org.apache.sentry.core.model.db.AccessURI.java Source code

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Here is the source code for org.apache.sentry.core.model.db.AccessURI.java

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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.sentry.core.model.db;

import org.apache.commons.lang.StringUtils;
import org.apache.hadoop.fs.Path;

public class AccessURI implements DBModelAuthorizable {
    /**
     * Represents all URIs
     */
    public static final AccessURI ALL = new AccessURI(AccessConstants.ALL);
    private static final String AUTHORITY_PREFIX = "://";

    private final String uriName;

    /**
     * Wrap a URI which can be HDFS, S3, SWIFT, WEBHDFS,etc. Do the validation for the URI's format.
     */
    public AccessURI(String uriName) {
        uriName = uriName == null ? "" : uriName;

        // Validating the URI format
        if (!uriName.equals(AccessConstants.ALL)) {
            Path uriPath = new Path(uriName);
            String schema = uriPath.toUri().getScheme();
            if (StringUtils.isBlank(schema) || !uriPath.isAbsolute()) {
                throw new IllegalArgumentException(
                        "URI '" + uriName + "' is invalid. Unsupported URI without schema or relative URI.");
            }

            if (!uriName.startsWith(schema + AUTHORITY_PREFIX)) {
                throw new IllegalArgumentException("URI '" + uriName + "' is invalid.");
            }
        }

        // ALL(*) represents all URIs.
        this.uriName = uriName;
    }

    @Override
    public String getName() {
        return uriName;
    }

    @Override
    public AuthorizableType getAuthzType() {
        return AuthorizableType.URI;
    }

    @Override
    public String toString() {
        return "URI [name=" + uriName + "]";
    }

    @Override
    public String getTypeName() {
        return getAuthzType().name();
    }

    @Override
    public int hashCode() {
        return uriName.hashCode();
    }

    @Override
    public boolean equals(Object o) {

        if (o == null) {
            return false;
        }

        if (!(o instanceof AccessURI)) {
            return false;
        }

        if (((AccessURI) o).getName() == null) {
            return false;
        }

        return ((AccessURI) o).getName().equals(uriName);
    }
}