        assert (recoverySource.getType() == RecoverySource.Type.PEER) == (sourceNode != null) :
            "peer recovery requires source node, recovery type: " + recoverySource.getType() + " source node: " + sourceNode;
        this.shardId = shardRouting.shardId();
        this.primary = shardRouting.primary();
        this.recoverySource = recoverySource;
        this.sourceNode = sourceNode;
        this.targetNode = targetNode;
        stage = Stage.INIT;
        index = new Index();
        translog = new Translog();
        verifyIndex = new VerifyIndex();
        timer = new Timer();
        timer.start();
    }

    public RecoveryState(StreamInput in) throws IOException {
        timer = new Timer(in);
        stage = Stage.fromId(in.readByte());
        shardId = new ShardId(in);
        recoverySource = RecoverySource.readFrom(in);
        targetNode = new DiscoveryNode(in);
        sourceNode = in.readOptionalWriteable(DiscoveryNode::new);
        index = new Index(in);
        translog = new Translog(in);
        verifyIndex = new VerifyIndex(in);
        primary = in.readBoolean();
    }

    @Override
    public void writeTo(StreamOutput out) throws IOException {
        timer.writeTo(out);
        out.writeByte(stage.id());
        shardId.writeTo(out);
        recoverySource.writeTo(out);
        targetNode.writeTo(out);
        out.writeOptionalWriteable(sourceNode);
        index.writeTo(out);
        translog.writeTo(out);
        verifyIndex.writeTo(out);
        out.writeBoolean(primary);
    }

    public ShardId getShardId() {
        return shardId;
    }

    public synchronized Stage getStage() {
        return this.stage;
    }


    private void validateAndSetStage(Stage expected, Stage next) {
        if (stage != expected) {
            throw new IllegalStateException("can't move recovery to stage [" + next + "]. current stage: ["
                    + stage + "] (expected [" + expected + "])");
        }
        stage = next;
    }

    // synchronized is strictly speaking not needed (this is called by a single thread), but just to be safe
    public synchronized RecoveryState setStage(Stage stage) {
        switch (stage) {
            case INIT:
                // reinitializing stop remove all state except for start time
                this.stage = Stage.INIT;
                getIndex().reset();
                getVerifyIndex().reset();
                getTranslog().reset();
                break;
            case INDEX:
                validateAndSetStage(Stage.INIT, stage);
                getIndex().start();
                break;
            case VERIFY_INDEX:
                validateAndSetStage(Stage.INDEX, stage);
                getIndex().stop();
                getVerifyIndex().start();
                break;
            case TRANSLOG:
                validateAndSetStage(Stage.VERIFY_INDEX, stage);
                getVerifyIndex().stop();
                getTranslog().start();
                break;
            case FINALIZE:
                validateAndSetStage(Stage.TRANSLOG, stage);
                getTranslog().stop();
                break;
            case DONE:
                validateAndSetStage(Stage.FINALIZE, stage);
                getTimer().stop();
                break;
            default:
                throw new IllegalArgumentException("unknown RecoveryState.Stage [" + stage + "]");
        }
        return this;
    }

    public Index getIndex() {
        return index;
    }

    public VerifyIndex getVerifyIndex() {
        return this.verifyIndex;
    }

    public Translog getTranslog() {
        return translog;
    }

    public Timer getTimer() {
        return timer;
    }

    public RecoverySource getRecoverySource() {
        return recoverySource;
    }

    /**
     * Returns recovery source node (only non-null if peer recovery)
     */
    @Nullable
    public DiscoveryNode getSourceNode() {
        return sourceNode;
    }

    public DiscoveryNode getTargetNode() {
        return targetNode;
    }

    public boolean getPrimary() {
        return primary;
    }

    public static RecoveryState readRecoveryState(StreamInput in) throws IOException {
        return new RecoveryState(in);
    }

