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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.athenz.identityprovider.client;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import com.yahoo.vespa.athenz.identity.ServiceIdentityProvider;
import com.yahoo.vespa.athenz.identityprovider.api.EntityBindingsMapper;
import com.yahoo.vespa.athenz.identityprovider.api.IdentityDocumentClient;
import com.yahoo.vespa.athenz.identityprovider.api.SignedIdentityDocument;
import com.yahoo.vespa.athenz.identityprovider.api.bindings.RoleListEntity;
import com.yahoo.vespa.athenz.identityprovider.api.bindings.SignedIdentityDocumentEntity;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.client.methods.RequestBuilder;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;
import javax.net.ssl.HostnameVerifier;
import javax.net.ssl.SSLContext;
import java.io.IOException;
import java.io.UncheckedIOException;
import java.net.URI;
import java.time.Duration;
import java.util.List;
import java.util.Optional;
import java.util.function.Supplier;
/**
* Default implementation of {@link IdentityDocumentClient}
*
* @author bjorncs
*/
public class DefaultIdentityDocumentClient implements IdentityDocumentClient {
private static final String IDENTITY_DOCUMENT_API = "/athenz/v1/provider/identity-document/";
private static final ObjectMapper objectMapper = new ObjectMapper().registerModule(new JavaTimeModule());
private final Supplier<SSLContext> sslContextSupplier;
private final HostnameVerifier hostnameVerifier;
private final URI configserverUri;
public DefaultIdentityDocumentClient(URI configserverUri,
SSLContext sslContext,
HostnameVerifier hostnameVerifier) {
this.configserverUri = configserverUri;
this.sslContextSupplier = () -> sslContext;
this.hostnameVerifier = hostnameVerifier;
}
public DefaultIdentityDocumentClient(URI configserverUri,
ServiceIdentityProvider identityProvider,
HostnameVerifier hostnameVerifier) {
this.configserverUri = configserverUri;
this.sslContextSupplier = identityProvider::getIdentitySslContext;
this.hostnameVerifier = hostnameVerifier;
}
@Override
public SignedIdentityDocument getNodeIdentityDocument(String host, int documentVersion) {
return getIdentityDocument(host, "node", documentVersion).orElseThrow();
}
@Override
public Optional<SignedIdentityDocument> getTenantIdentityDocument(String host, int documentVersion) {
return getIdentityDocument(host, "tenant", documentVersion);
}
@Override
public List<String> getNodeRoles(String hostname) {
try (var client = createHttpClient(sslContextSupplier.get(), hostnameVerifier)) {
var uri = configserverUri
.resolve(IDENTITY_DOCUMENT_API)
.resolve("roles/")
.resolve(hostname);
var request = RequestBuilder.get()
.setUri(uri)
.addHeader("Connection", "close")
.addHeader("Accept", "application/json")
.build();
try (var response = client.execute(request)) {
String responseContent = EntityUtils.toString(response.getEntity());
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode >= 200 && statusCode <= 299) {
var rolesEntity = objectMapper.readValue(responseContent, RoleListEntity.class);
return rolesEntity.roles();
} else {
throw new RuntimeException(
String.format(
"Failed to retrieve roles for host %s: %d - %s",
hostname,
statusCode,
responseContent));
}
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
private Optional<SignedIdentityDocument> getIdentityDocument(String host, String type, int documentVersion) {
try (CloseableHttpClient client = createHttpClient(sslContextSupplier.get(), hostnameVerifier)) {
URI uri = configserverUri
.resolve(IDENTITY_DOCUMENT_API)
.resolve(type + '/')
.resolve(host);
HttpUriRequest request = RequestBuilder.get()
.setUri(uri)
.addHeader("Connection", "close")
.addHeader("Accept", "application/json")
.addParameter("documentVersion", Integer.toString(documentVersion))
.build();
try (CloseableHttpResponse response = client.execute(request)) {
String responseContent = EntityUtils.toString(response.getEntity());
int statusCode = response.getStatusLine().getStatusCode();
if (statusCode >= 200 && statusCode <= 299) {
SignedIdentityDocumentEntity entity = objectMapper.readValue(responseContent, SignedIdentityDocumentEntity.class);
return Optional.of(EntityBindingsMapper.toSignedIdentityDocument(entity));
} else if (statusCode == 404) {
return Optional.empty();
} else {
throw new RuntimeException(
String.format(
"Failed to retrieve identity document for host %s: %d - %s",
host,
statusCode,
responseContent));
}
}
} catch (IOException e) {
throw new UncheckedIOException(e);
}
}
private static CloseableHttpClient createHttpClient(SSLContext sslContext,
HostnameVerifier hostnameVerifier) {
return HttpClientBuilder.create()
.setRetryHandler(new DefaultHttpRequestRetryHandler(3, /*requestSentRetryEnabled*/true))
.setSSLContext(sslContext)
.setSSLHostnameVerifier(hostnameVerifier)
.setUserAgent("default-identity-document-client")
.setDefaultRequestConfig(RequestConfig.custom()
.setConnectTimeout((int)Duration.ofSeconds(10).toMillis())
.setConnectionRequestTimeout((int)Duration.ofSeconds(10).toMillis())
.setSocketTimeout((int)Duration.ofSeconds(20).toMillis())
.build())
.build();
}
}
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