Update OAuth2 examples

Author: alex268

auth/oauth2_token_exchange/jwt_token/pom.xml

@@ -6,6 +6,7 @@
         <groupId>tech.ydb.examples.auth</groupId>
         <artifactId>ydb-sdk-auth-examples</artifactId>
         <version>1.1.0-SNAPSHOT</version>
+        <relativePath>../../pom.xml</relativePath>
     </parent>
 
     <artifactId>ydb-java-example-auth-oauth2-token-credentials</artifactId>

auth/oauth2_token_exchange/jwt_token/src/main/java/tech/ydb/example/Main.java

@@ -1,8 +1,8 @@
 package tech.ydb.example;
 
 
-import tech.ydb.auth.OAuth2Token;
 import tech.ydb.auth.OAuth2TokenExchangeProvider;
+import tech.ydb.auth.OAuth2TokenSource;
 import tech.ydb.core.grpc.GrpcTransport;
 import tech.ydb.table.SessionRetryContext;
 import tech.ydb.table.TableClient;
@@ -22,8 +22,8 @@ public static void main(String[] args) {
         String oauth2Endpoint = args[1];
         String refreshToken = args[2];
 
-        OAuth2Token token = OAuth2Token.fromValue(refreshToken);
-        OAuth2TokenExchangeProvider authProvider = OAuth2TokenExchangeProvider.newBuilder(oauth2Endpoint, token)
+        OAuth2TokenSource tokenSource = OAuth2TokenSource.fromValue(refreshToken);
+        OAuth2TokenExchangeProvider authProvider = OAuth2TokenExchangeProvider.newBuilder(oauth2Endpoint, tokenSource)
                 .withScope("demo-scope") // customize of OAuth2 request
                 .build();
 

auth/oauth2_token_exchange/private_key/pom.xml

@@ -6,6 +6,7 @@
         <groupId>tech.ydb.examples.auth</groupId>
         <artifactId>ydb-sdk-auth-examples</artifactId>
         <version>1.1.0-SNAPSHOT</version>
+        <relativePath>../../pom.xml</relativePath>
     </parent>
 
     <artifactId>ydb-java-example-auth-oauth2-key-credentials</artifactId>

auth/oauth2_token_exchange/private_key/src/main/java/tech/ydb/example/Main.java

@@ -3,8 +3,8 @@
 
 import java.io.File;
 
-import tech.ydb.auth.OAuth2Token;
 import tech.ydb.auth.OAuth2TokenExchangeProvider;
+import tech.ydb.auth.OAuth2TokenSource;
 import tech.ydb.core.grpc.GrpcTransport;
 import tech.ydb.table.SessionRetryContext;
 import tech.ydb.table.TableClient;
@@ -24,11 +24,11 @@ public static void main(String[] args) {
         String oauth2Endpoint = args[1];
         String keyPemPath = args[2];
 
-        OAuth2Token token = OAuth2Token.fromPrivateKeyPemFile(new File(keyPemPath))
+        OAuth2TokenSource tokenSource = OAuth2TokenSource.withPrivateKeyPemFile(new File(keyPemPath))
                 .withIssuer("test-issuer") // customize of JWT token
                 .build();
 
-        OAuth2TokenExchangeProvider authProvider = OAuth2TokenExchangeProvider.newBuilder(oauth2Endpoint, token)
+        OAuth2TokenExchangeProvider authProvider = OAuth2TokenExchangeProvider.newBuilder(oauth2Endpoint, tokenSource)
                 .withScope("demo-scope") // customize of OAuth2 request
                 .build();