    @Override
    public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {

        builder.field(Fields.ID, shardId.id());
        builder.field(Fields.TYPE, recoverySource.getType());
        builder.field(Fields.STAGE, stage.toString());
        builder.field(Fields.PRIMARY, primary);
        builder.timeField(Fields.START_TIME_IN_MILLIS, Fields.START_TIME, timer.startTime);
        if (timer.stopTime > 0) {
            builder.timeField(Fields.STOP_TIME_IN_MILLIS, Fields.STOP_TIME, timer.stopTime);
        }
        builder.humanReadableField(Fields.TOTAL_TIME_IN_MILLIS, Fields.TOTAL_TIME, new TimeValue(timer.time()));

        if (recoverySource.getType() == RecoverySource.Type.PEER) {
            builder.startObject(Fields.SOURCE);
            builder.field(Fields.ID, sourceNode.getId());
            builder.field(Fields.HOST, sourceNode.getHostName());
            builder.field(Fields.TRANSPORT_ADDRESS, sourceNode.getAddress().toString());
            builder.field(Fields.IP, sourceNode.getHostAddress());
            builder.field(Fields.NAME, sourceNode.getName());
            builder.endObject();
        } else {
            builder.startObject(Fields.SOURCE);
            recoverySource.addAdditionalFields(builder, params);
            builder.endObject();
        }

        builder.startObject(Fields.TARGET);
        builder.field(Fields.ID, targetNode.getId());
        builder.field(Fields.HOST, targetNode.getHostName());
        builder.field(Fields.TRANSPORT_ADDRESS, targetNode.getAddress().toString());
        builder.field(Fields.IP, targetNode.getHostAddress());
        builder.field(Fields.NAME, targetNode.getName());
        builder.endObject();

        builder.startObject(Fields.INDEX);
        index.toXContent(builder, params);
        builder.endObject();

        builder.startObject(Fields.TRANSLOG);
        translog.toXContent(builder, params);
        builder.endObject();

        builder.startObject(Fields.VERIFY_INDEX);
        verifyIndex.toXContent(builder, params);
        builder.endObject();

        return builder;
    }

    static final class Fields {
        static final String ID = "id";
        static final String TYPE = "type";
        static final String STAGE = "stage";
        static final String PRIMARY = "primary";
        static final String START_TIME = "start_time";
        static final String START_TIME_IN_MILLIS = "start_time_in_millis";
        static final String STOP_TIME = "stop_time";
        static final String STOP_TIME_IN_MILLIS = "stop_time_in_millis";
        static final String TOTAL_TIME = "total_time";
        static final String TOTAL_TIME_IN_MILLIS = "total_time_in_millis";
        static final String SOURCE = "source";
        static final String HOST = "host";
        static final String TRANSPORT_ADDRESS = "transport_address";
        static final String IP = "ip";
        static final String NAME = "name";
        static final String TARGET = "target";
        static final String INDEX = "index";
        static final String TRANSLOG = "translog";
        static final String TOTAL_ON_START = "total_on_start";
        static final String VERIFY_INDEX = "verify_index";
        static final String RECOVERED = "recovered";
        static final String RECOVERED_IN_BYTES = "recovered_in_bytes";
        static final String CHECK_INDEX_TIME = "check_index_time";
        static final String CHECK_INDEX_TIME_IN_MILLIS = "check_index_time_in_millis";
        static final String LENGTH = "length";
        static final String LENGTH_IN_BYTES = "length_in_bytes";
        static final String FILES = "files";
        static final String TOTAL = "total";
        static final String TOTAL_IN_BYTES = "total_in_bytes";
        static final String REUSED = "reused";
        static final String REUSED_IN_BYTES = "reused_in_bytes";
        static final String PERCENT = "percent";
        static final String DETAILS = "details";
        static final String SIZE = "size";
        static final String SOURCE_THROTTLE_TIME = "source_throttle_time";
        static final String SOURCE_THROTTLE_TIME_IN_MILLIS = "source_throttle_time_in_millis";
        static final String TARGET_THROTTLE_TIME = "target_throttle_time";
        static final String TARGET_THROTTLE_TIME_IN_MILLIS = "target_throttle_time_in_millis";
    }

    public static class Timer implements Writeable {
        protected long startTime = 0;
        protected long startNanoTime = 0;
        protected long time = -1;
        protected long stopTime = 0;

        public Timer() {
        }

        public Timer(StreamInput in) throws IOException {
            startTime = in.readVLong();
            startNanoTime = in.readVLong();
            stopTime = in.readVLong();
            time = in.readVLong();
        }

