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This commit is contained in:
Chris Lu 2020-11-13 12:47:46 -08:00
parent 3e362451d2
commit 824e96ffcc
1 changed files with 13 additions and 9 deletions
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other/java/examples/src/main/java/com/seaweedfs/examples/WatchFiles.java
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@ -1,38 +1,42 @@
package com.seaweedfs.examples; package com.seaweedfs.examples;
import seaweedfs.client.FilerClient; import seaweedfs.client.FilerClient;
import seaweedfs.client.FilerGrpcClient;
import seaweedfs.client.FilerProto; import seaweedfs.client.FilerProto;
import java.io.IOException; import java.io.IOException;
import java.util.Date;
import java.util.Iterator; import java.util.Iterator;
public class WatchFiles { public class WatchFiles {
public static void main(String[] args) throws IOException { public static void main(String[] args) throws IOException {
FilerGrpcClient filerGrpcClient = new FilerGrpcClient("localhost", 18888);
FilerClient filerClient = new FilerClient(filerGrpcClient); FilerClient filerClient = new FilerClient("localhost", 18888);
long sinceNs = (System.currentTimeMillis() - 3600 * 1000) * 1000000L;
Iterator<FilerProto.SubscribeMetadataResponse> watch = filerClient.watch( Iterator<FilerProto.SubscribeMetadataResponse> watch = filerClient.watch(
"/buckets", "/buckets",
"exampleClient", "exampleClientName",
System.currentTimeMillis() * 1000000L sinceNs
); );
System.out.println("Connected to filer, subscribing from " + new Date());
while (watch.hasNext()) { while (watch.hasNext()) {
FilerProto.SubscribeMetadataResponse event = watch.next(); FilerProto.SubscribeMetadataResponse event = watch.next();
FilerProto.EventNotification notification = event.getEventNotification(); FilerProto.EventNotification notification = event.getEventNotification();
if (notification.getNewParentPath() != null) { if (!event.getDirectory().equals(notification.getNewParentPath())) {
// move an entry to a new directory, possibly with a new name // move an entry to a new directory, possibly with a new name
if (notification.hasOldEntry() && notification.hasNewEntry()) { if (notification.hasOldEntry() && notification.hasNewEntry()) {
System.out.println("move " + event.getDirectory() + "/" + notification.getOldEntry().getName() + " to " + notification.getNewParentPath() + "/" + notification.getNewEntry().getName()); System.out.println("moved " + event.getDirectory() + "/" + notification.getOldEntry().getName() + " to " + notification.getNewParentPath() + "/" + notification.getNewEntry().getName());
} else { } else {
System.out.println("this should not happen."); System.out.println("this should not happen.");
} }
} else if (notification.hasNewEntry() && !notification.hasOldEntry()) { } else if (notification.hasNewEntry() && !notification.hasOldEntry()) {
System.out.println("create entry " + event.getDirectory() + "/" + notification.getNewEntry().getName()); System.out.println("created entry " + event.getDirectory() + "/" + notification.getNewEntry().getName());
} else if (!notification.hasNewEntry() && notification.hasOldEntry()) { } else if (!notification.hasNewEntry() && notification.hasOldEntry()) {
System.out.println("delete entry " + event.getDirectory() + "/" + notification.getOldEntry().getName()); System.out.println("deleted entry " + event.getDirectory() + "/" + notification.getOldEntry().getName());
} else if (notification.hasNewEntry() && notification.hasOldEntry()) { } else if (notification.hasNewEntry() && notification.hasOldEntry()) {
System.out.println("updated entry " + event.getDirectory() + "/" + notification.getNewEntry().getName()); System.out.println("updated entry " + event.getDirectory() + "/" + notification.getNewEntry().getName());
} }