com.microsoft.azure.cosmosdb.internal.directconnectivity.StoreResponse Maven / Gradle / Ivy

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/*
 * The MIT License (MIT)
 * Copyright (c) 2018 Microsoft Corporation
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.microsoft.azure.cosmosdb.internal.directconnectivity;

import com.microsoft.azure.cosmosdb.internal.HttpConstants;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.List;
import java.util.Map.Entry;
import java.util.stream.Collectors;

/**
 * Used internally to represents a response from the store.
 */
public class StoreResponse {
    final static Logger LOGGER = LoggerFactory.getLogger(StoreResponse.class);
    final private int status;
    final private String[] responseHeaderNames;
    final private String[] responseHeaderValues;
    final private InputStream httpEntityStream;
    final private String content;

    public StoreResponse(int status, List> headerEntries, InputStream inputStream) {
        this(status, headerEntries,null, inputStream);
    }

    public StoreResponse(int status, List> headerEntries, String content) {
        this(status, headerEntries, content, null);
    }

    private StoreResponse(
            int status,
            List> headerEntries, 
            String content,
            InputStream inputStream) {
        responseHeaderNames = new String[headerEntries.size()];
        responseHeaderValues = new String[headerEntries.size()];

        int i = 0;

        for(Entry headerEntry: headerEntries) {
            responseHeaderNames[i] = headerEntry.getKey();
            responseHeaderValues[i] = headerEntry.getValue();
            i++;
        }

        this.status = status;

        this.content = content;
        this.httpEntityStream = inputStream;
    }

    public int getStatus() {
        return status;
    }

    public String[] getResponseHeaderNames() {
        return responseHeaderNames;
    }

    public String[] getResponseHeaderValues() {
        return responseHeaderValues;
    }

    public String getResponseBody() {
        return this.content;
    }

    public InputStream getResponseStream() {
        // Some operation type doesn't have a response stream so this can be null
        return this.httpEntityStream;
    }

    public long getLSN() {
        String lsnString = this.getHeaderValue(WFConstants.BackendHeaders.LSN);
        if (StringUtils.isNotEmpty(lsnString)) {
            return Long.parseLong(lsnString);
        }

        return -1;
    }

    public String getPartitionKeyRangeId() {
        return this.getHeaderValue(WFConstants.BackendHeaders.PARTITION_KEY_RANGE_ID);
    }

    public String getContinuation() {
        return this.getHeaderValue(HttpConstants.HttpHeaders.CONTINUATION);
    }

    public String getHeaderValue(String attribute) {
        if (this.responseHeaderValues == null || this.responseHeaderNames.length != this.responseHeaderValues.length) {
            return null;
        }

        for (int i = 0; i < responseHeaderNames.length; i++) {
            if (responseHeaderNames[i].equalsIgnoreCase(attribute)) {
                return responseHeaderValues[i];
            }
        }

        return null;
    }
}