We Keep Coding

Hyperledger fabric endorsement policy error using Java SDK

I am working on golang version of fabcar smart contract while seeking to implement a Java-SDK API which enrolls an admin, registers a user and performs query-update value operations based on https://github.com/hyperledger/fabric-samples/tree/master/fabcar/java
I have successfully set up a 3 org-9 peers blockchain network, installed, instantiated and invoked chaincode on peers.
However, as i am working on implementing the relative API, i am only able to successfully query blockchain database, while getting a "Could not meet endorsement policy for chaincode mycc"
Please find below screenshot of relative error
Endorsement policy is "OR ('Org1MSP.member','Org2MSP.member', 'Org3MSP.member')".
Should registered user somehow get an Org1/Org2/Org3.member attribute? Any leads would be appreciated!

Like #Ikar Pohorský said, for me this got resolved after I used correct method name. Also, ensure that you delete 'wallet' folder in order to regenerate the user if your HLF n/w was recreated.
#Test
public void testMyMethodToBeInvoked() throws Exception {
deleteDirectory(".\\wallet");
EnrollAdmin.main(null);
RegisterUser.main(null);
// Load a file system based wallet for managing identities.
final Path walletPath = Paths.get("wallet");
final Wallet wallet = Wallet.createFileSystemWallet(walletPath);
// load a CCP
final Path networkConfigPath = Paths
.get("C:\\sw\\hlf146-2\\fabric-samples\\first-network\\connection-org1.yaml");
final Gateway.Builder builder = Gateway.createBuilder();
builder.identity(wallet, "user1").networkConfig(networkConfigPath).discovery(true);
// create a gateway connection
try (Gateway gateway = builder.connect()) {
final Network network = gateway.getNetwork("mychannel");
final Contract contract = network.getContract("mycc");
String myJSONString="{\"a\":\"b\"}";
byte[] result;
// Following did NOT work. Control goes directly to 'invoke' when 'submitTransaction' is done directly. 'invoke' need not be mentioned here.
// result = contract.submitTransaction("invoke", myJSONString);
// Following DID work. In chaincode (my chain code was Java) I had a method named 'myMethodToBeInvoked'. The chain code was written similar to https://github.com/hyperledger/fabric-samples/blob/release-1.4/chaincode/chaincode_example02/java/src/main/java/org/hyperledger/fabric/example/SimpleChaincode.java
result = contract.submitTransaction("myMethodToBeInvoked", my);
System.out.println(new String(result));
}
}
EDIT: Also, please remember that if your chaincode throws errorResponse, even then we can have this endorsement fail issue. So, check if your chain code is working without any issues.

Run out of ports calling my webservice from an android app

I have an android app and a C# web service
I am hosting my web service on IIS Express - nothing fancy just set up the directories.
My android app go to the web service gets the data and then displays it on the screen and repeats this as fast as it can go.
After a while my android app will throw the following exception:
"SoapFault - faultcode: 'soap:Server' faultstring: 'Server was unable to process request. ---> No ports available in the range 10101 to 11100' faultactor: 'null' detail: org.kxml2.kdom.Node#41bdf340"
I have Googled around a bit and have not found anything that will help me.
I ran CurrPorts to watch the ports and it looks like every time the app calls the web service it is using a different port.
They all use port 80 but different remote ports.
The exception is being thrown on the following line of code
"SoapPrimitive response = (SoapPrimitive) _envelope.getResponse();"
If I run IISReset the app will go back to getting data again until sometime thereafter to get the exception mentioned above.
Here is the code for my web service which is just returning a comma separated string (it will do something more interesting just trying to get this working)
Web service code
[WebMethod]
public string GetDefaultResults()
{
return "100,1,0,125.987,124.993,117.904,116.038";
}
Here is the code that my android app uses to call the web service.
I create a new thread and have it call this method then get the string value split it on ',' then put it in a few different TextViews
public class WebService implements Runnable{
private static String NAMESPACE = "http://tempuri.org/";
private static String URL = "http://mymachine/mywebservice/service.asmx";
private static String SOAP_ACTION = "http://tempuri.org/";
private String _soapAndMethod;
private HttpTransportSE _androidHttpTransport;
private SoapSerializationEnvelope _envelope;
private String _methodName;
public WebService(String methodName) {
_methodName = methodName;
_soapAndMethod = SOAP_ACTION + _methodName;
SoapObject request = new SoapObject(NAMESPACE, methodName);
_envelope = new SoapSerializationEnvelope(SoapEnvelope.VER11);
_envelope.dotNet = true;
_envelope.setOutputSoapObject(request);
_androidHttpTransport = new HttpTransportSE(URL);
}
#Override
public void run() {
android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_BACKGROUND);
}
public String InvokeWebService() {
String resTxt = null;
try {
_androidHttpTransport.call(_soapAndMethod, _envelope);
SoapPrimitive response = (SoapPrimitive) _envelope.getResponse();
resTxt = response.toString();
} catch (Exception e){
e.printStackTrace();
}
return resTxt;
}
}
Any help would be great. Thank you to those who do respond. Is there some setting in IIS I need to change? Is there something I missed in my code?
Additional information:
When the server is responding the webservice request IIS creates a process called w3wp.exe and it this process that is running out of ports.
Doing in a little digging and experimentation the Webservice gets newed up each call to "GetDefaultResults". Which leaves w3wp.exe in a Listening state and they never go away until the iisreset is run.
Some time later it uses the remaining ports available and starts throwing that exception.
Why is it not reusing the same webservice instead of creating a new one each time.
If that is not possible what code do I write in the Webservice to close the connection after it is finished. I put in a hack to cause it close after 5 seconds to see if that would work at least.
It does clean up w3wp.exe but after a short time I start getting this exception on the client.
"expected: START_TAG {http://schemas.xmlsoap.org/soap/envelope/}Envelope (position:START_TAG #2:7 in java.io.InputStreamReader#41beb098) "
so this is not a work around but it helped me understand what the problem is a little better.
protected override void Dispose(bool disposing)
{
System.Timers.Timer timer = new System.Timers.Timer();
timer.Interval = 5000;
timer.Elapsed += timer_Elapsed;
timer.Start();
base.Dispose(disposing);
}
void timer_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
{
Environment.Exit(1);
}
Thanks for your help.

