feign.gson.GsonEncoder Java Examples

/**
 * The generalized version of the method that allows more in-depth customizations via
 * {@link RequestInterceptor}s.
 *
 * @param endpoint
 * 		URL of Marathon
 * @param interceptors optional request interceptors
 * @return Marathon client
 */
public static Marathon getInstance(String endpoint, RequestInterceptor... interceptors) {

	Builder b = Feign.builder()
			.encoder(new GsonEncoder(ModelUtils.GSON))
			.decoder(new GsonDecoder(ModelUtils.GSON))
			.errorDecoder(new MarathonErrorDecoder());
	if (interceptors != null)
		b.requestInterceptors(asList(interceptors));
	String debugOutput = System.getenv(DEBUG_JSON_OUTPUT);
	if ("System.out".equals(debugOutput)) {
		System.setProperty("org.slf4j.simpleLogger.logFile", "System.out");
		System.setProperty("org.slf4j.simpleLogger.defaultLogLevel", "debug");
		b.logger(new Slf4jLogger()).logLevel(Logger.Level.FULL);
	} else if (debugOutput != null) {
		b.logger(new Logger.JavaLogger().appendToFile(debugOutput)).logLevel(Logger.Level.FULL);
	}
	b.requestInterceptor(new MarathonHeadersInterceptor());
	return b.target(Marathon.class, endpoint);
}
 

@Provides
@Singleton
Feign feign(Logger logger, Logger.Level logLevel) {
  RecordAdapter recordAdapter = new RecordAdapter();
  return Feign.builder()
      .logger(logger)
      .logLevel(logLevel)
      .encoder(new GsonEncoder(Collections.<TypeAdapter<?>>singleton(recordAdapter)))
      .decoder(new GsonDecoder(Arrays.asList(
                   new KeystoneV2AccessAdapter(),
                   recordAdapter,
                   new DomainListAdapter(),
                   new RecordListAdapter()))
      )
      .build();
}
 

private static ZallyApi connect() {
  final String zallyUrl = ServiceManager.getService(ZallySettings.class).getZallyUrl();

  if (zallyUrl == null || zallyUrl.isEmpty()) {
    throw new RuntimeException("Zally URL is missing");
  }

  final Gson gson =
      new GsonBuilder()
          .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES)
          .create();
  final Decoder decoder = new GsonDecoder(gson);

  return Feign.builder()
      .encoder(new GsonEncoder())
      .decoder(decoder)
      .errorDecoder(new LintingResponseErrorDecoder())
      .logger(new Logger.ErrorLogger())
      .logLevel(Logger.Level.BASIC)
      .target(ZallyApi.class, zallyUrl);
}
 

@Provides
@Singleton
Feign feign(Logger logger, Logger.Level logLevel, DynECTErrorDecoder errorDecoder) {
  return Feign.builder()
      .logger(logger)
      .logLevel(logLevel)
      .encoder(new GsonEncoder())
      .decoder(new GsonDecoder(Arrays.<TypeAdapter<?>>asList(
                   new TokenAdapter(),
                   new NothingForbiddenAdapter(),
                   new ResourceRecordSetsAdapter(),
                   new ZoneNamesAdapter(),
                   new RecordsByNameAndTypeAdapter()))
      )
      .errorDecoder(errorDecoder)
      .build();
}
 

/**
 * Fetch the token from the authentication service.
 *
 *  @param loginURL           Login Url.
 *  @return Auth token.
 */
public static String getAuthToken(final String loginURL) {

    Login client = Feign.builder().client(getClientHostVerificationDisabled())
            .encoder(new GsonEncoder(ModelUtils.GSON))
            .target(Login.class, loginURL);

