org.dataconservancy.cos.osf.client.support.AuthInterceptor.java Source code

Introduction

Here is the source code for org.dataconservancy.cos.osf.client.support.AuthInterceptor.java

Source

/*
 * Copyright 2016 Johns Hopkins University
 *
 * Licensed 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.dataconservancy.cos.osf.client.support;

import com.squareup.okhttp.Interceptor;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response;
import org.dataconservancy.cos.osf.client.config.OsfConfigurationService;

import java.io.IOException;

/**
 * @author Elliot Metsger (emetsger@jhu.edu)
 */
public class AuthInterceptor implements Interceptor {

    private String authHeader;

    private OsfConfigurationService osfConfigurationService;

    /**
     *
     * @param osfConfigurationService
     */
    public AuthInterceptor(final OsfConfigurationService osfConfigurationService) {
        this.osfConfigurationService = osfConfigurationService;
    }

    /**
     *
     * @param authHeader
     */
    public AuthInterceptor(final String authHeader) {
        this.authHeader = authHeader;
    }

    @Override
    public Response intercept(final Chain chain) throws IOException {

        String localAuthheader = null;

        // Check the value of the authHeader field, which may have been set on construction
        if (authHeader != null && !authHeader.trim().equals("")) {
            localAuthheader = authHeader;
        }

        // If it wasn't set, see if there's a configuration service and use that
        if (osfConfigurationService != null && osfConfigurationService.getConfiguration().getAuthHeader() != null
                && !osfConfigurationService.getConfiguration().getAuthHeader().trim().equals("")) {
            localAuthheader = osfConfigurationService.getConfiguration().getAuthHeader();
        }

        // if the auth header has been set, use it, otherwise simply proceed with the chain.
        if (localAuthheader == null) {
            return chain.proceed(chain.request());
        }

        Request req = chain.request();

        if (req.header("Authorization") == null) {
            req = req.newBuilder().addHeader("Authorization", localAuthheader).build();
        }

        return chain.proceed(req);
    }
}