I have two servers - HelloServer and WorldServer.
Both implement the same proto file:
// The greeting service definition.
service GreeterService {
// Sends a greeting
rpc GreetWithHelloOrWorld (GreeterRequest) returns (GreeterReply) {}
rpc GreetWithHelloWorld (GreeterRequest) returns (GreeterReply) {}
}
message GreeterRequest {
string id = 1;
}
// The response message containing the greetings
message GreeterReply {
string message = 1;
string id = 2;
}
I want to add traceIds to the requests. As far as I understand, this is achieved through adding the traceId in the Metadata object.
Here is the test I am using to check that the traceIds are passed along. The request is made to the HelloServer which in turns calls the WorldServer and then finally returns the response.
#Test
public void greetHelloWorld() {
String traceId = UUID.randomUUID().toString();
Metadata metadata = new Metadata();
metadata.put(MetadataKeys.TRACE_ID_METADATA_KEY, traceId);
Greeter.GreeterRequest greeterRequest = Greeter.GreeterRequest.newBuilder().setId(traceId).build();
ManagedChannel channel = ManagedChannelBuilder
.forAddress("localhost", 8080)
.usePlaintext(true)
.build();
AtomicReference<Metadata> trailersCapture = new AtomicReference<>();
AtomicReference<Metadata> headersCapture = new AtomicReference<>();
ClientInterceptor clientInterceptor = MetadataUtils.newAttachHeadersInterceptor(metadata);
ClientInterceptor metadataCapturingClientInterceptor = MetadataUtils.newCaptureMetadataInterceptor(headersCapture, trailersCapture);
GreeterServiceBlockingStub blockingStub = GreeterServiceGrpc.newBlockingStub(ClientInterceptors.intercept(channel, clientInterceptor, metadataCapturingClientInterceptor));
GreeterServiceStub asyncStub = GreeterServiceGrpc.newStub(channel);
try {
Greeter.GreeterReply greeterReply = blockingStub.greetWithHelloWorld(greeterRequest);
String idInResponse = greeterReply.getId();
String idInHeaders = headersCapture.get().get(MetadataKeys.TRACE_ID_METADATA_KEY);
logger.info("Response from HelloService and WorldService -- , id = {}, headers = {}", greeterReply.getMessage(), idInResponse, idInHeaders);
assertEquals("Ids in response and header did not match", idInResponse, idInHeaders);
} catch (StatusRuntimeException e) {
logger.warn("Exception when calling HelloService and WorldService\n" + e);
fail();
} finally {
channel.shutdown();
}
}
Implementation of ServerInterceptor:
#Override
public <ReqT, RespT> ServerCall.Listener<ReqT> interceptCall(ServerCall<ReqT, RespT> call, Metadata headers, ServerCallHandler<ReqT, RespT> next) {
String traceId = headers.get(MetadataKeys.TRACE_ID_METADATA_KEY);
logger.info("objId=" + this.toString().substring(this.toString().lastIndexOf('#')) + " Trace id -- 1=" + headers.get(MetadataKeys.TRACE_ID_METADATA_KEY));
return next.startCall(new ForwardingServerCall.SimpleForwardingServerCall<ReqT, RespT>(call) {
#Override
public void sendHeaders(Metadata headers) {
headers.put(MetadataKeys.TRACE_ID_METADATA_KEY, traceId);
logger.info("objId=" + this.toString().substring(this.toString().lastIndexOf('#')) + " Trace id -- 2 " + headers.get(MetadataKeys.TRACE_ID_METADATA_KEY));
super.sendHeaders(headers);
}
#Override
public void sendMessage(RespT message) {
logger.info("objId=" + this.toString().substring(this.toString().lastIndexOf('#')) + " message=" + message.toString());
super.sendMessage(message);
}
}, headers);
Here is the implementation of the greetWithHelloWorld() method:
public void greetWithHelloWorld(com.comcast.manitoba.world.hello.Greeter.GreeterRequest request,
io.grpc.stub.StreamObserver<com.comcast.manitoba.world.hello.Greeter.GreeterReply> responseObserver) {
Greeter.GreeterRequest greeterRequest = Greeter.GreeterRequest.newBuilder().setId(request.getId()).build();