    Response response = client.login(new AuthRequest(getUsername(), getPassword(), "LOCAL"));

    if (response.status() == OK.code()) {
        Collection<String> headers = response.headers().get(TOKEN_HEADER_NAME);
        return headers.toArray(new String[headers.size()])[0];
    } else {
        throw new TestFrameworkException(TestFrameworkException.Type.LoginFailed, "Exception while " +
                "logging into the cluster. Authentication service returned the following error: "
                + response);
    }
}
 

static GitHub connect() {
  final Decoder decoder = new GsonDecoder();
  final Encoder encoder = new GsonEncoder();
  return Feign.builder()
      .encoder(encoder)
      .decoder(decoder)
      .errorDecoder(new GitHubErrorDecoder(decoder))
      .logger(new Logger.ErrorLogger())
      .logLevel(Logger.Level.BASIC)
      .requestInterceptor(template -> {
        template.header(
            // not available when building PRs...
            // https://docs.travis-ci.com/user/environment-variables/#defining-encrypted-variables-in-travisyml
            "Authorization",
            "token 383f1c1b474d8f05a21e7964976ab0d403fee071");
      })
      .target(GitHub.class, "https://api.github.com");
}
 

/**
 * PublisherClient constructor - Initialize a PublisherClient instance
 *
 */
public PublisherClient(RequestInterceptor requestInterceptor) {
    Feign.Builder builder = Feign.builder().client(new OkHttpClient(
            org.wso2.carbon.apimgt.integration.client.util.Utils.getSSLClient())).logger(new
            Slf4jLogger())
            .logLevel(Logger.Level.FULL)
            .requestInterceptor(requestInterceptor).encoder(new GsonEncoder()).decoder(new GsonDecoder());
    String basePath = Utils.replaceSystemProperty(APIMConfigReader.getInstance().getConfig().getPublisherEndpoint());

    api = builder.target(APIIndividualApi.class, basePath);
    apis = builder.target(APICollectionApi.class, basePath);
    document = builder.target(DocumentIndividualApi.class, basePath);
    application = builder.target(ApplicationIndividualApi.class, basePath);
    environments = builder.target(EnvironmentCollectionApi.class, basePath);
    subscriptions = builder.target(SubscriptionCollectionApi.class, basePath);
    tiers = builder.target(ThrottlingTierCollectionApi.class, basePath);
}
 

public StoreClient(RequestInterceptor requestInterceptor) {

        Feign.Builder builder = Feign.builder().client(new OkHttpClient(
                org.wso2.carbon.apimgt.integration.client.util.Utils.getSSLClient())).logger(new
                Slf4jLogger())
                .logLevel(Logger.Level.FULL)
                .requestInterceptor(requestInterceptor).encoder(new GsonEncoder()).decoder(new GsonDecoder());
        String basePath = Utils.replaceSystemProperty(APIMConfigReader.getInstance().getConfig().getStoreEndpoint());

        apis = builder.target(APICollectionApi.class, basePath);
        individualApi = builder.target(APIIndividualApi.class, basePath);
        applications = builder.target(ApplicationCollectionApi.class, basePath);
        individualApplication = builder.target(ApplicationIndividualApi.class, basePath);
        subscriptions = builder.target(SubscriptionCollectionApi.class, basePath);
        individualSubscription = builder.target(SubscriptionIndividualApi.class, basePath);
        subscriptionMultitpleApi = builder.target(SubscriptionMultitpleApi.class, basePath);
        tags = builder.target(TagCollectionApi.class, basePath);
        individualTier = builder.target(ThrottlingTierIndividualApi.class, basePath);
        tiers = builder.retryer(new Retryer.Default(100L, TimeUnit.SECONDS.toMillis(1L), 1))
                .options(new Request.Options(10000, 5000))
                .target(ThrottlingTierCollectionApi.class, basePath);

    }
 

@BeforeClass
public static void start() throws IOException {
  mock = Denominator.create(new MockProvider());
  server = new DenominatorD(mock);
  int port = server.start();
  client = Feign.builder()
      .encoder(new GsonEncoder())
      .decoder(new GsonDecoder())
      .target(DenominatorDApi.class, "http://localhost:" + port);

  mock.api().basicRecordSetsInZone("denominator.io.").put(ResourceRecordSet.<AData>builder()
      .name("www.denominator.io.")
      .type("A")
      .add(AData.create("192.0.2.1")).build());

  mock.api().weightedRecordSetsInZone("denominator.io.").put(ResourceRecordSet.<CNAMEData>builder()
      .name("www.weighted.denominator.io.")
      .type("CNAME")
      .qualifier("EU-West")
      .weighted(Weighted.create(1))
      .add(CNAMEData.create("www1.denominator.io.")).build());

  mock.api().weightedRecordSetsInZone("denominator.io.").put(ResourceRecordSet.<CNAMEData>builder()
      .name("www.weighted.denominator.io.")
      .type("CNAME")
      .qualifier("US-West")
      .weighted(Weighted.create(1))
      .add(CNAMEData.create("www2.denominator.io.")).build());
}
 

