Java.libraries.retrofit2.ApiClient.mustache Maven / Gradle / Ivy
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package {{invokerPackage}};
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Date;
import java.util.LinkedHashMap;
import java.util.Map;
import org.apache.oltu.oauth2.client.request.OAuthClientRequest.AuthenticationRequestBuilder;
import org.apache.oltu.oauth2.client.request.OAuthClientRequest.TokenRequestBuilder;
{{^java8}}
import org.joda.time.DateTime;
import org.joda.time.LocalDate;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.ISODateTimeFormat;
{{/java8}}
{{#java8}}
import java.time.LocalDate;
import java.time.OffsetDateTime;
import java.time.format.DateTimeFormatter;
{{/java8}}
import retrofit2.Converter;
import retrofit2.Retrofit;
{{#useRxJava}}import retrofit2.adapter.rxjava.RxJavaCallAdapterFactory;{{/useRxJava}}
import retrofit2.converter.gson.GsonConverterFactory;
import retrofit2.converter.scalars.ScalarsConverterFactory;
import com.google.gson.Gson;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonParseException;
import com.google.gson.TypeAdapter;
import com.google.gson.stream.JsonReader;
import com.google.gson.stream.JsonWriter;
import okhttp3.Interceptor;
import okhttp3.OkHttpClient;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;
import {{invokerPackage}}.auth.HttpBasicAuth;
import {{invokerPackage}}.auth.ApiKeyAuth;
import {{invokerPackage}}.auth.OAuth;
import {{invokerPackage}}.auth.OAuth.AccessTokenListener;
import {{invokerPackage}}.auth.OAuthFlow;
public class ApiClient {
private Map apiAuthorizations;
private OkHttpClient.Builder okBuilder;
private Retrofit.Builder adapterBuilder;
public ApiClient() {
apiAuthorizations = new LinkedHashMap();
createDefaultAdapter();
}
public ApiClient(String[] authNames) {
this();
for(String authName : authNames) { {{#hasAuthMethods}}
Interceptor auth;
{{#authMethods}}if (authName == "{{name}}") { {{#isBasic}}
auth = new HttpBasicAuth();{{/isBasic}}{{#isApiKey}}
auth = new ApiKeyAuth({{#isKeyInHeader}}"header"{{/isKeyInHeader}}{{^isKeyInHeader}}"query"{{/isKeyInHeader}}, "{{keyParamName}}");{{/isApiKey}}{{#isOAuth}}
auth = new OAuth(OAuthFlow.{{flow}}, "{{authorizationUrl}}", "{{tokenUrl}}", "{{#scopes}}{{scope}}{{#hasMore}}, {{/hasMore}}{{/scopes}}");{{/isOAuth}}
} else {{/authMethods}}{
throw new RuntimeException("auth name \"" + authName + "\" not found in available auth names");
}
addAuthorization(authName, auth);{{/hasAuthMethods}}{{^hasAuthMethods}}
throw new RuntimeException("auth name \"" + authName + "\" not found in available auth names");{{/hasAuthMethods}}
}
}
/**
* Basic constructor for single auth name
* @param authName Authentication name
*/
public ApiClient(String authName) {
this(new String[]{authName});
}
/**
* Helper constructor for single api key
* @param authName Authentication name
* @param apiKey API key
*/
public ApiClient(String authName, String apiKey) {
this(authName);
this.setApiKey(apiKey);
}
/**
* Helper constructor for single basic auth or password oauth2
* @param authName Authentication name
* @param username Username
* @param password Password
*/
public ApiClient(String authName, String username, String password) {
this(authName);
this.setCredentials(username, password);
}
/**
* Helper constructor for single password oauth2
* @param authName Authentication name
* @param clientId Client ID
* @param secret Client Secret
* @param username Username
* @param password Password
*/
public ApiClient(String authName, String clientId, String secret, String username, String password) {
this(authName);
this.getTokenEndPoint()
.setClientId(clientId)
.setClientSecret(secret)
.setUsername(username)
.setPassword(password);
}
public void createDefaultAdapter() {
Gson gson = new GsonBuilder()
.setDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ")
{{^java8}}
.registerTypeAdapter(DateTime.class, new DateTimeTypeAdapter())
{{/java8}}
{{#java8}}
.registerTypeAdapter(OffsetDateTime.class, new OffsetDateTimeTypeAdapter())
{{/java8}}
.registerTypeAdapter(LocalDate.class, new LocalDateTypeAdapter())
.create();
okBuilder = new OkHttpClient.Builder();
String baseUrl = "{{{basePath}}}";
if(!baseUrl.endsWith("/"))
baseUrl = baseUrl + "/";
adapterBuilder = new Retrofit
.Builder()
.baseUrl(baseUrl)
{{#useRxJava}}.addCallAdapterFactory(RxJavaCallAdapterFactory.create()){{/useRxJava}}
.addConverterFactory(ScalarsConverterFactory.create())
.addConverterFactory(GsonCustomConverterFactory.create(gson));
}
public S createService(Class serviceClass) {
return adapterBuilder
.client(okBuilder.build())
.build()
.create(serviceClass);
}
/**
* Helper method to configure the first api key found
* @param apiKey API key
*/
private void setApiKey(String apiKey) {
for(Interceptor apiAuthorization : apiAuthorizations.values()) {
if (apiAuthorization instanceof ApiKeyAuth) {
ApiKeyAuth keyAuth = (ApiKeyAuth) apiAuthorization;
keyAuth.setApiKey(apiKey);
return;
}
}
}
/**
* Helper method to configure the username/password for basic auth or password oauth
* @param username Username
* @param password Password
*/
private void setCredentials(String username, String password) {
for(Interceptor apiAuthorization : apiAuthorizations.values()) {
if (apiAuthorization instanceof HttpBasicAuth) {
