feat: Resolve the DID document for a given DID or BPN api added

src/main/java/org/eclipse/tractusx/managedidentitywallets/config/ExceptionHandling.java

@@ -21,6 +21,7 @@
 
 package org.eclipse.tractusx.managedidentitywallets.config;
 
+import org.eclipse.tractusx.managedidentitywallets.exception.DidDocumentsNotFoundProblem;
 import org.eclipse.tractusx.managedidentitywallets.exception.DuplicateWalletProblem;
 import org.eclipse.tractusx.managedidentitywallets.exception.WalletNotFoundProblem;
 import org.springframework.http.HttpStatus;
@@ -50,4 +51,12 @@ ProblemDetail handleDuplicateWalletProblem(DuplicateWalletProblem e) {
         problemDetail.setProperty("timestamp", System.currentTimeMillis());
         return problemDetail;
     }
+
+    @ExceptionHandler(DidDocumentsNotFoundProblem.class)
+    ProblemDetail handleDidDocumentNotFoundProblem(DidDocumentsNotFoundProblem e) {
+        ProblemDetail problemDetail = ProblemDetail.forStatusAndDetail(HttpStatus.NOT_FOUND, e.getMessage());
+        problemDetail.setTitle(e.getMessage());
+        problemDetail.setProperty("timestamp", System.currentTimeMillis());
+        return problemDetail;
+    }
 }

src/main/java/org/eclipse/tractusx/managedidentitywallets/constant/RestURI.java

@@ -33,4 +33,6 @@ public class RestURI {
     public static final String WALLETS = "/wallets";
 
     public static final String WALLETS_BY_BPN = "/wallets/{bpn}";
+
+    public static final String DID_DOCUMENTS = "/didDocuments/{identifier}";
 }

src/main/java/org/eclipse/tractusx/managedidentitywallets/controller/DidDocumentController.java

@@ -0,0 +1,43 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2023 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets.controller;
+
+import lombok.RequiredArgsConstructor;
+import org.eclipse.tractusx.managedidentitywallets.constant.RestURI;
+import org.eclipse.tractusx.managedidentitywallets.service.DidDocumentService;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequiredArgsConstructor
+public class DidDocumentController {
+    private final DidDocumentService service;
+
+    @GetMapping(path = RestURI.DID_DOCUMENTS, produces = MediaType.APPLICATION_JSON_VALUE)
+    public ResponseEntity<String> getDidDocument(@PathVariable(name = "identifier") String identifier) {
+        return ResponseEntity.status(HttpStatus.OK).body(service.getDidDocument(identifier));
+    }
+}

src/main/java/org/eclipse/tractusx/managedidentitywallets/dao/repository/WalletRepository.java

@@ -46,4 +46,6 @@ public interface WalletRepository extends JpaRepository<Wallet, Long> {
      * @return the boolean
      */
     boolean existsByBpn(String bpn);
+
+    Wallet getByDid(String did);
 }

src/main/java/org/eclipse/tractusx/managedidentitywallets/exception/DidDocumentsNotFoundProblem.java

@@ -0,0 +1,61 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2023 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets.exception;
+
+/**
+ * The type Did documents not found problem.
+ */
+public class DidDocumentsNotFoundProblem extends RuntimeException {
+    /**
+     * Instantiates a new Did documents not found problem.
+     */
+    public DidDocumentsNotFoundProblem() {
+    }
+
+    /**
+     * Instantiates a new Did documents not found problem.
+     *
+     * @param message the message
+     */
+    public DidDocumentsNotFoundProblem(String message) {
+        super(message);
+    }
+
+    /**
+     * Instantiates a new Did documents not found problem.
+     *
+     * @param message the message
+     * @param cause   the cause
+     */
+    public DidDocumentsNotFoundProblem(String message, Throwable cause) {
+        super(message, cause);
+    }
+
+    /**
+     * Instantiates a new Did documents not found problem.
+     *
+     * @param cause the cause
+     */
+    public DidDocumentsNotFoundProblem(Throwable cause) {
+        super(cause);
+    }
+}

src/main/java/org/eclipse/tractusx/managedidentitywallets/service/DidDocumentService.java

