我创建了一个Ubuntu运行 Couchbase 服务器的 VM，其中包含一个ships数据桶，其中加载了许多文档。
我正在尝试将此数据桶的简单拉取测试到在 Android 模拟器中运行的 Couchbase lite 数据库中。但是我遇到了很多问题！
我已经创建了一个config.json以下配置同步网关
{
"log":["CRUD+", "REST+", "Changes+", "Attach+"],
"verbose" : true,
"databases": {
"ships": {
"server":"http://192.168.0.9:8091",
"sync":`function (doc) { channel (doc.channels); }`,
"users": {
"GUEST": {
"disabled": false,
"admin_channels": ["*"]
}
}
}
}
}
当我启动同步网关时，它似乎启动正常
E:\Couchbase>sync_gateway ./data/config.json
2015-08-23T10:00:43.275+01:00 Enabling logging: [CRUD+ REST+ Changes+ Attach+]
2015-08-23T10:00:43.276+01:00 ==== Couchbase Sync Gateway/1.1.0(28;86f028c) ====
2015-08-23T10:00:43.276+01:00 Configured Go to use all 8 CPUs; setenv GOMAXPROCS
to override this
2015-08-23T10:00:43.277+01:00 WARNING: Error setting MaxFileDescriptors to 5000:
Unsupported on Windows -- rest.setMaxFileDescriptors() at config.go:443
2015-08-23T10:00:43.277+01:00 Opening db /ships as bucket "ships", pool "default
", server <http://192.168.0.9:8091>
2015-08-23T10:00:43.277+01:00 Opening Couchbase database ships on <http://192.16
8.0.9:8091>
2015/08/23 10:00:43 Trying with selected node 0
2015/08/23 10:00:43 Trying with selected node 0
2015-08-23T10:00:43.374+01:00 Reset guest user to config
2015-08-23T10:00:43.375+01:00 Starting admin server on 127.0.0.1:4985
2015-08-23T10:00:43.379+01:00 Starting server on :4984 ...
在我的 MainActivity 类中，我有以下方法来创建同步 URL
private URL createSyncURL(boolean isEncrypted){
URL syncURL = null;
String host = "https://10.0.2.2";
String port = "4984";
String dbName = "ships";
try {
syncURL = new URL(host + ":" + port + "/" + dbName);
} catch (MalformedURLException me) {
me.printStackTrace();
}
return syncURL;
}
以及调用复制过程的方法
private void startReplications() throws CouchbaseLiteException {
Replication pull = application.getDatabase().createPullReplication(this.createSyncURL(false));
pull.setContinuous(true);
pull.start();
if(!pull.isRunning()) {
Log.d(TAG, "Replication is not running due to " +pull.getLastError().getMessage());
Log.d(TAG, "Replication is not running due to " +pull.getLastError().getCause());
Log.d(TAG, "Replication is not running due to " +pull.getLastError().getStackTrace());
Log.d(TAG, "Replication is not running due to " +pull.getLastError().toString());
}
}
当我调用该startReplications()方法时，我收到以下异常
08-23 09:16:53.034 17976-18002/com.couchbase.examples.couchbaseevents E/RemoteRequest﹕ io exception. url: https://10.0.2.2:4984/ships/_local/74fbb4649e042fdae28537a02b680ad5890703e3
javax.net.ssl.SSLPeerUnverifiedException: No peer certificate
at com.android.org.conscrypt.SSLNullSession.getPeerCertificates(SSLNullSession.java:104)
at org.apache.http.conn.ssl.AbstractVerifier.verify(AbstractVerifier.java:98)
at org.apache.http.conn.ssl.SSLSocketFactory.createSocket(SSLSocketFactory.java:393)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:170)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:169)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:124)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:365)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:560)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:492)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:470)
at com.couchbase.lite.support.RemoteRequest.executeRequest(RemoteRequest.java:184)
at com.couchbase.lite.support.RemoteRequest.run(RemoteRequest.java:103)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(ScheduledThreadPoolExecutor.java:152)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:265)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:818)
如果我尝试将 URL 更改为http://10.0.2.2然后我得到以下
08-23 09:23:33.012 20702-20702/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.couchbase.examples.couchbaseevents, PID: 20702
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.couchbase.examples.couchbaseevents/com.couchbase.examples.couchbaseevents.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Throwable.getMessage()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.lang.Throwable.getMessage()' on a null object reference
at com.couchbase.examples.couchbaseevents.MainActivity.startReplications(MainActivity.java:139)
at com.couchbase.examples.couchbaseevents.MainActivity.onCreate(MainActivity.java:56)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
看看同步网关控制台，我可以看到以下内容
2015-08-23T10:23:38.094+01:00 HTTP: #001: GET /ships/_local/bfdf0950d51e390e054
bb31f2895d54b286c36a1
2015-08-23T10:23:38.095+01:00 HTTP: #001: --> 404 missing (1.0 ms)
2015-08-23T10:23:38.128+01:00 HTTP: #002: POST /ships/_changes
2015-08-23T10:23:38.128+01:00 Changes: MultiChangesFeed({*}, {Since:0 Limit:0 Co
nflicts:true IncludeDocs:false Wait:false Continuous:false Terminator:0xc0820a92
c0 HeartbeatMs:300000 TimeoutMs:0}) ...
2015-08-23T10:23:38.129+01:00 Changes+: MultiChangesFeed: channels expand to cha
nnels.TimedSet{"!":0x1, "*":0x1} ...
2015-08-23T10:23:38.206+01:00 Changes+: MultiChangesFeed sending &{Seq:1 ID:_use
r/GUEST Deleted:false Removed:{} Doc:map[] Changes:[] Err:<nil> branched:false}
2015-08-23T10:23:38.207+01:00 Changes: MultiChangesFeed done
2015-08-23T10:23:38.229+01:00 HTTP: #003: POST /ships/_changes
2015-08-23T10:23:38.230+01:00 Changes: MultiChangesFeed({*}, {Since:1 Limit:50 C
onflicts:true IncludeDocs:false Wait:true Continuous:false Terminator:0xc0822c21
80 HeartbeatMs:300000 TimeoutMs:0}) ...
2015-08-23T10:23:38.230+01:00 Changes+: MultiChangesFeed: channels expand to cha
nnels.TimedSet{"*":0x1, "!":0x1} ...
2015-08-23T10:23:38.230+01:00 Changes+: MultiChangesFeed waiting...
2015-08-23T10:23:38.230+01:00 Changes+: Waiting for "ships"'s count to pass 0
我不明白为什么我会收到 404 响应？如果我使用浏览器访问http://127.0.0.1:4984/ships/_local/ee1ac8f4b732441355817ac7e9446c27e4089efb我会得到以下 JSON 响应
{"error":"not_found","reason":"missing"}
ships数据桶肯定存在于 couchbase 服务器上