我正在执行POC来检查Streaming API的稳定性，POC如下
程序1：订阅针对Account对象创建的pushtopic 计划2：创建，更新和每10分钟间隔后删除一条记录
这两个程序都保持运行超过12小时（留下过夜），之后我验证是否收到所有通知，并发现在一段时间后（在这种情况下，它差不多~2小时45分钟）没有通知收到了，我重复了两次这两种情况都会在一段时间后停止收到通知。
使用的测试代码
Streaming API客户端（使用EMP连接器）
public class SFPoc {
static Long count = 0L;
static Long Leadcount = 0L;
public static void main(String[] argv) throws Exception {
String userName = "<user_name>";
String password = "<pwd>";
String pushTopicName = "/topic/AccountPT";
String pushTopicNameLead = "/topic/Leadwhere";
long replayFrom = EmpConnector.REPLAY_FROM_EARLIEST;
String securityToken = "<token>";
BayeuxParameters custom = getBayeuxParamWithSpecifiedAPIVersion("37.0");
BayeuxParameters params = null;
try {
params = login(userName, password + securityToken, custom);
} catch (Exception e) {
e.printStackTrace();
}
Consumer<Map<String, Object>> consumer = event -> System.out.println(String.format("Received:\n%s ** Recieved at %s, event count total %s", event, LocalDateTime.now() , ++count));
Consumer<Map<String, Object>> consumerLead = event -> System.out.println(String.format("****** LEADS ***** Received:\n%s ** Recieved at %s, event count total %s", event, LocalDateTime.now() , ++Leadcount));
EmpConnector connector = new EmpConnector(params);
connector.start().get(10, TimeUnit.SECONDS);
TopicSubscription subscription = connector.subscribe(pushTopicName, replayFrom, consumer).get(10, TimeUnit.SECONDS);
TopicSubscription subscriptionLead = connector.subscribe(pushTopicNameLead, replayFrom, consumerLead).get(10, TimeUnit.SECONDS);
System.out.println(String.format("Subscribed: %s", subscription));
System.out.println(String.format("Subscribed: %s", subscriptionLead));
}
private static BayeuxParameters getBayeuxParamWithSpecifiedAPIVersion(String apiVersion) {
BayeuxParameters params = new BayeuxParameters() {
@Override
public String version() {
return apiVersion;
}
@Override
public String bearerToken() {
return null;
}
};
return params;
}
}
定期创建/更新/删除记录的代码以生成事件
import com.sforce.soap.enterprise.*;
import com.sforce.soap.enterprise.Error;
import com.sforce.soap.enterprise.sobject.Account;
import com.sforce.soap.enterprise.sobject.Contact;
import com.sforce.ws.ConnectionException;
import com.sforce.ws.ConnectorConfig;
import java.time.LocalDateTime;
public class SFDCDataAdjustment {
static final String USERNAME = "<username>";
static final String PASSWORD = "<pwd&securitytoken>";
static EnterpriseConnection connection;
static Long count = 0L;
public static void main(String[] args) {
ConnectorConfig config = new ConnectorConfig();
config.setUsername(USERNAME);
config.setPassword(PASSWORD);
//config.setTraceMessage(true);
try {
connection = Connector.newConnection(config);
// display some current settings
System.out.println("Auth EndPoint: "+config.getAuthEndpoint());
System.out.println("Service EndPoint: "+config.getServiceEndpoint());
System.out.println("Username: "+config.getUsername());
System.out.println("SessionId: "+config.getSessionId());
// run the different examples
while (true) {
createAccounts();
updateAccounts();
deleteAccounts();
Thread.sleep(1 * 10 * 60 * 1000);
}
} catch (ConnectionException e1) {
e1.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
// queries and displays the 5 newest contacts
private static void queryContacts() {
System.out.println("Querying for the 5 newest Contacts...");
try {
// query for the 5 newest contacts
QueryResult queryResults = connection.query("SELECT Id, FirstName, LastName, Account.Name " +
"FROM Contact WHERE AccountId != NULL ORDER BY CreatedDate DESC LIMIT 5");
if (queryResults.getSize() > 0) {
for (int i=0;i<queryResults.getRecords().length;i++) {
// cast the SObject to a strongly-typed Contact
Contact c = (Contact)queryResults.getRecords()[i];
System.out.println("Id: " + c.getId() + " - Name: "+c.getFirstName()+" "+
c.getLastName()+" - Account: "+c.getAccount().getName());
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
// create 5 test Accounts
private static void createAccounts() {
System.out.println("Creating a new test Account...");