Metadata metadata = new Metadata();
metadata.put(MetadataKeys.TRACE_ID_METADATA_KEY, "");
ManagedChannel channel = ManagedChannelBuilder.forAddress("localhost", 8081)
.usePlaintext(true).build();
AtomicReference<Metadata> trailersCapture = new AtomicReference<>();
AtomicReference<Metadata> headersCapture = new AtomicReference<>();
ClientInterceptor clientInterceptor = MetadataUtils.newAttachHeadersInterceptor(metadata);
ClientInterceptor metadataCapturingClientInterceptor = MetadataUtils.newCaptureMetadataInterceptor(headersCapture, trailersCapture);
GreeterServiceGrpc.GreeterServiceBlockingStub blockingStub = GreeterServiceGrpc.newBlockingStub(ClientInterceptors.intercept(channel, clientInterceptor, metadataCapturingClientInterceptor));
String messageFromWorldService = "";
String replyIdFromWorldService = "";
try {
Greeter.GreeterReply greeterReply = blockingStub.greetWithHelloOrWorld(greeterRequest);
messageFromWorldService = greeterReply.getMessage();
replyIdFromWorldService = greeterReply.getId();
logger.info("Response from WorldService -- {}, id = {}", messageFromWorldService, replyIdFromWorldService);
} catch (StatusRuntimeException e) {
logger.warn("Exception when calling HelloService\n" + e);
}
Greeter.GreeterReply greeterReply = Greeter.GreeterReply.newBuilder().setMessage("Hello" + messageFromWorldService).setId(replyIdFromWorldService).build();
responseObserver.onNext(greeterReply);
responseObserver.onCompleted();
}
The problem is in the greetWithHelloWorld() method, I don't have access to Metadata, so I cannot extract the traceId from the header and attach it to the request to the World server. However, if I put a breakpoint in that method, I can see that request object does have the traceId in it which is private to it and unaccessible.
Any ideas how can I achieve this? Also, is this the best way to do pass traceIds around? I found some references to using Context. What is the difference between Context and Metadata?
The expected approach is to use a ClientInterceptor and ServerInterceptor. The client interceptor would copy from Context into Metadata. The server interceptor would copy from Metadata to Context. Use Contexts.interceptCall in the server interceptor to apply the Context all callbacks.
Metadata is for wire-level propagation. Context is for in-process propagation. Generally the application should not need to interact directly with Metadata (in Java).
Related
Folks,
I am trying to move data to s3 from Salesforce using apex class. I have been told by the data manager to send the data in zip/gzip format to the S3 bucket for storage cost savings.
I have simply tried to do a request.setCompressed(true); as I've read it compresses the body before sending it to the endpoint. Code below:
HttpRequest request = new HttpRequest();
request.setEndpoint('callout:'+DATA_NAMED_CRED+'/'+URL+'/'+generateUniqueTimeStampforSuffix());
request.setMethod('PUT');
request.setBody(JSON.serialize(data));
request.setCompressed(true);
request.setHeader('Content-Type','application/json');
But no matter what I always receive this:
<Error><Code>XAmzContentSHA256Mismatch</Code><Message>The provided 'x-amz-content-sha256' header does not match what was computed.</Message><ClientComputedContentSHA256>fd31b2b9115ef77e8076b896cb336d21d8f66947210ffcc9c4d1971b2be3bbbc</ClientComputedContentSHA256><S3ComputedContentSHA256>1e7f2115e60132afed9e61132aa41c3224c6e305ad9f820e6893364d7257ab8d</S3ComputedContentSHA256>
I have tried multiple headers too, like setting the content type to gzip/zip, etc.
Any pointers in the right direction would be appreciated.
I had a good amount of headaches attempting to do a similar thing. I feel your pain.
The following code has worked for us using lambda functions; you can try modifying it and see what happens.