@Provides
@Singleton
Feign feign(Logger logger, Logger.Level logLevel) {
  return Feign.builder()
      .logger(logger)
      .logLevel(logLevel)
      .encoder(new GsonEncoder())
      .decoder(new GsonDecoder(Arrays.asList(
                   new KeystoneAccessAdapter("rax:dns"),
                   new JobAdapter(),
                   new DomainListAdapter(),
                   new RecordListAdapter()))
      )
      .build();
}
 

private static <T> T createClient(Class<T> type, String uri) {
    return Feign.builder()
        .client(new OkHttpClient())
        .encoder(new GsonEncoder())
        .decoder(new GsonDecoder())
        .logger(new Slf4jLogger(type))
        .logLevel(Logger.Level.FULL)
        .target(type, uri);
}
 

public static Marathon getInstance(String endpoint) {
	GsonDecoder decoder = new GsonDecoder(ModelUtils.GSON);
	GsonEncoder encoder = new GsonEncoder(ModelUtils.GSON);
	return Feign.builder().encoder(encoder).decoder(decoder)
			.errorDecoder(new MarathonErrorDecoder())
			.requestInterceptor(new MarathonHeadersInterceptor())
			.target(Marathon.class, endpoint);
}
 

/**
 * Creates an interceptor that authenticates all requests.
 */
public OAuthRequestInterceptor() {
    String username = APIMConfigReader.getInstance().getConfig().getUsername();
    String password = APIMConfigReader.getInstance().getConfig().getPassword();
    dcrClient = Feign.builder().client(new OkHttpClient(Utils.getSSLClient())).logger(new Slf4jLogger())
            .logLevel(Logger.Level.FULL).requestInterceptor(new BasicAuthRequestInterceptor(username,
                    password))
            .contract(new JAXRSContract()).encoder(new GsonEncoder()).decoder(new GsonDecoder())
            .target(DCRClient.class, Utils.replaceProperties(
                    APIMConfigReader.getInstance().getConfig().getDcrEndpoint()));
}
 

public static Metronome getInstance(String endpoint, RequestInterceptor... interceptors) {
    Feign.Builder b = Feign.builder().client(LoginClient.getClientHostVerificationDisabled())
            .logger(new Logger.ErrorLogger())
            .logLevel(Logger.Level.BASIC)
            .encoder(new GsonEncoder(ModelUtils.GSON))
            .decoder(new GsonDecoder(ModelUtils.GSON))
            //max wait period = 5 seconds ; max attempts = 5
            .retryer(new Retryer.Default(SECONDS.toMillis(1), SECONDS.toMillis(5), 5))
            .errorDecoder(new MetronomeErrorDecoder());
    if (interceptors != null) {
        b.requestInterceptors(asList(interceptors));
    }
    b.requestInterceptor(new MetronomeHeadersInterceptor());
    return b.target(Metronome.class, endpoint);
}
 

private static Marathon getInstance(String endpoint, RequestInterceptor... interceptors) {
    Feign.Builder b = Feign.builder().client(LoginClient.getClientHostVerificationDisabled())
            .logger(new Logger.ErrorLogger())
            .logLevel(Logger.Level.BASIC)
            .encoder(new GsonEncoder(ModelUtils.GSON))
            .decoder(new GsonDecoder(ModelUtils.GSON))
            .errorDecoder(new MarathonErrorDecoder())
            //max wait period = 5 seconds ; max attempts = 5
            .retryer(new Retryer.Default(SECONDS.toMillis(1), SECONDS.toMillis(5), 5));
    if (interceptors != null) {
        b.requestInterceptors(asList(interceptors));
    }
    b.requestInterceptor(new MarathonHeadersInterceptor());
    return b.target(Marathon.class, endpoint);
}
 