        @Override
        public synchronized void writeTo(StreamOutput out) throws IOException {
            out.writeVLong(startTime);
            out.writeVLong(startNanoTime);
            out.writeVLong(stopTime);
            // write a snapshot of current time, which is not per se the time field
            out.writeVLong(time());
        }

        public synchronized void start() {
            assert startTime == 0 : "already started";
            startTime = System.currentTimeMillis();
            startNanoTime = System.nanoTime();
        }

        /** Returns start time in millis */
        public synchronized long startTime() {
            return startTime;
        }

        /** Returns elapsed time in millis, or 0 if timer was not started */
        public synchronized long time() {
            if (startNanoTime == 0) {
                return 0;
            }
            if (time >= 0) {
                return time;
            }
            return Math.max(0, TimeValue.nsecToMSec(System.nanoTime() - startNanoTime));
        }

        /** Returns stop time in millis */
        public synchronized long stopTime() {
            return stopTime;
        }

        public synchronized void stop() {
            assert stopTime == 0 : "already stopped";
            stopTime = Math.max(System.currentTimeMillis(), startTime);
            time = TimeValue.nsecToMSec(System.nanoTime() - startNanoTime);
            assert time >= 0;
        }

        public synchronized void reset() {
            startTime = 0;
            startNanoTime = 0;
            time = -1;
            stopTime = 0;
        }

        // for tests
        public long getStartNanoTime() {
            return startNanoTime;
        }
    }

    public static class VerifyIndex extends Timer implements ToXContentFragment, Writeable {
        private volatile long checkIndexTime;

        public VerifyIndex() {
        }

        public VerifyIndex(StreamInput in) throws IOException {
            super(in);
            checkIndexTime = in.readVLong();
        }

        @Override
        public void writeTo(StreamOutput out) throws IOException {
            super.writeTo(out);
            out.writeVLong(checkIndexTime);
        }

        public void reset() {
            super.reset();
            checkIndexTime = 0;
        }

        public long checkIndexTime() {
            return checkIndexTime;
        }

        public void checkIndexTime(long checkIndexTime) {
            this.checkIndexTime = checkIndexTime;
        }

        @Override
        public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException {
            builder.humanReadableField(Fields.CHECK_INDEX_TIME_IN_MILLIS, Fields.CHECK_INDEX_TIME, new TimeValue(checkIndexTime));
            builder.humanReadableField(Fields.TOTAL_TIME_IN_MILLIS, Fields.TOTAL_TIME, new TimeValue(time()));
            return builder;
        }
    }

    public static class Translog extends Timer implements ToXContentFragment, Writeable {
        public static final int UNKNOWN = -1;

        private int recovered;
        private int total = UNKNOWN;
        private int totalOnStart = UNKNOWN;
        private int totalLocal = UNKNOWN;

        public Translog() {
        }

        public Translog(StreamInput in) throws IOException {
            super(in);
            recovered = in.readVInt();
            total = in.readVInt();
            totalOnStart = in.readVInt();
            if (in.getVersion().onOrAfter(Version.V_7_4_0)) {
                totalLocal = in.readVInt();
            }
        }