public class AwsApiGateway {
// Things we need to know about the service. Set these values in init()
String host, payloadSha256;
String resource;
String service = 'execute-api';
String region;
public Url endpoint;
String accessKey;
String stage;
string secretKey;
HttpMethod method = HttpMethod.XGET;
// Remember to set "payload" here if you need to specify a body
// payload = Blob.valueOf('some-text-i-want-to-send');
// This method helps prevent leaking secret key,
// as it is never serialized
// Url endpoint;
// HttpMethod method;
Blob payload;
// Not used externally, so we hide these values
Blob signingKey;
DateTime requestTime;
Map<String, String> queryParams = new map<string,string>(), headerParams = new map<string,string>();
void init(){
if (payload == null) payload = Blob.valueOf('');
requestTime = DateTime.now();
createSigningKey(secretKey);
}
public AwsApiGateway(String resource){
this.stage = AWS_LAMBDA_STAGE
this.resource = '/' + stage + '/' + resource;
this.region = AWS_REGION;
this.endpoint = new Url(AWS_ENDPOINT);
this.accessKey = AWS_ACCESS_KEY;
this.secretKey = AWS_SECRET_KEY;
}
// Make sure we can't misspell methods
public enum HttpMethod { XGET, XPUT, XHEAD, XOPTIONS, XDELETE, XPOST }
public void setMethod (HttpMethod method){
this.method = method;
}
public void setPayload (string payload){
this.payload = Blob.valueOf(payload);
}
// Add a header
public void setHeader(String key, String value) {
headerParams.put(key.toLowerCase(), value);
}
// Add a query param
public void setQueryParam(String key, String value) {
queryParams.put(key.toLowerCase(), uriEncode(value));
}
// Create a canonical query string (used during signing)
String createCanonicalQueryString() {
String[] results = new String[0], keys = new List<String>(queryParams.keySet());
keys.sort();
for(String key: keys) {
results.add(key+'='+queryParams.get(key));
}
return String.join(results, '&');
}
// Create the canonical headers (used for signing)
String createCanonicalHeaders(String[] keys) {
keys.addAll(headerParams.keySet());
keys.sort();
String[] results = new String[0];
for(String key: keys) {
results.add(key+':'+headerParams.get(key));
}
return String.join(results, '\n')+'\n';
}
// Create the entire canonical request
String createCanonicalRequest(String[] headerKeys) {
return String.join(
new String[] {
method.name().removeStart('X'), // METHOD
new Url(endPoint, resource).getPath(), // RESOURCE
createCanonicalQueryString(), // CANONICAL QUERY STRING
createCanonicalHeaders(headerKeys), // CANONICAL HEADERS
String.join(headerKeys, ';'), // SIGNED HEADERS
payloadSha256 // SHA256 PAYLOAD
},
'\n'
);
}
// We have to replace ~ and " " correctly, or we'll break AWS on those two characters
string uriEncode(String value) {
return value==null? null: EncodingUtil.urlEncode(value, 'utf-8').replaceAll('%7E','~').replaceAll('\\+','%20');
}
// Create the entire string to sign
String createStringToSign(String[] signedHeaders) {
String result = createCanonicalRequest(signedHeaders);
return String.join(
new String[] {
'AWS4-HMAC-SHA256',
headerParams.get('date'),
String.join(new String[] { requestTime.formatGMT('yyyyMMdd'), region, service, 'aws4_request' },'/'),
EncodingUtil.convertToHex(Crypto.generateDigest('sha256', Blob.valueof(result)))
},
'\n'
);
}
// Create our signing key
void createSigningKey(String secretKey) {
signingKey = Crypto.generateMac('hmacSHA256', Blob.valueOf('aws4_request'),
Crypto.generateMac('hmacSHA256', Blob.valueOf(service),
Crypto.generateMac('hmacSHA256', Blob.valueOf(region),
Crypto.generateMac('hmacSHA256', Blob.valueOf(requestTime.formatGMT('yyyyMMdd')), Blob.valueOf('AWS4'+secretKey))
)
)
);
}
// Create all of the bits and pieces using all utility functions above
public HttpRequest createRequest() {
init();
payloadSha256 = EncodingUtil.convertToHex(Crypto.generateDigest('sha-256', payload));
setHeader('date', requestTime.formatGMT('yyyyMMdd\'T\'HHmmss\'Z\''));
if(host == null) {
host = endpoint.getHost();
}
setHeader('host', host);
HttpRequest request = new HttpRequest();
request.setMethod(method.name().removeStart('X'));
if(payload.size() > 0) {
setHeader('Content-Length', String.valueOf(payload.size()));
request.setBodyAsBlob(payload);
}
String finalEndpoint = new Url(endpoint, resource).toExternalForm(),
queryString = createCanonicalQueryString();
if(queryString != '') {
finalEndpoint += '?'+queryString;
}
request.setEndpoint(finalEndpoint);
for(String key: headerParams.keySet()) {
