org.apache.pulsar.client.impl.auth.oauth2.FlowBase Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.pulsar.client.impl.auth.oauth2;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Map;
import lombok.extern.slf4j.Slf4j;
import org.apache.pulsar.shade.org.apache.commons.lang.StringUtils;
import org.apache.pulsar.client.api.PulsarClientException;
import org.apache.pulsar.client.impl.auth.oauth2.protocol.DefaultMetadataResolver;
import org.apache.pulsar.client.impl.auth.oauth2.protocol.Metadata;
import org.apache.pulsar.client.impl.auth.oauth2.protocol.MetadataResolver;
/**
* An abstract OAuth 2.0 authorization flow.
*/
@Slf4j
abstract class FlowBase implements Flow {
private static final long serialVersionUID = 1L;
protected final URL issuerUrl;
protected transient Metadata metadata;
protected FlowBase(URL issuerUrl) {
this.issuerUrl = issuerUrl;
}
public void initialize() throws PulsarClientException {
try {
this.metadata = createMetadataResolver().resolve();
} catch (IOException e) {
log.error("Unable to retrieve OAuth 2.0 server metadata", e);
throw new PulsarClientException.AuthenticationException("Unable to retrieve OAuth 2.0 server metadata");
}
}
protected MetadataResolver createMetadataResolver() {
return DefaultMetadataResolver.fromIssuerUrl(issuerUrl);
}
static String parseParameterString(Map params, String name) {
String s = params.get(name);
if (StringUtils.isEmpty(s)) {
throw new IllegalArgumentException("Required configuration parameter: " + name);
}
return s;
}
static URL parseParameterUrl(Map params, String name) {
String s = params.get(name);
if (StringUtils.isEmpty(s)) {
throw new IllegalArgumentException("Required configuration parameter: " + name);
}
try {
return new URL(s);
} catch (MalformedURLException e) {
throw new IllegalArgumentException("Malformed configuration parameter: " + name);
}
}
}