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DefaultJwtExtractor.java
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DefaultJwtExtractor.java
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/*
* Copyright (c) 2021 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 Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*/
package org.eclipse.ditto.gateway.service.security.authentication.jwt;
import java.util.Optional;
import org.eclipse.ditto.base.model.headers.DittoHeaders;
import org.eclipse.ditto.jwt.model.ImmutableJsonWebToken;
import org.eclipse.ditto.jwt.model.JsonWebToken;
import org.eclipse.ditto.gateway.service.security.HttpHeader;
import org.eclipse.ditto.gateway.service.security.utils.HttpUtils;
import org.apache.pekko.http.javadsl.server.RequestContext;
/**
* Default implementation of {@link JwtExtractor}
* extracting the JWT from the Authorization header.
*/
final class DefaultJwtExtractor implements JwtExtractor {
private static final String AUTHORIZATION_JWT = "Bearer";
private static final DefaultJwtExtractor INSTANCE = new DefaultJwtExtractor();
private DefaultJwtExtractor() {
}
public static JwtExtractor getInstance() {
return INSTANCE;
}
@Override
public Optional<JsonWebToken> apply(final RequestContext requestContext, final DittoHeaders dittoHeaders) {
return HttpUtils.getRequestHeader(requestContext, HttpHeader.AUTHORIZATION.toString())
.map(ImmutableJsonWebToken::fromAuthorization);
}
@Override
public boolean isApplicable(final RequestContext requestContext) {
return HttpUtils.containsAuthorizationForPrefix(requestContext, AUTHORIZATION_JWT);
}
@Override
public String getErrorDescription() {
return "Please provide a valid JWT in the authorization header prefixed with 'Bearer '.";
}
}