GoogleCloudStorageExceptions.java
It looks like HttpResponseException is created without message.
public static GoogleJsonResponseException createJsonResponseException(
GoogleJsonError e, HttpHeaders responseHeaders) {
if (e != null) {
// ISSUE: HttpResponseException.Builder() constructor below doesn't set HttpResponseException.Builder.message.
// HttpResponseException.Builder.message is passed to Throwable.detailMessage that is printed in Throwable.toString().
// As a result, received from server exception doesn't print any information, it prints: null.
return new GoogleJsonResponseException(
new HttpResponseException.Builder(e.getCode(), e.getMessage(), responseHeaders), e);
}
return null;
}
Related
public Map<String, BigDecimal> getData(Set<String> ids, Boolean flag) {
Map<String, BigDecimal> data = new HashMap<>();
if(flag == null){
try {
data = *code logic*
} catch (RuntimeException e) {
log.error("Error occurred while fetching data : {}", e.getMessage());
}
}
else{
try {
data = *code logic*;
} catch (RuntimeException e) {
log.error("Error occurred while fetching data : {}", e.getMessage());
}
}
return data;
Whenever the value of flag is passed as null I am getting this error :
Failed to convert value of type 'java.lang.String' to required type 'java.lang.Boolean'; nested exception is java.lang.IllegalArgumentException: Invalid boolean value [null]
Why is this happening? Isn't the wrapper class Boolean supposed to hold values true, false and null?
I'm use the #FeignClient and want to do some logic(like record the exception information) when Feign throw Exception and then reply the result to front end.
I noticed Feign will throw FeignException when connection fail or http status not expect.
So I defined a #ExceptionHandler to caught FeignException after the callback method was invoked.
#ExceptionHandler(value = FeignException.class)
#ResponseBody
public ResponseResult feignException(FeignException exception){
String message = exception.getMessage();
byte[] content = exception.content();
int status = exception.status();
if(content!=null){
String response=new String(content);
message=String.format("%s response message : %s",message,response);
}
log.warn("{} : {} , cause by : {}",exception.getClass().getSimpleName(),message,exception.getCause());
return ResponseResult.fail(HttpStatus.valueOf(status),String.format("9%s00",status),message);
But it can't caught when I set the callback or callbackFactory of #FeignClient.
#FeignClient(url = "${onboardingcase.uri}",name = "OnBoardingCaseService",
fallbackFactory = OnBoardingCaseServiceFallBack.class)
#Component
#Slf4j
public class OnBoardingCaseServiceFallBack implements FallbackFactory<OnBoardingCaseService> {
#Override
public OnBoardingCaseService create(Throwable throwable) {
return new OnBoardingCaseService() {
#Override
public OnBoardingCaseVo query(String coid) {
if(throwable instanceof FeignException){
throw (FeignException)throwable;
}
return null;
}
};
}
}
I noticed because hystrix took over this method.And will catch exception in HystrixInvocationHandler.
try {
Object fallback = HystrixInvocationHandler.this.fallbackFactory.create(this.getExecutionException());
Object result = ((Method)HystrixInvocationHandler.this.fallbackMethodMap.get(method)).invoke(fallback, args);
if (HystrixInvocationHandler.this.isReturnsHystrixCommand(method)) {
return ((HystrixCommand)result).execute();
} else if (HystrixInvocationHandler.this.isReturnsObservable(method)) {
return ((Observable)result).toBlocking().first();
} else if (HystrixInvocationHandler.this.isReturnsSingle(method)) {
return ((Single)result).toObservable().toBlocking().first();
} else if (HystrixInvocationHandler.this.isReturnsCompletable(method)) {
((Completable)result).await();
return null;
} else {
return HystrixInvocationHandler.this.isReturnsCompletableFuture(method) ? ((Future)result).get() : result;
}
} catch (IllegalAccessException var3) {
throw new AssertionError(var3);
} catch (ExecutionException | InvocationTargetException var4) {
throw new AssertionError(var4.getCause());
} catch (InterruptedException var5) {
Thread.currentThread().interrupt();
throw new AssertionError(var5.getCause());
}
So I want to know how can I throw an exception when I using callback / callbackFactory or there is another way to instead callbackFactory to do the "call back"?