request.setHeader(key, headerParams.get(key));
}
String[] headerKeys = new String[0];
String stringToSign = createStringToSign(headerKeys);
request.setHeader(
'Authorization',
String.format(
'AWS4-HMAC-SHA256 Credential={0}, SignedHeaders={1},Signature={2}',
new String[] {
String.join(new String[] { accessKey, requestTime.formatGMT('yyyyMMdd'), region, service, 'aws4_request' },'/'),
String.join(headerKeys,';'), EncodingUtil.convertToHex(Crypto.generateMac('hmacSHA256', Blob.valueOf(stringToSign), signingKey))}
));
system.debug(json.serializePretty(request.getEndpoint()));
return request;
}
// Actually perform the request, and throw exception if response code is not valid
public HttpResponse sendRequest(Set<Integer> validCodes) {
HttpResponse response = new Http().send(createRequest());
if(!validCodes.contains(response.getStatusCode())) {
system.debug(json.deserializeUntyped(response.getBody()));
}
return response;
}
// Same as above, but assume that only 200 is valid
// This method exists because most of the time, 200 is what we expect
public HttpResponse sendRequest() {
return sendRequest(new Set<Integer> { 200 });
}
// TEST METHODS
public static string getEndpoint(string attribute){
AwsApiGateway api = new AwsApiGateway(attribute);
return api.createRequest().getEndpoint();
}
public static string getEndpoint(string attribute, map<string, string> params){
AwsApiGateway api = new AwsApiGateway(attribute);
for (string key: params.keySet()){
api.setQueryParam(key, params.get(key));
}
return api.createRequest().getEndpoint();
}
public class EndpointConfig {
string resource;
string attribute;
list<object> items;
map<string,string> params;
public EndpointConfig(string resource, string attribute, list<object> items){
this.items = items;
this.resource = resource;
this.attribute = attribute;
}
public EndpointConfig setQueryParams(map<string,string> parameters){
params = parameters;
return this;
}
public string endpoint(){
if (params == null){
return getEndpoint(resource);
} else return getEndpoint(resource + '/' + attribute, params);
}
public SingleRequestMock mockResponse(){
return new SingleRequestMock(200, 'OK', json.serialize(items), null);
}
}
}
I'm using Asp.Net Core as a Rest Api Service.
I need access to request and response in ActionFilter. Actually, I found the request in OnActionExcecuted but I can't read the response result.
I'm trying to return value as follow:
[HttpGet]
[ProducesResponseType(typeof(ResponseType), (int)HttpStatusCode.OK)]
[Route("[action]")]
public async Task<IActionResult> Get(CancellationToken cancellationToken)
{
var model = await _responseServices.Get(cancellationToken);
return Ok(model);
}
And in ActionFilter OnExcecuted method as follow:
_request = context.HttpContext.Request.ReadAsString().Result;
_response = context.HttpContext.Response.ReadAsString().Result; //?
I'm trying to get the response in ReadAsString as an Extension method as follow:
public static async Task<string> ReadAsString(this HttpResponse response)
{
var initialBody = response.Body;
var buffer = new byte[Convert.ToInt32(response.ContentLength)];
await response.Body.ReadAsync(buffer, 0, buffer.Length);
var body = Encoding.UTF8.GetString(buffer);
response.Body = initialBody;
return body;
}
But, there is no result!
How I can get the response in OnActionExcecuted?
Thanks, everyone for taking the time to try and help explain
If you're logging for json result/ view result , you don't need to read the whole response stream. Simply serialize the context.Result:
public class MyFilterAttribute : ActionFilterAttribute
{
private ILogger<MyFilterAttribute> logger;
public MyFilterAttribute(ILogger<MyFilterAttribute> logger){
this.logger = logger;
}
public override void OnActionExecuted(ActionExecutedContext context)
{
var result = context.Result;
if (result is JsonResult json)
{
var x = json.Value;
var status = json.StatusCode;
this.logger.LogInformation(JsonConvert.SerializeObject(x));
}
if(result is ViewResult view){
// I think it's better to log ViewData instead of the finally rendered template string
var status = view.StatusCode;
var x = view.ViewData;
var name = view.ViewName;
this.logger.LogInformation(JsonConvert.SerializeObject(x));
}
else{
this.logger.LogInformation("...");
}
}
I know there is already an answer but I want to also add that the problem is the MVC pipeline has not populated the Response.Body when running an ActionFilter so you cannot access it. The Response.Body is populated by the MVC middleware.
