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/*
* Copyright © 2018 European Support Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://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.
*/
package org.onap.sdc.workflow.api;
import static org.apache.commons.codec.digest.DigestUtils.md5Hex;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.nio.charset.Charset;
import java.security.GeneralSecurityException;
import java.security.KeyStore;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import org.apache.http.conn.ssl.TrustStrategy;
import org.openecomp.sdc.logging.api.Logger;
import org.openecomp.sdc.logging.api.LoggerFactory;
import java.util.Base64;
import org.apache.commons.io.IOUtils;
import org.apache.http.HttpHost;
import org.apache.http.conn.ssl.NoopHostnameVerifier;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.TrustSelfSignedStrategy;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.onap.sdc.workflow.api.types.dto.ArtifactDeliveriesRequestDto;
import org.onap.sdc.workflow.persistence.types.ArtifactEntity;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.web.client.RestTemplateBuilder;
import org.springframework.http.*;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.stereotype.Component;
import org.springframework.web.client.RestTemplate;
import javax.net.ssl.SSLContext;
@Component("ArtifactAssociationHandler")
public class ArtifactAssociationService {
private static final String WORKFLOW_ARTIFACT_TYPE = "WORKFLOW";
private static final String WORKFLOW_ARTIFACT_DESCRIPTION = "Workflow Artifact Description";
private static final String USER_ID_HEADER = "USER_ID";
private static final String MD5_HEADER = "Content-MD5";
private static final String X_ECOMP_INSTANCE_ID_HEADER = "X-ECOMP-InstanceID";
private static final String INIT_ERROR_MSG =
"Failed while attaching workflow artifact to Operation in SDC. Parameters were not initialized: %s";
private static final String INIT_CLIENT_MSG =
"Failed while creating the HTTP client to SDC. Following exception: %s";
private static final Logger LOGGER = LoggerFactory.getLogger(ArtifactAssociationService.class);
@Value("${sdc.be.endpoint}")
private String sdcBeEndpoint;
@Value("${sdc.be.protocol}")
private String sdcBeProtocol;
@Value("${sdc.be.external.user}")
private String sdcUser;
@Value("${sdc.be.external.password}")
private String sdcPassword;
private RestTemplate restClient;
private KeyStore getKeyStore(String file, String password, String keyStoreType) throws IOException, GeneralSecurityException {
KeyStore keyStore = KeyStore.getInstance(keyStoreType);
File keyFile = new File(file);
try (FileInputStream inStr = new FileInputStream(keyFile)) {
keyStore.load(inStr, password.toCharArray());
}
return keyStore;
}
@Autowired
public ArtifactAssociationService(RestTemplateBuilder builder,
@Value("${server.ssl.trust-store}")
String truststorePath,
@Value("${server.ssl.trust-store-password}")
String truststorePassword,
@Value("${server.ssl.trust-store-type}")
String truststoreType,
@Value("${server.ssl.key-store}")
String keystorePath,
@Value("${server.ssl.key-password}")
String keystorePassword,
@Value("${server.ssl.key-store-type}")
String keystoreType,
@Value("${sdc.be.protocol}")
String protocol) {
if (protocol != null &&
!protocol.equalsIgnoreCase(HttpHost.DEFAULT_SCHEME_NAME)) {
try {
KeyStore trustStore = getKeyStore(truststorePath, truststorePassword, truststoreType);
KeyStore keyStore = getKeyStore(keystorePath, keystorePassword, keystoreType);
SSLContext sslcontext = SSLContexts.custom()
.loadKeyMaterial(keyStore, keystorePassword.toCharArray())
.loadTrustMaterial(trustStore, new TrustSelfSignedStrategy())
.build();
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(
sslcontext,
new NoopHostnameVerifier()
);
CloseableHttpClient httpClient =