@@ -0,0 +1,46 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2023 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets.service;
+
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.eclipse.tractusx.managedidentitywallets.dao.entity.Wallet;
+import org.eclipse.tractusx.managedidentitywallets.dao.repository.WalletRepository;
+import org.eclipse.tractusx.managedidentitywallets.exception.DidDocumentsNotFoundProblem;
+import org.springframework.stereotype.Service;
+
+@Service
+@RequiredArgsConstructor
+@Slf4j
+public class DidDocumentService {
+
+    private final WalletRepository walletRepository;
+
+    public String getDidDocument(String identifier) {
+        Wallet wallet = identifier.contains(":") ? walletRepository.getByDid(identifier) : walletRepository.getByBpn(identifier);
+        if (wallet == null || wallet.getDidDocument() == null) {
+            throw new DidDocumentsNotFoundProblem("DidDocument not found for identifier " + identifier);
+        }
+        return wallet.getDidDocument();
+    }
+
+}

src/test/java/org/eclipse/tractusx/managedidentitywallets/DidDocumentsTest.java

@@ -0,0 +1,74 @@
+/*
+ * *******************************************************************************
+ *  Copyright (c) 2021,2023 Contributors to the Eclipse Foundation
+ *
+ *  See the NOTICE file(s) distributed with this work for additional
+ *  information regarding copyright ownership.
+ *
+ *  This program and the accompanying materials are made available under the
+ *  terms of the Apache License, Version 2.0 which is available at
+ *  https://www.apache.org/licenses/LICENSE-2.0.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ *  License for the specific language governing permissions and limitations
+ *  under the License.
+ *
+ *  SPDX-License-Identifier: Apache-2.0
+ * ******************************************************************************
+ */
+
+package org.eclipse.tractusx.managedidentitywallets;
+
+import org.eclipse.tractusx.managedidentitywallets.config.PostgresSQLContextInitializer;
+import org.eclipse.tractusx.managedidentitywallets.constant.RestURI;
+import org.eclipse.tractusx.managedidentitywallets.dao.entity.Wallet;
+import org.eclipse.tractusx.managedidentitywallets.dao.repository.WalletRepository;
+import org.junit.jupiter.api.*;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.ContextConfiguration;
+
+import java.util.UUID;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT, classes = {ManagedIdentityWalletsApplication.class})
+@ActiveProfiles("test")
+@ContextConfiguration(initializers = {PostgresSQLContextInitializer.class})
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+@TestMethodOrder(MethodOrderer.OrderAnnotation.class)
+public class DidDocumentsTest {
+    private final String bpn = "123456789";
+    @Autowired
+    private WalletRepository walletRepository;
+    @Autowired
+    private TestRestTemplate restTemplate;
+
+    @Test
+    @Order(1)
+    void getDidDocumentInvalidBpn404() {
+        ResponseEntity<String> response = restTemplate.getForEntity(RestURI.DID_DOCUMENTS, String.class, UUID.randomUUID().toString());
+        Assertions.assertEquals(HttpStatus.NOT_FOUND.value(), response.getStatusCode().value());
+    }
+
+    @Test
+    @Order(2)
+    void getDidDocument200() {
+        Wallet wallet = Wallet.builder()
+                .bpn(bpn)
+                .did("did:web:localhost" + bpn)
+                .didDocument("{\"@context\":[\"https://w3id.org/did/v1\"],\"id\":\"did:web:localhost%3A8080\",\"verificationMethod\":[{\"id\":\"did:web:localhost%3A8080#key-1\",\"type\":\"Ed25519VerificationKey2020\",\"controller\":\"did:web:localhost%3A8080\",\"publicKeyMultibase\":\"zc37wdjQ4VsLEmX2AoKMHjQNxTtQBdouKbhhwEXLhB1fNJqwFDDaWkqRQ2GTWEhvubaNp8v2ox5dK6B4Efk8n2xMR4so6Ybsgck1BVs3i8WfXNsPNj4Gyz2YSS9rqLpdDv8sfMYdemQa4eq3EmrrkSLNukQrdXvGEtr9cV49CM6cYC6MSXc3S8hxuKh32AbKGURrGDnT9b5j4gj59a7Z4d66EWR1FoLHTZqh8YC96qNboYJyPSCEA6ZgXzRqeKKVwpeSxKXWSD4sa3xEHNeSpLrL4ojXNP3LyNbaHZ2nYqNaQ5pxdnUJCUqKYmiSbyRxbCrZCHSY36xab9XRjpQqQPuDtzrUCJQhpspjg5rd14EABDYzX1x54ZDtiYS9y9j2Pkora3phAyW6EBVBK2u2jo2krLeUgYSWzDTfgsWUJgtT9Pwx6aXvAf68tPQTWJtNoCSsSTBUzAZagosQnGLLTqya3Kgqg9VH1H2KuRfRQVTH29LnfuEa3e9Q2vn8sa6tS74oX2b7tKacndbnbw2CSVmbcuc9qZG8GZEc8ikK1Vvw3ukxTr\"}]}")
+                .algorithm("ED25519")
+                .name(bpn)
+                .build();
+        walletRepository.save(wallet);
+        ResponseEntity<String> response = restTemplate.getForEntity(RestURI.DID_DOCUMENTS, String.class, bpn);
+        Assertions.assertEquals(HttpStatus.OK.value(), response.getStatusCode().value());
+        Assertions.assertNotNull(response.getBody());
+        System.out.print(response.getBody());
+    }
+}