/**
 * The generalized version of the method that allows more in-depth customizations via
 * {@link RequestInterceptor}s.
 *
 * @param endpoint URL for Chronos API
 */
public static Chronos getInstance(String endpoint, RequestInterceptor... interceptors) {
	Builder b = Feign.builder()
			.encoder(new GsonEncoder(AbstractModel.GSON))
			.decoder(new MultiDecoder())
			.errorDecoder(new ChronosErrorDecoder());
	if (interceptors != null) {
		b.requestInterceptors(asList(interceptors));
	}
	b.requestInterceptor(new ChronosHeadersInterceptor());
	return b.target(Chronos.class, endpoint);
}
 

public Marathon build() {
    if (null == listOfServers) {
        if (!StringUtils.isEmpty(token)) {
            return getInstanceWithTokenAuth(baseEndpoint, token);
        } else if (!StringUtils.isEmpty(username)) {
            return getInstanceWithBasicAuth(baseEndpoint, username, password);
        } else {
            return getInstance(baseEndpoint);
        }
    } else {
        setMarathonRibbonProperty("listOfServers", listOfServers);
        setMarathonRibbonProperty("OkToRetryOnAllOperations", Boolean.TRUE.toString());
        setMarathonRibbonProperty("MaxAutoRetriesNextServer", maxRetryCount);
        setMarathonRibbonProperty("ConnectTimeout", connectionTimeout);
        setMarathonRibbonProperty("ReadTimeout", readTimeout);

        Feign.Builder builder = Feign.builder()
                .client(RibbonClient.builder().lbClientFactory(new MarathonLBClientFactory()).build())
                .encoder(new GsonEncoder(ModelUtils.GSON))
                .decoder(new GsonDecoder(ModelUtils.GSON))
                .errorDecoder(new MarathonErrorDecoder());

        if (!StringUtils.isEmpty(token)) {
            builder.requestInterceptor(new TokenAuthRequestInterceptor(token));
        }
        else if (!StringUtils.isEmpty(username)) {
            builder.requestInterceptor(new BasicAuthRequestInterceptor(username,password));
        }

        builder.requestInterceptor(new MarathonHeadersInterceptor());

        return builder.target(Marathon.class, DEFAULT_MARATHON_ENDPOINT);
    }
}
 

private static DCOS buildInstance(String endpoint, Consumer<Feign.Builder> customize) {
    GsonDecoder decoder = new GsonDecoder(ModelUtils.GSON);
    GsonEncoder encoder = new GsonEncoder(ModelUtils.GSON);

    Feign.Builder builder = Feign.builder()
                                 .encoder(encoder)
                                 .decoder(decoder)
                                 .errorDecoder(new DCOSErrorDecoder());
    customize.accept(builder);
    builder.requestInterceptor(new DCOSAPIInterceptor());

    return builder.target(DCOS.class, endpoint);
}
 

@Override
public void loadConfiguration(KeyManagerConfiguration configuration) throws APIManagementException {

    this.configuration = configuration;

    String consumerKey = (String) configuration.getParameter(APIConstants.KEY_MANAGER_CONSUMER_KEY);
    String consumerSecret = (String) configuration.getParameter(APIConstants.KEY_MANAGER_CONSUMER_SECRET);
    String keyManagerServiceUrl = (String) configuration.getParameter(APIConstants.AUTHSERVER_URL);