HttpClients.custom()
.setSSLSocketFactory(sslsf)
.setSSLHostnameVerifier(new NoopHostnameVerifier())
.build();
HttpComponentsClientHttpRequestFactory factory = new HttpComponentsClientHttpRequestFactory(httpClient);
this.restClient = new RestTemplate(factory);
} catch (Exception e) {
LOGGER.error(String.format(INIT_CLIENT_MSG, e.getMessage()), e);
}
} else {
this.restClient = builder.build();
}
}
void setRestClient(RestTemplate restClient) {
this.restClient = restClient;
}
void setSdcBeEndpoint(String value) {
this.sdcBeEndpoint = value;
}
ResponseEntity<String> execute(String userId, ArtifactDeliveriesRequestDto deliveriesRequestDto,
ArtifactEntity artifactEntity) {
Optional<String> initializationState = parametersInitializationState();
if (initializationState.isPresent()) {
LOGGER.error(String.format(INIT_ERROR_MSG, initializationState.get()));
return ResponseEntity.status(HttpStatus.EXPECTATION_FAILED).body(String.format(INIT_ERROR_MSG, initializationState.get()));
}
String formattedArtifact;
try {
formattedArtifact = getFormattedWorkflowArtifact(artifactEntity);
} catch (IOException e) {
LOGGER.error("Failed while attaching workflow artifact to Operation in SDC", e);
return ResponseEntity.status(HttpStatus.EXPECTATION_FAILED).body(e.getMessage());
}
HttpEntity<String> request = new HttpEntity<>(formattedArtifact, createHeaders(userId, formattedArtifact));
return restClient.exchange(sdcBeProtocol + "://" + sdcBeEndpoint + "/" + deliveriesRequestDto.getEndpoint(),
HttpMethod.valueOf(deliveriesRequestDto.getMethod()), request, String.class);
}
Optional<String> parametersInitializationState() {
ArrayList<String> result = new ArrayList<>();
if (sdcBeEndpoint == null || sdcBeEndpoint.equals("")) {
result.add("SDC_ENDPOINT");
}
if (sdcBeProtocol == null || sdcBeProtocol.equals("")) {
result.add("SDC_PROTOCOL");
}
if (sdcUser == null || sdcUser.equals("")) {
result.add("SDC_USER");
}
if (sdcPassword == null || sdcPassword.equals("")) {
result.add("SDC_PASSWORD");
}
if (result.isEmpty() || this.restClient == null) {
return Optional.empty();
} else {
return Optional.of(result.toString());
}
}
private String getFormattedWorkflowArtifact(ArtifactEntity artifactEntity) throws IOException {
byte[] encodeBase64 = Base64.getEncoder().encode(IOUtils.toByteArray(artifactEntity.getArtifactData()));
String encodedPayloadData = new String(encodeBase64);
Map<String, String> artifactInfo = new HashMap<>();
artifactInfo.put("artifactName", artifactEntity.getFileName());
artifactInfo.put("payloadData", encodedPayloadData);
artifactInfo.put("artifactType", WORKFLOW_ARTIFACT_TYPE);
artifactInfo.put("description", WORKFLOW_ARTIFACT_DESCRIPTION);
ObjectMapper mapper = new ObjectMapper();
return mapper.writeValueAsString(artifactInfo);
}
private HttpHeaders createHeaders(String userId, String formattedArtifact) {
HttpHeaders headers = new HttpHeaders();
headers.add(USER_ID_HEADER, userId);
headers.add(HttpHeaders.AUTHORIZATION, createAuthorizationsHeaderValue(sdcUser, sdcPassword));
headers.add(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_JSON_VALUE);
headers.add(MD5_HEADER, calculateMD5Base64EncodedByString(formattedArtifact));
headers.add(X_ECOMP_INSTANCE_ID_HEADER, "InstanceId");
return headers;
}
private String calculateMD5Base64EncodedByString(String data) {
String calculatedMd5 = md5Hex(data);
// encode base-64 result
byte[] encodeBase64 = Base64.getEncoder().encode(calculatedMd5.getBytes());
return new String(encodeBase64);
}
private String createAuthorizationsHeaderValue(String username, String password) {
String auth = username + ":" + password;
byte[] encodedAuth = Base64.getEncoder().encode(auth.getBytes(Charset.forName("US-ASCII")));
return "Basic " + new String(encodedAuth);
}
}
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