-
Notifications
You must be signed in to change notification settings - Fork 2
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
* sync * sync * MonitoredFileConsumerTest * clean-up tests * move test * revert MonitoredFileConsumer * static import fix * refactor record offset calculation * 2 sec delay before delete is enough for catchup * optimize statestore update
- Loading branch information
Showing
10 changed files
with
976 additions
and
131 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
119 changes: 119 additions & 0 deletions
119
src/main/java/com/teragrep/rlo_13/statestore/LMDBStateStore.java
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,119 @@ | ||
| /* | ||
| Java Stateful File Reader rlo_13 | ||
| Copyright (C) 2023 Suomen Kanuuna Oy | ||
| 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.teragrep.rlo_13.statestore; | ||
|
|
||
| import org.lmdbjava.Dbi; | ||
| import org.lmdbjava.Env; | ||
| import org.lmdbjava.Txn; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
|
|
||
| import java.nio.ByteBuffer; | ||
| import java.nio.file.Path; | ||
|
|
||
| import static java.nio.ByteBuffer.allocateDirect; | ||
| import static java.nio.charset.StandardCharsets.UTF_8; | ||
| import static org.lmdbjava.DbiFlags.MDB_CREATE; | ||
| import static org.lmdbjava.Env.create; | ||
|
|
||
| public class LMDBStateStore implements StateStore { | ||
| private static final Logger LOGGER = LoggerFactory.getLogger(LMDBStateStore.class); | ||
|
|
||
| private final Env<ByteBuffer> env; | ||
| private final Dbi<ByteBuffer> db; | ||
|
|
||
| private final KeyHashProvider keyHashProvider = new KeyHashProvider(); | ||
| public LMDBStateStore(Path stateStorePath) { | ||
| env = | ||
| Env.create() | ||
| // 2 * 1024 * 1024 * 1024 / (64 (sha-256) + 8 (Long.BYTES) = 29M files | ||
| .setMapSize((long) 2 * 1024 * 1024 * 1024) // | ||
| .setMaxDbs(2) | ||
| .open(stateStorePath.toFile()); | ||
|
|
||
| db = env.openDbi("StateStore", MDB_CREATE); | ||
| getVersion(); | ||
| } | ||
|
|
||
| private long getVersion() { | ||
| Dbi<ByteBuffer> versionDb = env.openDbi("VersionStore", MDB_CREATE); | ||
|
|
||
| byte[] versionStringBytes = "StateStoreVersion".getBytes(UTF_8); | ||
| final ByteBuffer key = allocateDirect(env.getMaxKeySize()); | ||
| key.put(versionStringBytes).flip(); | ||
|
|
||
| try (Txn<ByteBuffer> txn = env.txnRead()) { | ||
| final ByteBuffer found = versionDb.get(txn, key); | ||
| if (found == null) { | ||
| // new DB | ||
| long version = 1; | ||
| LOGGER.trace("Created new StateStore with version <{}>", version); | ||
| ByteBuffer byteBuffer = ByteBuffer.allocateDirect(Long.BYTES); | ||
| byteBuffer.putLong(version).flip(); | ||
| versionDb.put(key,byteBuffer); | ||
| return version; | ||
| } | ||
| else { | ||
| final ByteBuffer fetchedVal = txn.val(); | ||
| long version = fetchedVal.getLong(); | ||
| LOGGER.trace("Found existing StateStore with version <{}>", version); | ||
| return version; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public void setOffset(Path path, long offset) { | ||
|
|
||
| final ByteBuffer val = allocateDirect(Long.BYTES); | ||
| val.putLong(offset).flip(); | ||
|
|
||
| ByteBuffer key = keyHashProvider.getKey(path); | ||
| db.put(key, val); | ||
| } | ||
|
|
||
| @Override | ||
| public void deleteOffset(Path path) { | ||
| ByteBuffer key = keyHashProvider.getKey(path); | ||
| db.delete(key); | ||
| } | ||
|
|
||
| @Override | ||
| public long getOffset(Path path) { | ||
| ByteBuffer key = keyHashProvider.getKey(path); | ||
|
|
||
| try (Txn<ByteBuffer> txn = env.txnRead()) { | ||
| final ByteBuffer found = db.get(txn, key); | ||
| if (found == null) { | ||
| return 0; | ||
| } | ||
| else { | ||
| final ByteBuffer fetchedVal = txn.val(); | ||
| return fetchedVal.getLong(); | ||
| } | ||
| } | ||
|
|
||
| } | ||
|
|
||
|
|
||
|
|
||
| @Override | ||
| public void close() { | ||
| env.close(); | ||
| } | ||
| } |
Oops, something went wrong.