    String dcrEndpoint;
    if (configuration.getParameter(APIConstants.KeyManager.CLIENT_REGISTRATION_ENDPOINT) != null) {
        dcrEndpoint = (String) configuration.getParameter(APIConstants.KeyManager.CLIENT_REGISTRATION_ENDPOINT);
    } else {
        dcrEndpoint = keyManagerServiceUrl.split("/" + APIConstants.SERVICES_URL_RELATIVE_PATH)[0]
                .concat(getTenantAwareContext().trim()).concat("/api/identity/oauth2/dcr/v1.1/register");
    }
    String tokenEndpoint;
    if (configuration.getParameter(APIConstants.KeyManager.TOKEN_ENDPOINT) != null) {
        tokenEndpoint = (String) configuration.getParameter(APIConstants.KeyManager.TOKEN_ENDPOINT);
    } else {
        tokenEndpoint = keyManagerServiceUrl.split("/" + APIConstants.SERVICES_URL_RELATIVE_PATH)[0].concat(
                "/oauth2/token");
    }
    addKeyManagerConfigsAsSystemProperties(tokenEndpoint);
    String revokeEndpoint;
    if (configuration.getParameter(APIConstants.KeyManager.REVOKE_ENDPOINT) != null) {
        revokeEndpoint = (String) configuration.getParameter(APIConstants.KeyManager.REVOKE_ENDPOINT);
    } else {
        revokeEndpoint = keyManagerServiceUrl.split("/" + APIConstants.SERVICES_URL_RELATIVE_PATH)[0].concat(
                "/oauth2/revoke");
    }
    String scopeEndpoint;
    if (configuration.getParameter(APIConstants.KeyManager.SCOPE_MANAGEMENT_ENDPOINT) != null) {
        scopeEndpoint = (String) configuration.getParameter(APIConstants.KeyManager.SCOPE_MANAGEMENT_ENDPOINT);
    } else {
        scopeEndpoint = keyManagerServiceUrl.split("/" + APIConstants.SERVICES_URL_RELATIVE_PATH)[0]
                .concat(getTenantAwareContext().trim())
                .concat(APIConstants.KEY_MANAGER_OAUTH2_SCOPES_REST_API_BASE_PATH);
    }
    String introspectionEndpoint;
    if (configuration.getParameter(APIConstants.KeyManager.INTROSPECTION_ENDPOINT) != null) {
        introspectionEndpoint = (String) configuration.getParameter(APIConstants.KeyManager.INTROSPECTION_ENDPOINT);
    } else {
        introspectionEndpoint = keyManagerServiceUrl.split("/" + APIConstants.SERVICES_URL_RELATIVE_PATH)[0]
                .concat(getTenantAwareContext().trim()).concat("/oauth2/introspect");
    }
    accessTokenGenerator = new AccessTokenGenerator(tokenEndpoint, revokeEndpoint, consumerKey, consumerSecret);

    dcrClient = Feign.builder()
            .client(new OkHttpClient())
            .encoder(new GsonEncoder())
            .decoder(new GsonDecoder())
            .logger(new Slf4jLogger())
            .requestInterceptor(new BearerInterceptor(accessTokenGenerator))
            .errorDecoder(new KMClientErrorDecoder())
            .target(DCRClient.class, dcrEndpoint);
    authClient = Feign.builder()
            .client(new OkHttpClient())
            .encoder(new GsonEncoder())
            .decoder(new GsonDecoder())
            .logger(new Slf4jLogger())
            .errorDecoder(new KMClientErrorDecoder())
            .encoder(new FormEncoder())
            .target(AuthClient.class, tokenEndpoint);

    introspectionClient = Feign.builder()
            .client(new OkHttpClient())
            .encoder(new GsonEncoder())
            .decoder(new GsonDecoder())
            .logger(new Slf4jLogger())
            .requestInterceptor(new BearerInterceptor(accessTokenGenerator))
            .errorDecoder(new KMClientErrorDecoder())
            .encoder(new FormEncoder())
            .target(IntrospectionClient.class, introspectionEndpoint);
    scopeClient = Feign.builder()
            .client(new OkHttpClient())
            .encoder(new GsonEncoder())
            .decoder(new GsonDecoder())
            .logger(new Slf4jLogger())
            .requestInterceptor(new BearerInterceptor(accessTokenGenerator))
            .errorDecoder(new KMClientErrorDecoder())
            .target(ScopeClient.class, scopeEndpoint);
}
 

private static RequestTemplate encodeWithGson(final SampleObject sampleObject) {
  final GsonEncoder gsonEncoder = new GsonEncoder();
  final RequestTemplate templateForGsonEncoding = new RequestTemplate();
  gsonEncoder.encode(sampleObject, SampleObject.class, templateForGsonEncoding);
  return templateForGsonEncoding;
}