        @Override
        public void writeTo(StreamOutput out) throws IOException {
            super.writeTo(out);
            out.writeVInt(recovered);
            out.writeVInt(total);
            out.writeVInt(totalOnStart);
            if (out.getVersion().onOrAfter(Version.V_7_4_0)) {
                out.writeVInt(totalLocal);
            }
        }

        public synchronized void reset() {
            super.reset();
            recovered = 0;
            total = UNKNOWN;
            totalOnStart = UNKNOWN;
            totalLocal = UNKNOWN;
        }

        public synchronized void incrementRecoveredOperations() {
            recovered++;
            assert total == UNKNOWN || total >= recovered : "total, if known, should be > recovered. total [" + total +
                "], recovered [" + recovered + "]";
        }

        public synchronized void incrementRecoveredOperations(int ops) {
            recovered += ops;
            assert total == UNKNOWN || total >= recovered : "total, if known, should be > recovered. total [" + total +
                "], recovered [" + recovered + "]";
        }

        public synchronized void decrementRecoveredOperations(int ops) {
            recovered -= ops;
            assert recovered >= 0 : "recovered operations must be non-negative. Because [" + recovered +
                "] after decrementing [" + ops + "]";
            assert total == UNKNOWN || total >= recovered : "total, if known, should be > recovered. total [" +
                total + "], recovered [" + recovered + "]";
        }


        /**
         * returns the total number of translog operations recovered so far
         */
        public synchronized int recoveredOperations() {
            return recovered;
        }

        /**
         * returns the total number of translog operations needed to be recovered at this moment.
         * Note that this can change as the number of operations grows during recovery.
         * 

* A value of -1 ({@link RecoveryState.Translog#UNKNOWN} is return if this is unknown (typically a gateway recovery) */ public synchronized int totalOperations() { return total; } public synchronized void totalOperations(int total) { this.total = totalLocal == UNKNOWN ? total : totalLocal + total; assert total == UNKNOWN || this.total >= recovered : "total, if known, should be > recovered. total [" + total + "], recovered [" + recovered + "]"; } /** * returns the total number of translog operations to recovered, on the start of the recovery. Unlike {@link #totalOperations} * this does change during recovery. *