Many Thanks
I found a solution to this problem.
public class OnBoardingCaseServiceFallBack implements FallbackFactory<OnBoardingCaseService> {
#Override
public OnBoardingCaseService create(Throwable throwable) {
return new OnBoardingCaseService() {
#Override
public OnBoardingCaseVo query(String coid) {
log.error("OnBoardingCaseService#query fallback , exception",throwable);
if(throwable instanceof FeignException){
throw (FeignException)throwable;
}
return null;
}
};
}
}
And then caught the HystrixRuntimeException and get the cause of exception in ExceptionHandler for get the realException that was wrapped by Hystrix.
#ExceptionHandler(value = HystrixRuntimeException.class)
#ResponseBody
public ResponseResult hystrixRuntimeException(HystrixRuntimeException exception){
Throwable fallbackException = exception.getFallbackException();
Throwable assertError = fallbackException.getCause();
Throwable realException = assertError.getCause();
if(realException instanceof FeignException){
FeignException feignException= (FeignException) realException;
String message = feignException.getMessage();
byte[] content = feignException.content();
int status = feignException.status();
if(content!=null){
String response=new String(content);
message=String.format("%s response message : %s",message,response);
}
return ResponseResult.fail(HttpStatus.valueOf(status),String.format("9%s00",status),message);
}
String message = exception.getMessage();
log.warn("{} : {} , cause by : {}",exception.getClass().getSimpleName(),message,exception.getCause());
return ResponseResult.fail(ResultCode.FAIL.httpStatus(),ResultCode.FAIL.code(),message);
}
But I don't think that's a good way~
I have never done this in fallback, I have implemented custom error decoder(“CustomFeignErrorDecoder”) class and extended feign.codec.ErrorDecoder, every time an error occurs it comes to this class.
In decode function throw a custom exception and catch it in the controller or service layer to show your message to the frontend.
Example:
#Component
public class CustomFeignErrorDecoder implements ErrorDecoder {
#Override
public Exception decode(String methodKey, Response response) {
throw new CustomFeignErrorDecoderException(methodKey +" response status "+ response.status() +" request "+ response.request()+ " method "+ response.request().httpMethod());
}
}
This could be a silly question. But I am new to EF.
I am using EF and I would like to retry connecting to database in case there is error while opening the connection.How to handle exception while trying to open connection using DbContext.
using (var db = myDbFactory.GetContext())
{
// implementation goes here
}
Wrap your using with an try/catch block.
try{
using (var db = myDbFactory.GetContext())
{
// implementation goes here
}
}
catch(Exception ex){
//Retry
}
Sometime back, I have written this exception helper class to get DbException from EF.
using System;
using System.Collections.Generic;
using System.ComponentModel.Composition;
using System.Data.Entity.Validation;
using System.Data.SqlClient;
using System.Linq;
using System.Text;
namespace JIMS.Common.Utils
{
public static class ExceptionExtensions
{
public static IEnumerable<Exception> GetAllExceptions(this Exception ex)
{
Exception currentEx = ex;
yield return currentEx;
while ( currentEx.InnerException != null )
{
currentEx = currentEx.InnerException;
yield return currentEx;
}
}
public static IEnumerable<string> GetAllExceptionsAsString(this Exception ex)
{
Exception currentEx = ex;
yield return currentEx.ToString();
while ( currentEx.InnerException != null )
{
currentEx = currentEx.InnerException;
yield return currentEx.ToString();
}
}
public static IEnumerable<string> GetAllExceptionMessages(this Exception ex)
{
Exception currentEx = ex;
yield return currentEx.Message;
while ( currentEx.InnerException != null )
{
currentEx = currentEx.InnerException;
yield return currentEx.Message;
}
}
/// <summary>
/// Tries to get Database Exception, if there is any SqlException in the exception hierarchy, else return the exception message.