HttpBasicAuth basicAuth = (HttpBasicAuth) apiAuthorization;
basicAuth.setCredentials(username, password);
return;
}
if (apiAuthorization instanceof OAuth) {
OAuth oauth = (OAuth) apiAuthorization;
oauth.getTokenRequestBuilder().setUsername(username).setPassword(password);
return;
}
}
}
/**
* Helper method to configure the token endpoint of the first oauth found in the apiAuthorizations (there should be only one)
* @return Token request builder
*/
public TokenRequestBuilder getTokenEndPoint() {
for(Interceptor apiAuthorization : apiAuthorizations.values()) {
if (apiAuthorization instanceof OAuth) {
OAuth oauth = (OAuth) apiAuthorization;
return oauth.getTokenRequestBuilder();
}
}
return null;
}
/**
* Helper method to configure authorization endpoint of the first oauth found in the apiAuthorizations (there should be only one)
* @return Authentication request builder
*/
public AuthenticationRequestBuilder getAuthorizationEndPoint() {
for(Interceptor apiAuthorization : apiAuthorizations.values()) {
if (apiAuthorization instanceof OAuth) {
OAuth oauth = (OAuth) apiAuthorization;
return oauth.getAuthenticationRequestBuilder();
}
}
return null;
}
/**
* Helper method to pre-set the oauth access token of the first oauth found in the apiAuthorizations (there should be only one)
* @param accessToken Access token
*/
public void setAccessToken(String accessToken) {
for(Interceptor apiAuthorization : apiAuthorizations.values()) {
if (apiAuthorization instanceof OAuth) {
OAuth oauth = (OAuth) apiAuthorization;
oauth.setAccessToken(accessToken);
return;
}
}
}
/**
* Helper method to configure the oauth accessCode/implicit flow parameters
* @param clientId Client ID
* @param clientSecret Client secret
* @param redirectURI Redirect URI
*/
public void configureAuthorizationFlow(String clientId, String clientSecret, String redirectURI) {
for(Interceptor apiAuthorization : apiAuthorizations.values()) {
if (apiAuthorization instanceof OAuth) {
OAuth oauth = (OAuth) apiAuthorization;
oauth.getTokenRequestBuilder()
.setClientId(clientId)
.setClientSecret(clientSecret)
.setRedirectURI(redirectURI);
oauth.getAuthenticationRequestBuilder()
.setClientId(clientId)
.setRedirectURI(redirectURI);
return;
}
}
}
/**
* Configures a listener which is notified when a new access token is received.
* @param accessTokenListener Access token listener
*/
public void registerAccessTokenListener(AccessTokenListener accessTokenListener) {
for(Interceptor apiAuthorization : apiAuthorizations.values()) {
if (apiAuthorization instanceof OAuth) {
OAuth oauth = (OAuth) apiAuthorization;
oauth.registerAccessTokenListener(accessTokenListener);
return;
}
}
}
/**
* Adds an authorization to be used by the client
* @param authName Authentication name
* @param authorization Authorization interceptor
*/
public void addAuthorization(String authName, Interceptor authorization) {
if (apiAuthorizations.containsKey(authName)) {
throw new RuntimeException("auth name \"" + authName + "\" already in api authorizations");
}
apiAuthorizations.put(authName, authorization);
okBuilder.addInterceptor(authorization);
}
public Map getApiAuthorizations() {
return apiAuthorizations;
}
public void setApiAuthorizations(Map apiAuthorizations) {
this.apiAuthorizations = apiAuthorizations;
}
public Retrofit.Builder getAdapterBuilder() {
return adapterBuilder;
}
public void setAdapterBuilder(Retrofit.Builder adapterBuilder) {
this.adapterBuilder = adapterBuilder;
}
public OkHttpClient.Builder getOkBuilder() {
return okBuilder;
}
public void addAuthsToOkBuilder(OkHttpClient.Builder okBuilder) {
for(Interceptor apiAuthorization : apiAuthorizations.values()) {
okBuilder.addInterceptor(apiAuthorization);
}
}
/**
* Clones the okBuilder given in parameter, adds the auth interceptors and uses it to configure the Retrofit
* @param okClient An instance of OK HTTP client
*/
public void configureFromOkclient(OkHttpClient okClient) {
this.okBuilder = okClient.newBuilder();
addAuthsToOkBuilder(this.okBuilder);
}
}
/**
* This wrapper is to take care of this case:
* when the deserialization fails due to JsonParseException and the
* expected type is String, then just return the body string.
*/
class GsonResponseBodyConverterToString implements Converter {
private final Gson gson;
private final Type type;
GsonResponseBodyConverterToString(Gson gson, Type type) {
this.gson = gson;
this.type = type;
}
@Override public T convert(ResponseBody value) throws IOException {
String returned = value.string();
try {
return gson.fromJson(returned, type);
}
catch (JsonParseException e) {
return (T) returned;
}
}
}
class GsonCustomConverterFactory extends Converter.Factory
{
public static GsonCustomConverterFactory create(Gson gson) {
return new GsonCustomConverterFactory(gson);
}
private final Gson gson;
private final GsonConverterFactory gsonConverterFactory;
private GsonCustomConverterFactory(Gson gson) {
if (gson == null) throw new NullPointerException("gson == null");
this.gson = gson;
this.gsonConverterFactory = GsonConverterFactory.create(gson);
}
@Override
public Converter responseBodyConverter(Type type, Annotation[] annotations, Retrofit retrofit) {
if(type.equals(String.class))
return new GsonResponseBodyConverterToString