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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.persistence.dummy;
import com.yahoo.collections.Pair;
import com.yahoo.document.BucketId;
import com.yahoo.document.BucketIdFactory;
import com.yahoo.document.Document;
import com.yahoo.document.DocumentId;
import com.yahoo.persistence.spi.BucketInfo;
import com.yahoo.persistence.spi.DocEntry;
import com.yahoo.persistence.spi.result.GetResult;
import java.util.ArrayList;
import java.util.List;
/**
* Class used by DummyPersistence to store its contents.
*/
public class BucketContents {
List<DocEntry> entries = new ArrayList<DocEntry>();
BucketInfo.ActiveState active;
public void setActiveState(BucketInfo.ActiveState state) {
active = state;
}
public boolean isActive() {
return active == BucketInfo.ActiveState.ACTIVE;
}
public BucketInfo getBucketInfo() {
int count = 0;
int meta = 0;
int checksum = 0;
for (DocEntry e : entries) {
if (e.getType() == DocEntry.Type.PUT_ENTRY) {
++count;
checksum ^= e.getTimestamp();
}
++meta;
}
return new BucketInfo(checksum,
count,
meta,
meta,
meta,
BucketInfo.ReadyState.READY,
active);
}
public void put(long timestamp, Document doc) {
for (DocEntry e : entries) {
if (e.getDocumentId().equals(doc.getId())) {
if (e.getTimestamp() > timestamp) {
return;
}
entries.remove(e);
break;
}
}
entries.add(new DocEntry(timestamp, doc));
}
public boolean remove(long timestamp, DocumentId docId) {
DocEntry found = null;
for (DocEntry e : entries) {
if (
e.getType() == DocEntry.Type.PUT_ENTRY &&
e.getDocumentId().equals(docId) &&
e.getTimestamp() <= timestamp)
{
found = e;
entries.remove(e);
break;
}
}
entries.add(new DocEntry(timestamp, docId));
return found != null;
}
public GetResult get(DocumentId id) {
for (DocEntry e : entries) {
if (e.getType() == DocEntry.Type.PUT_ENTRY && e.getDocumentId().equals(id)) {
return new GetResult(e.getDocument(), e.getTimestamp());
}
}
return new GetResult();
}
public Pair<BucketContents, BucketContents> split(BucketId target1, BucketId target2) {
BucketContents a = new BucketContents();
BucketContents b = new BucketContents();
for (DocEntry e : entries) {
BucketId bucketId = new BucketIdFactory().getBucketId(e.getDocumentId());
if (target1.contains(bucketId)) {
a.entries.add(e);
} else {
b.entries.add(e);
}
}
return new Pair<BucketContents, BucketContents>(a, b);
}
public BucketContents() {}
public BucketContents(BucketContents a, BucketContents b) {
if (a != null) {
entries.addAll(a.entries);
}
if (b != null) {
entries.addAll(b.entries);
}
}
}
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