* A value of -1 ({@link RecoveryState.Translog#UNKNOWN} is return if this is unknown (typically a gateway recovery) */ public synchronized int totalOperationsOnStart() { return this.totalOnStart; } public synchronized void totalOperationsOnStart(int total) { this.totalOnStart = totalLocal == UNKNOWN ? total : totalLocal + total; } /** * Sets the total number of translog operations to be recovered locally before performing peer recovery * @see IndexShard#recoverLocallyUpToGlobalCheckpoint() */ public synchronized void totalLocal(int totalLocal) { assert totalLocal >= recovered : totalLocal + " < " + recovered; this.totalLocal = totalLocal; } public synchronized int totalLocal() { return totalLocal; } public synchronized float recoveredPercent() { if (total == UNKNOWN) { return -1.f; } if (total == 0) { return 100.f; } return recovered * 100.0f / total; } @Override public synchronized XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException { builder.field(Fields.RECOVERED, recovered); builder.field(Fields.TOTAL, total); builder.field(Fields.PERCENT, String.format(Locale.ROOT, "%1.1f%%", recoveredPercent())); builder.field(Fields.TOTAL_ON_START, totalOnStart); builder.humanReadableField(Fields.TOTAL_TIME_IN_MILLIS, Fields.TOTAL_TIME, new TimeValue(time())); return builder; } } public static class File implements ToXContentObject, Writeable { private String name; private long length; private long recovered; private boolean reused; public File(String name, long length, boolean reused) { assert name != null; this.name = name; this.length = length; this.reused = reused; } public File(StreamInput in) throws IOException { name = in.readString(); length = in.readVLong(); recovered = in.readVLong(); reused = in.readBoolean(); } @Override public void writeTo(StreamOutput out) throws IOException { out.writeString(name); out.writeVLong(length); out.writeVLong(recovered); out.writeBoolean(reused); } void addRecoveredBytes(long bytes) { assert reused == false : "file is marked as reused, can't update recovered bytes"; assert bytes >= 0 : "can't recovered negative bytes. got [" + bytes + "]"; recovered += bytes; } /** * file name * */ public String name() { return name; } /** * file length * */ public long length() { return length; } /** * number of bytes recovered for this file (so far). 0 if the file is reused * */ public long recovered() { return recovered; } /** * returns true if the file is reused from a local copy */ public boolean reused() { return reused; } boolean fullyRecovered() { return reused == false && length == recovered; } @Override public XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException { builder.startObject(); builder.field(Fields.NAME, name); builder.humanReadableField(Fields.LENGTH_IN_BYTES, Fields.LENGTH, new ByteSizeValue(length)); builder.field(Fields.REUSED, reused); builder.humanReadableField(Fields.RECOVERED_IN_BYTES, Fields.RECOVERED, new ByteSizeValue(recovered)); builder.endObject(); return builder; } @Override public boolean equals(Object obj) { if (obj instanceof File) { File other = (File) obj; return name.equals(other.name) && length == other.length() && reused == other.reused() && recovered == other.recovered(); } return false; } @Override public int hashCode() { int result = name.hashCode(); result = 31 * result + Long.hashCode(length); result = 31 * result + Long.hashCode(recovered); result = 31 * result + (reused ? 1 : 0); return result; } @Override public String toString() { return "file (name [" + name + "], reused [" + reused + "], length [" + length + "], recovered [" + recovered + "])"; } } public static class Index extends Timer implements ToXContentFragment, Writeable { private final Map fileDetails = new HashMap<>(); public static final long UNKNOWN = -1L; private long sourceThrottlingInNanos = UNKNOWN; private long targetThrottleTimeInNanos = UNKNOWN; public Index() { } public Index(StreamInput in) throws IOException { super(in); int size = in.readVInt(); for (int i = 0; i < size; i++) { File file = new File(in); fileDetails.put(file.name, file); } sourceThrottlingInNanos = in.readLong(); targetThrottleTimeInNanos = in.readLong(); } @Override public synchronized void writeTo(StreamOutput out) throws IOException { super.writeTo(out); final File[] files = fileDetails.values().toArray(new File[0]); out.writeVInt(files.length); for (File file : files) { file.writeTo(out); } out.writeLong(sourceThrottlingInNanos); out.writeLong(targetThrottleTimeInNanos); } public synchronized List fileDetails() { return Collections.unmodifiableList(new ArrayList<>(fileDetails.values())); } public synchronized void reset() { super.reset(); fileDetails.clear(); sourceThrottlingInNanos = UNKNOWN; targetThrottleTimeInNanos = UNKNOWN; } public synchronized void addFileDetail(String name, long length, boolean reused) { File file = new File(name, length, reused); File existing = fileDetails.put(name, file); assert existing == null : "file [" + name + "] is already reported"; } public synchronized void addRecoveredBytesToFile(String name, long bytes) { File file = fileDetails.get(name); file.addRecoveredBytes(bytes); } public synchronized void addSourceThrottling(long