If you want to read Response.Body then you need to create your own custom middleware to intercept the call when the Response object has been populated. There are numerous websites that can show you how to do this. One example is here.
As discussed in the other answer, if you want to do it in an ActionFilter you can use the context.Result to access the information.
For logging whole request and response in the ASP.NET Core filter pipeline you can use Result filter attribute
public class LogRequestResponseAttribute : TypeFilterAttribute
{
public LogRequestResponseAttribute() : base(typeof(LogRequestResponseImplementation)) { }
private class LogRequestResponseImplementation : IAsyncResultFilter
{
public async Task OnResultExecutionAsync(ResultExecutingContext context, ResultExecutionDelegate next)
{
var requestHeadersText = CommonLoggingTools.SerializeHeaders(context.HttpContext.Request.Headers);
Log.Information("requestHeaders: " + requestHeadersText);
var requestBodyText = await CommonLoggingTools.FormatRequestBody(context.HttpContext.Request);
Log.Information("requestBody: " + requestBodyText);
await next();
var responseHeadersText = CommonLoggingTools.SerializeHeaders(context.HttpContext.Response.Headers);
Log.Information("responseHeaders: " + responseHeadersText);
var responseBodyText = await CommonLoggingTools.FormatResponseBody(context.HttpContext.Response);
Log.Information("responseBody: " + responseBodyText);
}
}
}
In Startup.cs add
app.UseMiddleware<ResponseRewindMiddleware>();
services.AddScoped<LogRequestResponseAttribute>();
Somewhere add static class
public static class CommonLoggingTools
{
public static async Task<string> FormatRequestBody(HttpRequest request)
{
//This line allows us to set the reader for the request back at the beginning of its stream.
request.EnableRewind();
//We now need to read the request stream. First, we create a new byte[] with the same length as the request stream...
var buffer = new byte[Convert.ToInt32(request.ContentLength)];
//...Then we copy the entire request stream into the new buffer.
await request.Body.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false);
//We convert the byte[] into a string using UTF8 encoding...
var bodyAsText = Encoding.UTF8.GetString(buffer);
//..and finally, assign the read body back to the request body, which is allowed because of EnableRewind()
request.Body.Position = 0;
return $"{request.Scheme} {request.Host}{request.Path} {request.QueryString} {bodyAsText}";
}
public static async Task<string> FormatResponseBody(HttpResponse response)
{
//We need to read the response stream from the beginning...
response.Body.Seek(0, SeekOrigin.Begin);
//...and copy it into a string
string text = await new StreamReader(response.Body).ReadToEndAsync();
//We need to reset the reader for the response so that the client can read it.
response.Body.Seek(0, SeekOrigin.Begin);
response.Body.Position = 0;
//Return the string for the response, including the status code (e.g. 200, 404, 401, etc.)
return $"{response.StatusCode}: {text}";
}
public static string SerializeHeaders(IHeaderDictionary headers)
{
var dict = new Dictionary<string, string>();
foreach (var item in headers.ToList())
{
//if (item.Value != null)
//{
var header = string.Empty;
foreach (var value in item.Value)
{
header += value + " ";
}
// Trim the trailing space and add item to the dictionary
header = header.TrimEnd(" ".ToCharArray());
dict.Add(item.Key, header);
//}
}
return JsonConvert.SerializeObject(dict, Formatting.Indented);
}
}
public class ResponseRewindMiddleware {
private readonly RequestDelegate next;
public ResponseRewindMiddleware(RequestDelegate next) {
this.next = next;
}
public async Task Invoke(HttpContext context) {
Stream originalBody = context.Response.Body;
try {
using (var memStream = new MemoryStream()) {
context.Response.Body = memStream;
await next(context);
//memStream.Position = 0;
//string responseBody = new StreamReader(memStream).ReadToEnd();
memStream.Position = 0;
await memStream.CopyToAsync(originalBody);
}
} finally {
context.Response.Body = originalBody;
}
}
You can also do...
string response = "Hello";
if (result is ObjectResult objectResult)
{
var status = objectResult.StatusCode;
var value = objectResult.Value;
var stringResult = objectResult.ToString();
responce = (JsonConvert.SerializeObject(value));
}
I used this in a .net core app.