If you failed your first request, you might need to enable IIS Express to allow external connections. In your case, it looks like it only failed after running for a while.
In your question, I see that you
"go to the web service gets the data and then displays it on the screen and repeats this as fast as it can go.
did not call "close" on HttpTransportSE
You might be running out of local ports. Are you reusing the connection on all your requests? If not, try to close it when you are done.

My Webservice was referencing an api to get the values from then pass them over a webservice to the android app.
The problem was that every time the webservice was being called a new reference would be created to the api and after the request was sent it would never close out the port. As soon as I stopped referencing the api everything worked.
A cludge to get this to work is I had the webservice monitor a folder and send the data in the file that was last created. Then created another program to attach to the api and output the data to that folder. Not the most elegant solution but it works as a proof of concept for what I am doing.
Still not entirely sure why the Webservice was never closing the port and I am suspect that the Webservice could not dispose of the reference to the api but I am not really sure.

Dynamic BlazeDS endpoint configuration

I search for some help creating a web Flex application using BlazeDS and Java server with dynamic BlazeDS endpoint configuration.
First, I will try to explain my current situation.
I have a Flex 3.2 application that provides GUI of the application. From the ActionScript I call Java methods using BlazeDS. To access the BlazeDS I use a Config class that provides the endpoint as shown below (it is a constructor):
public function Config(): void {
if (_serviceUrl == null) {
try {
var browser: IBrowserManager = BrowserManager.getInstance();
browser.init();
var url: String = browser.url;
var host: String = mx.utils.URLUtil.getServerName(url);
var port: uint = mx.utils.URLUtil.getPort(url);
var parts: Array = url.split('/');
if (parts[2] == '') {
url = DEFAULT_URL;
Alert.show("Unable to determine server location, using default URL: " + DEFAULT_URL, "Connection error");
}
else {
url = parts[0] + '//' + parts[2] + '/' + parts[3] + '/messagebroker/amf';
}
_serviceUrl = url;
} catch (e: Error) {
Alert.show("Exception while trying to determine server location, using default URL: " + DEFAULT_URL, "Connection exception");
_serviceUrl = DEFAULT_URL;
}
}
}
The idea of the class is to determine the endpoint from the request URL. I use a Delegate class to call the remote methods using BlazeDS like the following:
{
import com.adobe.cairngorm.business.ServiceLocator;
import mx.rpc.IResponder;
import mx.rpc.remoting.RemoteObject;
public class AbstractRemoteDelegate
{
public function AbstractRemoteDelegate(responder:IResponder,serviceName:String)
{
_responder=responder;
_locator=ServiceLocator.getInstance();
_service=_locator.getRemoteObject(serviceName);
_service.showBusyCursor=true;
_service.endpoint = Config.instance.serviceUrl;
}
private var _responder:IResponder;
private var _locator:ServiceLocator;
private var _service:RemoteObject;
protected function send(operationName:String,... args:Array) : void {
_service.getOperation(operationName).send.apply(_service.getOperation(operationName),args).addResponder(_responder);
}
}
}
This approach actually works fine. However, I got across a situation where I can't use dynamically determined URL. In such a situation, I need a hard-coded URL in the Config.as file. And this is the problem. When trying to deploy the application to another server, I always need to rebuild the application with a new URL configuration in the ActionScript class Config.
Therefore I search for a way to define a static configuration for the Flex application to connect to a BlazeDS server. And the way to change such configuration without rebuilding the application so I can give the customer his own way to reconfigure and move the Flex application.
I thought about using a configuration file, but Flex runs on the client side and there is no configuration file!
I thought about using database configuration, but I don't have any database on the client side!
To sum up, I am looking for a way, how to get BlazeDS URL from a configuration to be able to change it without rebuilding the whole app.
Thanks for any useful suggestions.
EDIT: Revised the question to be more actual. I improved the way to determine the URL dynamically from the request URL, so it works now even for proxy server. However, my curiosity persists for the configuration of flex without rebuilding.