/// </summary>
/// <param name="ex"></param>
/// <returns>Exception Message</returns>
public static string TryGetDbExceptionMessage(this Exception ex)
{
if ( ex.GetBaseException() is SqlException )
{
SqlException sqlex = (SqlException)ex.GetBaseException();
return sqlex.Message;
}
if ( ex.GetBaseException() is DbEntityValidationException )
{
DbEntityValidationException dbEntityValidationException =
(DbEntityValidationException)ex.GetBaseException();
StringBuilder sb= new StringBuilder();
foreach ( var error in dbEntityValidationException.EntityValidationErrors.SelectMany(validationErrors => validationErrors.ValidationErrors) )
{
sb.AppendLine(string.Format("Property Name: {0} \nError Message: {1}\n" ,error.PropertyName ,
error.ErrorMessage));
}
return sb.ToString();
}
return ex.ToString();
}
}
}
I'm trying to get all emails (to, from, cc) from an email in a list and go through the list and check the contacts, if the Contact exists in CRM then a field on the email entity will be marked as true. When I check the to, from, and cc fields of the email it returns 0 parties, but there is no error there. Also at the end, when I'm calling service.Update(entity), it returns an error. An unexpected error occurred.
public void Execute(IServiceProvider serviceProvider)
{
IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider
.GetService(typeof(IPluginExecutionContext));
IOrganizationServiceFactory factory = (IOrganizationServiceFactory)serviceProvider
.GetService(typeof(IOrganizationServiceFactory));
IOrganizationService service = factory
.CreateOrganizationService(context.UserId);
try
{
Email entity;
if (context.MessageName == "Create")
{
if (context.PostEntityImages.Contains("PostImage")
&& context.PostEntityImages["PostImage"] is Entity)
entity = (Email)context.PostEntityImages["PostImage"].ToEntity<Email>();
else
throw new Exception("No PostEntityImages...");
}
else
throw new Exception("EmailPortalVisibilityPlugin Plugin invalid");
if(entity.LogicalName != "email")
throw new Exception("EmailPortalVisibilityPlugin invalid");
bool contactExists = false;
List<string> emails = new List<string>();
emails.AddRange(ParseAddressUsed(entity.To, trace));
emails.AddRange(ParseAddressUsed(entity.From, trace));
emails.AddRange(ParseAddressUsed(entity.Cc, trace));
foreach (String em in emails)
{
contactExists = LookupContact(em, service, trace);
if (contactExists)
break;
}
UpdateToggleState(entity, contactExists, service, trace);
}
catch (Exception ex)
{
throw new InvalidPluginExecutionException("Execute '" + ex.Message + "'");
}
}
public List<string> ParseAddressUsed(
IEnumerable<ActivityParty> entity, ITracingService trace)
{
try
{
List<string> addressStrings = new List<string>();
foreach (ActivityParty party in entity)
addressStrings.Add(party.PartyId.Id.ToString());
return addressStrings;
}
catch (FaultException<OrganizationServiceFault> exceptionServiceCall)
{
throw new Exception("ParseAddressUsed FaultException");
}
catch (Exception ex)
{
throw new Exception("ParseAddressUsed Exception");
}
}
public bool LookupContact(
String emailAddress, IOrganizationService service, ITracingService trace)
{
try
{
QueryByAttribute queryByAttribute = new QueryByAttribute("contact");
queryByAttribute.ColumnSet = new ColumnSet("contactId");
queryByAttribute.Attributes.Add("emailaddress1");
queryByAttribute.Values.Add(emailAddress);
EntityCollection retrieved = service.RetrieveMultiple(queryByAttribute);
return (retrieved.Entities.Count > 0);
}
catch (FaultException<OrganizationServiceFault> exceptionServiceCall)
{
throw new Exception("LookupContact Exception");
}
catch (Exception ex)
{
throw new Exception("LookupContact Exception");
}
}
public void UpdateToggleState(
Email entity, bool toggleState, IOrganizationService service, ITracingService trace)
{
try
{
Entity email = new Entity("email");
email.Id = entity.Id;
email.Attributes.Add("new_clientfacing", toggleState);
service.Update(email);
}
catch (FaultException<OrganizationServiceFault> exceptionServiceCall)
{
throw new Exception("UpdateToggleState Exception");
}
catch (Exception ex)
{
throw new Exception("UpdateToggleState Exception");
}
}
Try to set the first argument type of function ParseAddressUsed to EntityCollection instead of IEnumerable<ActivityParty>, and do the necessary changes.