timeInNanos) { if (sourceThrottlingInNanos == UNKNOWN) { sourceThrottlingInNanos = timeInNanos; } else { sourceThrottlingInNanos += timeInNanos; } } public synchronized void addTargetThrottling(long timeInNanos) { if (targetThrottleTimeInNanos == UNKNOWN) { targetThrottleTimeInNanos = timeInNanos; } else { targetThrottleTimeInNanos += timeInNanos; } } public synchronized TimeValue sourceThrottling() { return TimeValue.timeValueNanos(sourceThrottlingInNanos); } public synchronized TimeValue targetThrottling() { return TimeValue.timeValueNanos(targetThrottleTimeInNanos); } /** * total number of files that are part of this recovery, both re-used and recovered */ public synchronized int totalFileCount() { return fileDetails.size(); } /** * total number of files to be recovered (potentially not yet done) */ public synchronized int totalRecoverFiles() { int total = 0; for (File file : fileDetails.values()) { if (file.reused() == false) { total++; } } return total; } /** * number of file that were recovered (excluding on ongoing files) */ public synchronized int recoveredFileCount() { int count = 0; for (File file : fileDetails.values()) { if (file.fullyRecovered()) { count++; } } return count; } /** * percent of recovered (i.e., not reused) files out of the total files to be recovered */ public synchronized float recoveredFilesPercent() { int total = 0; int recovered = 0; for (File file : fileDetails.values()) { if (file.reused() == false) { total++; if (file.fullyRecovered()) { recovered++; } } } if (total == 0 && fileDetails.size() == 0) { // indicates we are still in init phase return 0.0f; } if (total == recovered) { return 100.0f; } else { float result = 100.0f * (recovered / (float) total); return result; } } /** * total number of bytes in th shard */ public synchronized long totalBytes() { long total = 0; for (File file : fileDetails.values()) { total += file.length(); } return total; } /** * total number of bytes recovered so far, including both existing and reused */ public synchronized long recoveredBytes() { long recovered = 0; for (File file : fileDetails.values()) { recovered += file.recovered(); } return recovered; } /** * total bytes of files to be recovered (potentially not yet done) */ public synchronized long totalRecoverBytes() { long total = 0; for (File file : fileDetails.values()) { if (file.reused() == false) { total += file.length(); } } return total; } /** * percent of bytes recovered out of total files bytes *to be* recovered */ public synchronized float recoveredBytesPercent() { long total = 0; long recovered = 0; for (File file : fileDetails.values()) { if (file.reused() == false) { total += file.length(); recovered += file.recovered(); } } if (total == 0 && fileDetails.size() == 0) { // indicates we are still in init phase return 0.0f; } if (total == recovered) { return 100.0f; } else { return 100.0f * recovered / total; } } public synchronized int reusedFileCount() { int reused = 0; for (File file : fileDetails.values()) { if (file.reused()) { reused++; } } return reused; } public synchronized long reusedBytes() { long reused = 0; for (File file : fileDetails.values()) { if (file.reused()) { reused += file.length(); } } return reused; } @Override public synchronized XContentBuilder toXContent(XContentBuilder builder, Params params) throws IOException { // stream size first, as it matters more and the files section can be long builder.startObject(Fields.SIZE); builder.humanReadableField(Fields.TOTAL_IN_BYTES, Fields.TOTAL, new ByteSizeValue(totalBytes())); builder.humanReadableField(Fields.REUSED_IN_BYTES, Fields.REUSED, new ByteSizeValue(reusedBytes())); builder.humanReadableField(Fields.RECOVERED_IN_BYTES, Fields.RECOVERED, new ByteSizeValue(recoveredBytes())); builder.field(Fields.PERCENT, String.format(Locale.ROOT, "%1.1f%%", recoveredBytesPercent())); builder.endObject(); builder.startObject(Fields.FILES); builder.field(Fields.TOTAL, totalFileCount()); builder.field(Fields.REUSED, reusedFileCount()); builder.field(Fields.RECOVERED, recoveredFileCount()); builder.field(Fields.PERCENT, String.format(Locale.ROOT, "%1.1f%%", recoveredFilesPercent())); if (params.paramAsBoolean("detailed", false)) { builder.startArray(Fields.DETAILS); for (File file : fileDetails.values()) { file.toXContent(builder, params); } builder.endArray(); } builder.endObject(); builder.humanReadableField(Fields.TOTAL_TIME_IN_MILLIS, Fields.TOTAL_TIME, new TimeValue(time())); builder.humanReadableField(Fields.SOURCE_THROTTLE_TIME_IN_MILLIS, Fields.SOURCE_THROTTLE_TIME, sourceThrottling()); builder.humanReadableField(Fields.TARGET_THROTTLE_TIME_IN_MILLIS, Fields.TARGET_THROTTLE_TIME, targetThrottling()); return builder; } @Override public synchronized String toString() { try { XContentBuilder builder = XContentFactory.jsonBuilder().prettyPrint(); builder.startObject(); toXContent(builder, EMPTY_PARAMS); builder.endObject(); return Strings.toString(builder); } catch (IOException e) { return "{ \"error\" : \"" + e.getMessage() + "\"}"; } } public synchronized File getFileDetails(String dest) { return fileDetails.get(dest); } } }





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