Here is an old example Blaze DS Service of mine which does basically the same as you did. It's just the string which needs to be created correctly. If the endpoint address is wrong, catch the error accordingly.
My project may currently not build because of Flexmojos ... I'm not able to test that yet.
Since it did not read you question properly, I misunderstood you: You can put a configuration file next to the SWF and load it via URLLoader or pass it via FlashVars. That should give you the freedom to pass the endpoint dynamically.

Scope not allowed when calling API Method from API Explorer

I have a strange behaviour in Google App Engine. I am developing with Eclipse and Java, specifically with Google Cloud Endpoints. I created a sample API with the following settings. Actually I was working with many others scopes but I decided to try with only one to track down the error.
#Api(
name = "adminmanagement",
version = "v1",
scopes = {AdminManagement.EMAIL_SCOPE},
clientIds = {AdminManagement.WEB_CLIENT_ID, AdminManagement.API_EXPLORER_CLIENT_ID}
)
public static final String EMAIL_SCOPE = "https://www.googleapis.com/auth/userinfo.email";
public static final String WEB_CLIENT_ID = "***.apps.googleusercontent.com";
public static final String API_EXPLORER_CLIENT_ID = com.google.api.server.spi.Constant.API_EXPLORER_CLIENT_ID;
In the API Method as usual I check if the user object is null.
if (user == null) {
throw new OAuthRequestException("Unauthorised Access!");
}
This is pretty much straight forward and it always worked. However this time it does not. If I try to call the API method through the API Explorer I get the following error:
401 Unauthorized
And through the Eclipse Console I can see the following one:
INFO: getCurrentUser: AccessToken; scope not allowed
The SDK version is 1.9.1 but atm I have another application wich uses Drive API and works. I tryed deleting and creating a new Cloud Console, deleting and creating a new App Engine application but I always get this error. By the way, if I deploy the application on App Engine I get a 500 Internal Error with no specification and NOTHING shows up in the logs. Just the API call with no errors whatsover.
This is driving me crazy, what am I missing?
EDIT: The bug DOES NOT occur in version 1.8.9 and below...

The problem magically resolved itself, I haven't changed a thing, however I wasn't the only one with this problem so I supposed Google must have fixed something.

How to configure a Two-legged Spring-OAuth provider/client?

Im working on oauth 1 Sparklr and Tonr sample apps and I'm trying to create a two-legged call. Hipoteticly the only thing you're supposed to do is change the Consumer Details Service from (Im ommiting the igoogle consumer info to simplify):
<oauth:consumer-details-service id="consumerDetails">
<oauth:consumer name="Tonr.com" key="tonr-consumer-key" secret="SHHHHH!!!!!!!!!!"
resourceName="Your Photos" resourceDescription="Your photos that you have uploaded to sparklr.com."/>
</oauth:consumer-details-service>
to:
<oauth:consumer-details-service id="consumerDetails">
<oauth:consumer name="Tonr.com" key="tonr-consumer-key" secret="SHHHHH!!!!!!!!!!"
resourceName="Your Photos" resourceDescription="Your photos that you have uploaded to sparklr.com."
requiredToObtainAuthenticatedToken="false" authorities="ROLE_CONSUMER"/>
</oauth:consumer-details-service>
That's adding requiredToObtainAuthenticatedToken and authorities which will cause the consumer to be trusted and therefore all the validation process is skipped.
However I still get the login and confirmation screen from the Sparklr app. The current state of the official documentation is pretty precarious considering that the project is being absorbed by Spring so its filled up with broken links and ambiguous instructions. As far as I've understood, no changes are required on the client code so I'm basically running out of ideas. I have found people actually claiming that Spring-Oauth clients doesn't support 2-legged access (which I found hard to believe)
The only way I have found to do it was by creating my own ConsumerSupport:
private OAuthConsumerSupport createConsumerSupport() {
CoreOAuthConsumerSupport consumerSupport = new CoreOAuthConsumerSupport();
consumerSupport.setStreamHandlerFactory(new DefaultOAuthURLStreamHandlerFactory());
consumerSupport.setProtectedResourceDetailsService(new ProtectedResourceDetailsService() {
public ProtectedResourceDetails loadProtectedResourceDetailsById(
String id) throws IllegalArgumentException {
SignatureSecret secret = new SharedConsumerSecret(
CONSUMER_SECRET);
BaseProtectedResourceDetails result = new BaseProtectedResourceDetails();
result.setConsumerKey(CONSUMER_KEY);
result.setSharedSecret(secret);
result.setSignatureMethod(SIGNATURE_METHOD);
result.setUse10a(true);
result.setRequestTokenURL(SERVER_URL_OAUTH_REQUEST);
result.setAccessTokenURL(SERVER_URL_OAUTH_ACCESS);
return result;
}
});
return consumerSupport;
}
and then reading the protected resource:
consumerSupport.readProtectedResource(url, accessToken, "GET");
Has someone actually managed to make this work without boiler-plate code?