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Source Code for Connector/J 8.0.31 - User Impl
Where to get the Java source code for Connector/J 8.0 User Impl module?
✍: FYIcenter.com
Java source code files for Connector/J 8.0 User Impl module are:
⏎ com/mysql/cj/jdbc/ha/ReplicationConnectionGroup.java
/* * Copyright (c) 2013, 2020, Oracle and/or its affiliates. * * This program is free software; you can redistribute it and/or modify it under * the terms of the GNU General Public License, version 2.0, as published by the * Free Software Foundation. * * This program is also distributed with certain software (including but not * limited to OpenSSL) that is licensed under separate terms, as designated in a * particular file or component or in included license documentation. The * authors of MySQL hereby grant you an additional permission to link the * program and your derivative works with the separately licensed software that * they have included with MySQL. * * Without limiting anything contained in the foregoing, this file, which is * part of MySQL Connector/J, is also subject to the Universal FOSS Exception, * version 1.0, a copy of which can be found at * http://oss.oracle.com/licenses/universal-foss-exception. * * This program is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0, * for more details. * * You should have received a copy of the GNU General Public License along with * this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ package com.mysql.cj.jdbc.ha; import java.sql.SQLException; import java.util.Collection; import java.util.HashMap; import java.util.List; import java.util.Set; import java.util.concurrent.CopyOnWriteArraySet; /** * Group of connection objects which can be configured as a group. This is used for promotion/demotion of replicas and sources in a replication configuration, * and for exposing metrics around replication-aware connections. */ public class ReplicationConnectionGroup { private String groupName; private long connections = 0; private long replicasAdded = 0; private long replicasRemoved = 0; private long replicasPromoted = 0; private long activeConnections = 0; private HashMap<Long, ReplicationConnection> replicationConnections = new HashMap<>(); private Set<String> replicaHostList = new CopyOnWriteArraySet<>(); private boolean isInitialized = false; private Set<String> sourceHostList = new CopyOnWriteArraySet<>(); ReplicationConnectionGroup(String groupName) { this.groupName = groupName; } public long getConnectionCount() { return this.connections; } public long registerReplicationConnection(ReplicationConnection conn, List<String> localSourceList, List<String> localReplicaList) { long currentConnectionId; synchronized (this) { if (!this.isInitialized) { if (localSourceList != null) { this.sourceHostList.addAll(localSourceList); } if (localReplicaList != null) { this.replicaHostList.addAll(localReplicaList); } this.isInitialized = true; } currentConnectionId = ++this.connections; this.replicationConnections.put(Long.valueOf(currentConnectionId), conn); } this.activeConnections++; return currentConnectionId; } public String getGroupName() { return this.groupName; } public Collection<String> getSourceHosts() { return this.sourceHostList; } /** * Use {@link #getSourceHosts()} instead. * * @return source hosts * @deprecated */ @Deprecated public Collection<String> getMasterHosts() { return getSourceHosts(); } public Collection<String> getReplicaHosts() { return this.replicaHostList; } /** * Use {@link #getReplicaHosts()} instead. * * @return replica hosts * @deprecated */ @Deprecated public Collection<String> getSlaveHosts() { return getReplicaHosts(); } /** * Adds a host to the replicas hosts list. * * We can safely assume that if this host was added to the replicas list, then it must be added to each one of the replication connections from this group * as well. * Unnecessary calls to {@link ReplicationConnection#addReplicaHost(String)} could result in undesirable locking issues, assuming that this method is * synchronized by nature. * * This is a no-op if the group already has this host in a replica role. * * @param hostPortPair * "host:port" * @throws SQLException * if an error occurs */ public void addReplicaHost(String hostPortPair) throws SQLException { // only add if it's not already a replica host if (this.replicaHostList.add(hostPortPair)) { this.replicasAdded++; // add the replica to all connections: for (ReplicationConnection c : this.replicationConnections.values()) { c.addReplicaHost(hostPortPair); } } } /** * Use {@link #addReplicaHost(String)} instead. * * @param hostPortPair * host:port * @throws SQLException * @deprecated */ @Deprecated public void addSlaveHost(String hostPortPair) throws SQLException { addReplicaHost(hostPortPair); } public void handleCloseConnection(ReplicationConnection conn) { this.replicationConnections.remove(conn.getConnectionGroupId()); this.activeConnections--; } /** * Removes a host from the replicas hosts list. * * We can safely assume that if this host was removed from the replicas list, then it must be removed from each one of the replication connections from this * group as well. * Unnecessary calls to {@link ReplicationConnection#removeReplica(String, boolean)} could result in undesirable locking issues, assuming that this method * is * synchronized by nature. * * This is a no-op if the group doesn't have this host in a replica role. * * @param hostPortPair * "host:port" * @param closeGently * remove host when it's not in use * @throws SQLException * if an error occurs */ public void removeReplicaHost(String hostPortPair, boolean closeGently) throws SQLException { if (this.replicaHostList.remove(hostPortPair)) { this.replicasRemoved++; // remove the replica from all connections: for (ReplicationConnection c : this.replicationConnections.values()) { c.removeReplica(hostPortPair, closeGently); } } } /** * Use {@link #removeReplicaHost(String, boolean)} instead. * * @param hostPortPair * host:port * @param closeGently * option * @throws SQLException * @deprecated */ @Deprecated public void removeSlaveHost(String hostPortPair, boolean closeGently) throws SQLException { removeReplicaHost(hostPortPair, closeGently); } /** * Promotes a replica host to source. * * We can safely assume that if this host was removed from the replicas list or added to the sources list, then the same host promotion must happen in each * one of the replication connections from this group as well. * Unnecessary calls to {@link ReplicationConnection#promoteReplicaToSource(String)} could result in undesirable locking issues, assuming that this method * is * synchronized by nature. * * This is a no-op if the group already has this host in a source role and not in replica role. * * @param hostPortPair * "host:port" * @throws SQLException * if an error occurs */ public void promoteReplicaToSource(String hostPortPair) throws SQLException { // remove host from replicas AND add host to sources, note that both operands need to be evaluated. if (this.replicaHostList.remove(hostPortPair) | this.sourceHostList.add(hostPortPair)) { this.replicasPromoted++; for (ReplicationConnection c : this.replicationConnections.values()) { c.promoteReplicaToSource(hostPortPair); } } } /** * Use {@link #promoteReplicaToSource(String)} instead. * * @param hostPortPair * host:port * @throws SQLException * @deprecated */ @Deprecated public void promoteSlaveToMaster(String hostPortPair) throws SQLException { promoteReplicaToSource(hostPortPair); } /** * Removes a host from the sources hosts list. * * @param hostPortPair * host:port * @throws SQLException * if an error occurs */ public void removeSourceHost(String hostPortPair) throws SQLException { this.removeSourceHost(hostPortPair, true); } /** * Use {@link #removeSourceHost(String)} instead. * * @param hostPortPair * host:port * @throws SQLException * @deprecated */ @Deprecated public void removeMasterHost(String hostPortPair) throws SQLException { removeSourceHost(hostPortPair); } /** * Removes a host from the sources hosts list. * * We can safely assume that if this host was removed from the sources list, then it must be removed from each one of the replication connections from this * group as well. * Unnecessary calls to {@link ReplicationConnection#removeSourceHost(String, boolean)} could result in undesirable locking issues, assuming that this * method is synchronized by nature. * * This is a no-op if the group doesn't have this host in a source role. * * @param hostPortPair * "host:port" * @param closeGently * remove host when it's not in use * @throws SQLException * if an error occurs */ public void removeSourceHost(String hostPortPair, boolean closeGently) throws SQLException { if (this.sourceHostList.remove(hostPortPair)) { // remove the source from all connections: for (ReplicationConnection c : this.replicationConnections.values()) { c.removeSourceHost(hostPortPair, closeGently); } } } /** * Use {@link #removeSourceHost(String, boolean)} instead. * * @param hostPortPair * host:port * @param closeGently * option * @throws SQLException * @deprecated */ @Deprecated public void removeMasterHost(String hostPortPair, boolean closeGently) throws SQLException { removeSourceHost(hostPortPair, closeGently); } public int getConnectionCountWithHostAsReplica(String hostPortPair) { int matched = 0; for (ReplicationConnection c : this.replicationConnections.values()) { if (c.isHostReplica(hostPortPair)) { matched++; } } return matched; } /** * Use {@link #getConnectionCountWithHostAsReplica(String)} instead. * * @param hostPortPair * host:port * @return count * @deprecated */ @Deprecated public int getConnectionCountWithHostAsSlave(String hostPortPair) { return getConnectionCountWithHostAsReplica(hostPortPair); } public int getConnectionCountWithHostAsSource(String hostPortPair) { int matched = 0; for (ReplicationConnection c : this.replicationConnections.values()) { if (c.isHostSource(hostPortPair)) { matched++; } } return matched; } /** * Use {@link #getConnectionCountWithHostAsSource(String)} instead. * * @param hostPortPair * host:port * @return count * @deprecated */ @Deprecated public int getConnectionCountWithHostAsMaster(String hostPortPair) { return getConnectionCountWithHostAsSource(hostPortPair); } public long getNumberOfReplicasAdded() { return this.replicasAdded; } /** * Use {@link #getNumberOfReplicasAdded()} instead. * * @return count * @deprecated */ @Deprecated public long getNumberOfSlavesAdded() { return getNumberOfReplicasAdded(); } public long getNumberOfReplicasRemoved() { return this.replicasRemoved; } /** * Use {@link #getNumberOfReplicasRemoved()} instead. * * @return count * @deprecated */ @Deprecated public long getNumberOfSlavesRemoved() { return getNumberOfReplicasRemoved(); } public long getNumberOfReplicaPromotions() { return this.replicasPromoted; } /** * Use {@link #getNumberOfReplicaPromotions()} instead. * * @return count * @deprecated */ @Deprecated public long getNumberOfSlavePromotions() { return getNumberOfReplicaPromotions(); } public long getTotalConnectionCount() { return this.connections; } public long getActiveConnectionCount() { return this.activeConnections; } @Override public String toString() { return "ReplicationConnectionGroup[groupName=" + this.groupName + ",sourceHostList=" + this.sourceHostList + ",replicaHostList=" + this.replicaHostList + "]"; } }
⏎ com/mysql/cj/jdbc/ha/ReplicationConnectionGroup.java
Or download all of them as a single archive file:
File name: mysql-connector-java-user-impl-8.0.31.zip File size: 429580 bytes Release date: 2022-09-03 Download
⇒ Downloading mysql-connector-java-5.1.40.zip
⇐ Source Code for Connector/J 8.0.31 - User API
2023-05-09, 7678👍, 0💬
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