And for the final update in function UpdateToggleState, there is no need to create a new email Entity (Entity email = new Entity("email");), when you already have the entity variable. You could just set the new_clientfacing attribute and update the entity, which is already retrieved.
In your method ParseAddressUsed you are adding the PartyId GUID to the string list and you use it in LookupContact in the emailaddress1 filter as a parameters, that is probably the reason why you are not retrieving any records.
Please try to change addressStrings.Add(party.PartyId.Id.ToString()) to addressStrings.Add(party.AddressUsed) instead and see if that works.
Cheers, dimamura
I want to send a message to my computer from my phone using TCP..My computer is the server and my phone is the client. I am able to send a message from my phone to my computer but in the output, I get null characters ..
I paste my codes below;;
Client ::
public void startApp() {
try {
// establish a socket connection with remote server
streamConnection =
(StreamConnection) Connector.open(connectString);
// create DataOuputStream on top of the socket connection
outputStream = streamConnection.openOutputStream();
dataOutputStream = new DataOutputStream(outputStream);
// send the HTTP request
dataOutputStream.writeChars("Hello");
dataOutputStream.flush();
// create DataInputStream on top of the socket connection
inputStream = streamConnection.openInputStream();
dataInputStream = new DataInputStream(inputStream);
// retrieve the contents of the requested page from Web server
String test="";
int inputChar;
System.out.println("Entering read...........");
while ( (inputChar = dataInputStream.read()) != -1) {
// test=test+((char)inputShar);
results.append((char) inputChar);
}
System.out.println("Leaving read...........");
// display the page contents on the phone screen
//System.out.println(" Result are "+results.toString());
System.out.println(" ");
resultField = new StringItem(null, results.toString());
System.out.println("Client says "+resultField);
resultScreen.append(resultField);
myDisplay.setCurrent(resultScreen);
} catch (IOException e) {
System.err.println("Exception caught:" + e);
} finally {
// free up I/O streams and close the socket connection
try {
if (dataInputStream != null)
dataInputStream.close();
} catch (Exception ignored) {}
try {
if (dataOutputStream != null)
dataOutputStream.close();
} catch (Exception ignored) {}
try {
if (outputStream != null)
outputStream.close();
} catch (Exception ignored) {}
try {
if (inputStream != null)
inputStream.close();
} catch (Exception ignored) {}
try {
if (streamConnection != null)
streamConnection.close();
} catch (Exception ignored) {}
}
}
My server :
public class Main {
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
try{
ServerSocket sck=new ServerSocket(880);
Socket client=sck.accept();
InputStream inp= client.getInputStream();
int i;
OutputStream out=client.getOutputStream();
out.write("Testing ".getBytes());
System.out.println("Server has responded ");
String str="";
while((i=inp.read())!=-1){
str=str+((char) i);
System.out.println("USer says "+ str);
}
}
catch(Exception e){
System.out.println("Error "+e);
}
}
}
My output for the server ;;
Server has responded
USer says null H
User says null H null
User says null H null e
etc etc
I am not supposed to get this null character,why I am getting it??
Another thing, my server is writing to the stream but the client is not able to receive that,why is that?Do I need to use a separate thread for that?
Thanks in adv
I would guess that isn't your real code, and that your real code initialized str to null.