Hope it helps.
I'm using Alfresco 5.1 Community, and i'm trying to get a property value of a current person logged for example, in the user I have:
"{http://www.someco.org/model/people/1.0}customProperty"
How can I obtain this in java?
Is a custom property, so, in http://localhost:8080/alfresco/service/api/people it does not appear. How can I do this?
I try this to obtain at least nodeRef:
protected ServiceRegistry getServiceRegistry() {
ProcessEngineConfigurationImpl config = Context.getProcessEngineConfiguration();
if (config != null) {
// Fetch the registry that is injected in the activiti spring-configuration
ServiceRegistry registry = (ServiceRegistry) config.getBeans().get(ActivitiConstants.SERVICE_REGISTRY_BEAN_KEY);
if (registry == null) {
throw new RuntimeException("Service-registry not present in ProcessEngineConfiguration beans, expected ServiceRegistry with key" + ActivitiConstants.SERVICE_REGISTRY_BEAN_KEY);
}
return registry;
}
throw new IllegalStateException("No ProcessEngineConfiguration found in active context");
}
public void writeToCatalina() {
PersonService personService = getServiceRegistry().getPersonService();
System.out.println("test");
String name = AuthenticationUtil.getFullyAuthenticatedUser();
System.out.println(name);
NodeRef personRef = personService.getPerson(name);
System.out.println(personRef);
}
But I got:
No ProcessEngineConfiguration found in active context
Help me !
You can query Alfresco using CMIS and call the API:
GET /alfresco/service/api/people/{userName}.
For first you can define the method to create the session CmisSession:
public Session getCmisSession() {
logger.debug("Starting: getCmisSession()");
// default factory implementation
SessionFactory factory = SessionFactoryImpl.newInstance();
Map<String, String> parameter = new HashMap<String, String>();
// connection settings
parameter.put(SessionParameter.ATOMPUB_URL, url + ATOMPUB_URL);
parameter.put(SessionParameter.BINDING_TYPE, BindingType.ATOMPUB.value());
parameter.put(SessionParameter.AUTH_HTTP_BASIC, "true");
parameter.put(SessionParameter.USER, username);
parameter.put(SessionParameter.PASSWORD, password);
parameter.put(SessionParameter.OBJECT_FACTORY_CLASS, "org.alfresco.cmis.client.impl.AlfrescoObjectFactoryImpl");
List<Repository> repositories = factory.getRepositories(parameter);
return repositories.get(0).createSession();
}
Then execute the query (this method returns more than one result, you probably need to change it):
public void doQuery(String cql, int maxItems) {
Session cmisSession = getCmisSession();
OperationContext oc = new OperationContextImpl();
oc.setMaxItemsPerPage(maxItems);
ItemIterable<QueryResult> results = cmisSession.query(cql, false, oc);
for (QueryResult result : results) {
for (PropertyData<?> prop : result.getProperties()) {
logger.debug(prop.getQueryName() + ": " + prop.getFirstValue());
}
}
}
If you need to get the token, use this:
public String getAuthenticationTicket() {
try {
logger.info("ALFRESCO: Starting connection...");
RestTemplate restTemplate = new RestTemplate();
Map<String, String> params = new HashMap<String, String>();
params.put("user", username);
params.put("password", password);
Source result = restTemplate.getForObject(url + AFMConstants.URL_LOGIN_PARAM, Source.class, params);
logger.info("ALFRESCO: CONNECTED!");
XPathOperations xpath = new Jaxp13XPathTemplate();
return xpath.evaluateAsString("//ticket", result);
}
catch (RestClientException ex) {
logger.error("FATAL ERROR - Alfresco Authentication failed - getAuthenticationTicket() - " + ex );
return null;
}
catch (Exception ex) {
logger.error("FATAL ERROR - Alfresco Authentication failed - getAuthenticationTicket() - " + ex );
return null;
}
}
You need to obtain your user noderef using this API then access its properties this way!
Edit : You need to inject service registry on your bean!
String name = AuthenticationUtil.getFullyAuthenticatedUser()
You can use this. Let me know if it works.
This will give you current logged in user name and detail.