Account[] records = new Account[1];
try {
// create 5 test accounts
for (int i=0;i<1;i++) {
Account a = new Account();
a.setName("OptyAccount "+i);
records[i] = a;
}
// create the records in Salesforce.com
SaveResult[] saveResults = connection.create(records);
// check the returned results for any errors
for (int i=0; i< saveResults.length; i++) {
if (saveResults[i].isSuccess()) {
System.out.println(i+". Successfully created record - Id: " + saveResults[i].getId() + "At " + LocalDateTime.now());
System.out.println("************Event Count************" + ++count);
} else {
Error[] errors = saveResults[i].getErrors();
for (int j=0; j< errors.length; j++) {
System.out.println("ERROR creating record: " + errors[j].getMessage());
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
// updates the 5 newly created Accounts
private static void updateAccounts() {
System.out.println("Update a new test Accounts...");
Account[] records = new Account[1];
try {
QueryResult queryResults = connection.query("SELECT Id, Name FROM Account ORDER BY " +
"CreatedDate DESC LIMIT 1");
if (queryResults.getSize() > 0) {
for (int i=0;i<queryResults.getRecords().length;i++) {
// cast the SObject to a strongly-typed Account
Account a = (Account)queryResults.getRecords()[i];
System.out.println("Updating Id: " + a.getId() + " - Name: "+a.getName());
// modify the name of the Account
a.setName(a.getName()+" -- UPDATED");
records[i] = a;
}
}
// update the records in Salesforce.com
SaveResult[] saveResults = connection.update(records);
// check the returned results for any errors
for (int i=0; i< saveResults.length; i++) {
if (saveResults[i].isSuccess()) {
System.out.println(i+". Successfully updated record - Id: " + saveResults[i].getId() + "At " + LocalDateTime.now());
System.out.println("************Event Count************" + ++count);
} else {
Error[] errors = saveResults[i].getErrors();
for (int j=0; j< errors.length; j++) {
System.out.println("ERROR updating record: " + errors[j].getMessage());
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
// delete the 5 newly created Account
private static void deleteAccounts() {
System.out.println("Deleting new test Accounts...");
String[] ids = new String[1];
try {
QueryResult queryResults = connection.query("SELECT Id, Name FROM Account ORDER BY " +
"CreatedDate DESC LIMIT 1");
if (queryResults.getSize() > 0) {
for (int i=0;i<queryResults.getRecords().length;i++) {
// cast the SObject to a strongly-typed Account
Account a = (Account)queryResults.getRecords()[i];
// add the Account Id to the array to be deleted
ids[i] = a.getId();
System.out.println("Deleting Id: " + a.getId() + " - Name: "+a.getName());
}
}
// delete the records in Salesforce.com by passing an array of Ids
DeleteResult[] deleteResults = connection.delete(ids);
// check the results for any errors
for (int i=0; i< deleteResults.length; i++) {
if (deleteResults[i].isSuccess()) {
System.out.println(i+". Successfully deleted record - Id: " + deleteResults[i].getId() + "At " + LocalDateTime.now());
System.out.println("************Event Count************" + ++count);
} else {
Error[] errors = deleteResults[i].getErrors();
for (int j=0; j< errors.length; j++) {
System.out.println("ERROR deleting record: " + errors[j].getMessage());
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
进一步更新得到以下提到的错误，之后通知
2017-03-09T19：30：28.346 ERROR [com.salesforce.emp.connector.EmpConnector] - 连接失败，重新连接 org.cometd.common.TransportException：{httpCode = 503} at org.cometd.client.transport.LongPollingTransport $ 2.onComplete（LongPollingTransport.java:278） 在org.eclipse.jetty.client.ResponseNotifier.notifyComplete（ResponseNotifier.java:193）
此重新连接也发生了并且握手也发生但是错误似乎在重新订阅（）EMP连接器似乎无法由于某种原因重新订阅
注意我正在使用＆＃34; resubscribe-on-disconnect＆＃34; EMP connetor的分支
答案 0 :(得分：1)
我们已经确定在403案例中服务器端存在错误。 Streaming API使用会话路由cookie，此cookie定期到期。当它到期时，会话被路由到另一个服务器，并以403响应。在当前版本中，此403响应不包括连接建议，并且客户端不会尝试重新连接。这已得到修复，修复程序目前正在运行。我的理解是，这应该解决客户展示的重新连接问题。
答案 1 :(得分：0)
你能描述一下你的POC吗？你用过什么客户？你能分享POC结构和你正在做什么吗？
这有很多潜在的原因，但我无法理解客户，你正在尝试做什么，以及有关失败的更多信息。