zhouxy108/fastdfs-client-java
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feature: set default failover size

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This commit is contained in:
tanyawen01770
2023-01-28 16:51:33 +08:00
parent 0b2ec3aa10
commit 77946b2382
5 changed files with 63 additions and 34 deletions
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16
src/main/java/org/csource/fastdfs/ClientGlobal.java
View File

@@ -63,7 +63,7 @@ public class ClientGlobal {
public static final int DEFAULT_CONNECTION_POOL_MAX_IDLE_TIME = 3600 ;//second
public static final int DEFAULT_CONNECTION_POOL_MAX_WAIT_TIME_IN_MS = 1000 ;//millisecond
public static final int DEFAULT_FAIL_OVER_RETRY_COUNT = 1;
public static final int DEFAULT_FAIL_OVER_RETRY_COUNT = -1;
public static int g_connect_timeout = DEFAULT_CONNECT_TIMEOUT * 1000; //millisecond
public static int g_network_timeout = DEFAULT_NETWORK_TIMEOUT * 1000; //millisecond
@@ -77,7 +77,7 @@ public class ClientGlobal {
public static int g_connection_pool_max_idle_time = DEFAULT_CONNECTION_POOL_MAX_IDLE_TIME * 1000; //millisecond
public static int g_connection_pool_max_wait_time_in_ms = DEFAULT_CONNECTION_POOL_MAX_WAIT_TIME_IN_MS; //millisecond
public static int g_fail_over_retry_count = DEFAULT_FAIL_OVER_RETRY_COUNT ;//get connection retry count when fail
public static int g_fail_over_retry_count = 0;//get connection retry count when fail
public static TrackerGroup g_tracker_group;
@@ -146,6 +146,12 @@ public class ClientGlobal {
g_connection_pool_max_wait_time_in_ms = DEFAULT_CONNECTION_POOL_MAX_WAIT_TIME_IN_MS;
}
g_fail_over_retry_count = iniReader.getIntValue("fail_over_retry_count", DEFAULT_FAIL_OVER_RETRY_COUNT);
if (g_fail_over_retry_count == DEFAULT_FAIL_OVER_RETRY_COUNT) {
//缺省值为tracker server数量 -1
if (tracker_servers.length > 1) {
g_fail_over_retry_count = tracker_servers.length -1;
}
}
}
/**
@@ -221,6 +227,12 @@ public class ClientGlobal {
}
if (failOverRetryCount != null && failOverRetryCount.trim().length() != 0) {
g_fail_over_retry_count = Integer.parseInt(failOverRetryCount);
if(g_fail_over_retry_count == DEFAULT_FAIL_OVER_RETRY_COUNT) {
int trackerLength = g_tracker_group.tracker_servers.length;
if (trackerLength > 1) {
g_fail_over_retry_count = trackerLength - 1;
}
}
}
}

70
src/main/java/org/csource/fastdfs/TrackerClient.java
View File

@@ -72,39 +72,55 @@ public class TrackerClient {
}
public Connection getConnection(TrackerServer trackerServer) throws IOException, MyException {
if (ClientGlobal.g_fail_over_retry_count > 0) {
int retryCount = 0;
do {
try {
trackerServer = getTrackerServer();
if (trackerServer == null) {
throw new MyException("tracker server is empty!");
}
return trackerServer.getConnection();
} catch (IOException e) {
if (retryCount <= ClientGlobal.g_fail_over_retry_count) {
//allow retry ignore exception
System.err.println("trackerServer get connection error, get connection from next tracker, emsg:" + e.getMessage());
} else {
throw e;
}
} catch (MyException e) {
if (retryCount <= ClientGlobal.g_fail_over_retry_count) {
System.err.println("trackerServer get connection error, get connection from next tracker, emsg:" + e.getMessage());
//allow retry ignore exception
} else {
throw e;
}
}
} while (retryCount++ <= ClientGlobal.g_fail_over_retry_count);
} else {
Connection connection = null;
boolean failOver = ClientGlobal.g_fail_over_retry_count > 0 && trackerServer == null;
try {
if (trackerServer == null) {
trackerServer = getTrackerServer();
if (trackerServer == null) {
throw new MyException("tracker server is empty!");
}
}
trackerServer.getConnection();
connection = trackerServer.getConnection();
} catch (IOException e) {
if (failOver) {
System.err.println("default trackerServer get connection error, emsg:" + e.getMessage());
} else {
throw e;
}
} catch (MyException e) {
if (failOver) {
System.err.println("default trackerServer get connection error, emsg:" + e.getMessage());
} else {
throw e;
}
}
if (connection != null || !failOver) {
return connection;
}
int retryCount = 0;
while (retryCount++ <= ClientGlobal.g_fail_over_retry_count) {
try {
trackerServer = getTrackerServer();
if (trackerServer == null) {
throw new MyException("tracker server is empty!");
}
return trackerServer.getConnection();
} catch (IOException e) {
if (retryCount <= ClientGlobal.g_fail_over_retry_count) {
//allow retry ignore exception
System.err.println("retry trackerServer get connection error, get connection from next tracker, retryCount:" + retryCount + ",+ emsg:" + e.getMessage());
} else {
throw e;
}
} catch (MyException e) {
if (retryCount <= ClientGlobal.g_fail_over_retry_count) {
System.err.println("trackerServer get connection error, get connection from next tracker, retryCount:" + retryCount + ", emsg:" + e.getMessage());
//allow retry ignore exception
} else {
throw e;
}
}
}
return null;
}