String name = AuthenticationUtil.getFullyAuthenticatedUser();
System.out.println("Current user:"+name);
PersonService personService=serviceRegistry.getPersonService();
NodeRef node=personService.getPerson(name);
NodeService nodeService=serviceRegistry.getNodeService();
Map<QName, Serializable> props=nodeService.getProperties(node);
for (Entry<QName, Serializable> entry : props.entrySet())
{
System.out.println(entry.getKey() + "/" + entry.getValue());
}
I have java SE sample client which run on desktop (code below). But I have access to WebSphere were called EJB is deployed. How to rewrite below code to work on WebSphere? (When I leave this code just like it is program works but I think this can be done more simple and clear)
Main method:
WSConn connection = new WSConn();
final Plan plan = connection.getPlanBean();
com.ibm.websphere.security.auth.WSSubject.doAs(connection.getSubject(), new java.security.PrivilegedAction<Object>() {
public Object run() {
try {
// App logic
} catch (Throwable t) {
System.err.println("PrivilegedAction - Error calling EJB: " + t);
t.printStackTrace();
}
return null;
}
}); // end doAs
WSConn class:
public class WSConn {
private static final String INITIAL_CONTEXT_FACTORY = "com.ibm.websphere.naming.WsnInitialContextFactory";
private static final String JAAS_MODULE = "WSLogin";
private static final String MODEL_EJB_NAME_LONG = "ejb/com/ibm/ModelHome";
private static final String PLAN_EJB_NAME_LONG = "ejb/com/ibm/PlanHome";
private Subject subject;
private InitialContext initialContext;
private String serverName;
private String serverPort;
private String uid;
private String pwd;
private String remoteServerName;
private Model modelBean;
private Plan planBean;
public WSConn() {
Properties props = new Properties();
try {
props.load(WSConn.class.getClassLoader().getResourceAsStream("WSConn.properties"));
} catch (IOException e) {
e.printStackTrace();
}
serverName = props.getProperty("WSConn.serverName");
serverPort = props.getProperty("WSConn.serverPort");
uid = props.getProperty("WSConn.userID");
pwd = props.getProperty("WSConn.password");
remoteServerName = props.getProperty("WSConn.remoteServerName");
}
private void init() {
if (subject == null || initialContext == null) {
subject = login();
}
}
private Subject login() {
Subject subject = null;
try {
LoginContext lc = null;
// CRATE LOGIN CONTEXT
Hashtable<String, String> env = new Hashtable<String, String>();
env.put(Context.INITIAL_CONTEXT_FACTORY, INITIAL_CONTEXT_FACTORY);
env.put(Context.PROVIDER_URL, "corbaloc:iiop:" + serverName + ":" + serverPort);
initialContext = new InitialContext(env);
// Just to test the connection
initialContext.lookup("");
lc = new LoginContext(JAAS_MODULE, new WSCallbackHandlerImpl(uid, pwd));
lc.login();
subject = lc.getSubject();
} catch (javax.naming.NoPermissionException exc) {
System.err.println("[WSConn] - Login Error: " + exc);
} catch (Exception exc) {
System.err.println("[WSConn] - Error: " + exc);
}
return subject;
}
public wModel getModelBean() {
if (modelBean == null) {
init();
modelBean = (wModel) com.ibm.websphere.security.auth.WSSubject.doAs(subject,
new java.security.PrivilegedAction<wModel>() {
public wModel run() {
wModel session = null;
try {
Object o = initialContext.lookup(MODEL_EJB_NAME_LONG);
wModelHome home = (wModelHome) PortableRemoteObject.narrow(o, wModelHome.class);
if (home != null) {
session = home.create(remoteServerName);
}
} catch (Exception exc) {
System.err.println("Error getting model bean: " + exc);
}
return session;
}
}); // end doAs
}
return modelBean;
}
public wPlan getPlanBean() {
if (planBean == null) {
init();
planBean = (wPlan) com.ibm.websphere.security.auth.WSSubject.doAs(subject,
new java.security.PrivilegedAction<wPlan>() {
public wPlan run() {
wPlan session = null;
try {
Object o = initialContext.lookup(PLAN_EJB_NAME_LONG);
wPlanHome home = (wPlanHome) PortableRemoteObject.narrow(o, wPlanHome.class);
if (home != null) {
session = home.create(remoteServerName);
}
} catch (Exception exc) {
System.err.println("Error getting plan bean: " + exc);
}
return session;
}
}); // end doAs
}
return planBean;
}
public Subject getSubject() {
if (subject == null) {
init();
}
return subject;
}
}
As indicated in another answer, the classic mechanism is to lookup and narrow the home interface.
