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/**
*
*/
package org.onap.ccsdk.dashboard.rest;
import java.net.URL;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.web.client.RestTemplate;
/**
* Base class for all the Rest client implementations
*
* @author rp5662
*
*/
public class RestClientBase {
protected RestTemplate restTemplate = null;
protected void createRestTemplate(URL url, String user, String pass, String urlScheme) {
RestTemplate restTempl = null;
final HttpHost httpHost = new HttpHost(url.getHost(), url.getPort(), urlScheme);
// Build a client with a credentials provider
CloseableHttpClient httpClient = null;
if (user != null && pass != null) {
CredentialsProvider credsProvider = new BasicCredentialsProvider();
credsProvider.setCredentials(new AuthScope(httpHost), new UsernamePasswordCredentials(user, pass));
httpClient = HttpClientBuilder.create().setDefaultCredentialsProvider(credsProvider).build();
} else {
httpClient = HttpClientBuilder.create().build();
}
// Create request factory
HttpComponentsClientHttpRequestFactoryBasicAuth requestFactory = new HttpComponentsClientHttpRequestFactoryBasicAuth(
httpHost);
requestFactory.setHttpClient(httpClient);
// Put the factory in the template
restTempl = new RestTemplate();
restTempl.setRequestFactory(requestFactory);
this.restTemplate = restTempl;
}
/**
* Builds URL ensuring appropriate separators. The base comes from
* properties file so could have many problems.
*
* @param base
* @param suffix
* @param queryParams
* key-value pairs; i.e. must have an even number of entries.
* Ignored if null.
* @return
*/
protected String buildUrl(final String[] path, final String[] queryParams) {
StringBuilder sb = new StringBuilder(path[0]);
for (int p = 1; p < path.length; ++p) {
if (!path[p - 1].endsWith("/") && !path[p].startsWith("/"))
sb.append('/');
sb.append(path[p]);
}
if (queryParams != null && queryParams.length > 0) {
sb.append('?');
int i = 0;
while (i < queryParams.length) {
if (i > 0)
sb.append('&');
sb.append(queryParams[i]);
sb.append('=');
sb.append(queryParams[i + 1]);
i += 2;
}
}
return sb.toString();
}
/**
* Create Http Entity for the tenant header
*
* @param tenant
* @return
*/
protected HttpEntity<String> getTenantHeader(String tenant) {
HttpHeaders headers = new HttpHeaders();
headers.set("Tenant", tenant);
return new HttpEntity<String>("parameters", headers);
}
}
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