Get the initial context
final InitialContext initialContext = new InitialContext();
Lookup for the home by jndi name, specifying either the full jndi name
Object obj = initialContext.lookup("ejb/com/ibm/tws/conn/plan/ConnPlanHome");
or you can create e reference in your WAR and use java:comp/env/yourname
Then narrow the home to the home interface class
ConnPlanHome planHome = (ConnPlanHome)PortableRemoteObject.narrow(obj, ConnPlanHome.class);
and then create the EJB remote interface
ConnPlan plan = planHome.create();
The about calls should work for IBM Workload Scheduler distributed.
For IBM Workload Scheduler z/OS the JNDI name and the class names are different:
final InitialContext initialContext = new InitialContext();
String engineName = "XXXX";
Object obj = initialContext.lookup("ejb/com/ibm/tws/zconn/plan/ZConnPlanHome");
ZConnPlanHome planHome = (ZConnPlanHome)PortableRemoteObject.narrow(obj, ZConnPlanHome.class);
ZConnPlan plan = planHome.create(engineName);
User credentials are propagated from the client to the engine, the client need to be authenticated otherwise the engine will reject the request.
If you're trying to access an EJB from a POJO class, then there is nothing more simple than lookup+narrow. However, if the POJO is included in an application (EAR or WAR), then you could declare and lookup an EJB reference (java:comp/ejb/myEJB), and then the container would perform the narrow rather than your code. If you change your code to be a managed class like a servlet, another EJB, or a CDI bean, then you could use #EJB injection, and then you would not even need a lookup.
I have a requirement to pass a custom object using RESTTemplate to my REST service.
RestTemplate restTemplate = new RestTemplate();
MultiValueMap<String, Object> requestMap = new LinkedMultiValueMap<String, Object>();
...
requestMap.add("file1", new FileSystemResource(..);
requestMap.add("Content-Type","text/html");
requestMap.add("accept", "text/html");
requestMap.add("myobject",new CustomObject()); // This is not working
System.out.println("Before Posting Request........");
restTemplate.postForLocation(url, requestMap);//Posting the data.
System.out.println("Request has been executed........");
I'm not able to add my custom object to MultiValueMap. Request generation is getting failed.
Can someone helps me to find a way for this? I can simply pass a string object without problem.User defined objects makes the problem.
Appreciate any help !!!
You can do it fairly simply with Jackson.
Here is what I wrote for a Post of a simple POJO.
#XmlRootElement(name="newobject")
#JsonSerialize(include=JsonSerialize.Inclusion.NON_NULL)
public class NewObject{
private String stuff;
public String getStuff(){
return this.stuff;
}
public void setStuff(String stuff){
this.stuff = stuff;
}
}
....
//make the object
NewObject obj = new NewObject();
obj.setStuff("stuff");
//set your headers
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_JSON);
//set your entity to send
HttpEntity entity = new HttpEntity(obj,headers);
// send it!
ResponseEntity<String> out = restTemplate.exchange("url", HttpMethod.POST, entity
, String.class);
The link above should tell you how to set it up if needed. Its a pretty good tutorial.
To receive NewObject in RestController
#PostMapping("/create") public ResponseEntity<String> createNewObject(#RequestBody NewObject newObject) { // do your stuff}
you can try this
public int insertParametro(Parametros parametro) throws LlamadasWSBOException {
String metodo = "insertParam";
String URL_WS = URL_WS_BASE + metodo;
Integer request = null;
try {
logger.info("URL_WS: " + URL_WS);
request = restTemplate.postForObject(URL_WS, parametro, Integer.class);
} catch (RestClientResponseException rre) {
logger.error("RestClientResponseException insertParametro [WS BO]: " + rre.getResponseBodyAsString());
logger.error("RestClientResponseException insertParametro [WS BO]: ", rre);
throw new CallWSBOException(rre.getResponseBodyAsString());
} catch (Exception e) {
logger.error("Exception insertParametro[WS BO]: ", e);
throw new CallWSBOException(e.getMessage());
}
return request;
}