Amazon web services AWS CloudSearch导出/下载数据

我在AWS CloudSearch索引中有大约150万个文档。这花费了我太多，我希望迁移出服务。我无法查看如何从索引下载或导出文档。有可能吗？

亚马逊（仍然）没有提供从Cloudsearch域导出所有数据的方法，但是，自己编写一个实用程序来实现这一点并不困难。

出于类似的需要，我不得不浏览整个Cloudsearch域（超过10000个限制）来生成一个文件

我使用了一个nodeJS脚本来处理这个问题，如下所示：

var AWS = require('aws-sdk');
var fs = require('fs');

AWS.config.update({
    accessKeyId: '<yourAccessKey>', secretAccessKey: '<yourSecretAccessKey>',
    region: '<yourRegion>',endpoint: '<YourSearchDomainEndPoint>'
});

var batchSize = 5000; //Number of item on every search... Max:10000    
var compteur = 0;
var result = [];

var params = {query:""};
var cloudsearchdomain = new AWS.CloudSearchDomain(params);

function launchSearch(theContext) {
    process.stdout.write('Launch AWS.CloudSearch ');

    if (theContext==null) {
        process.stdout.write('initial request ... ');
    } else {        
        var current  = (theContext.start/batchSize) +2 ;
        var totalRun = (Math.ceil(theContext.found/batchSize  * 10) / 10) + 1;
        process.stdout.write('( ' + current + ' / ' + totalRun + ' )       ... ');
    }

    params = {
           query:"-aQueryStringImpossibleToFind",
           cursor: (theContext==null)?"initial":theContext.cursor,
           size:batchSize 
    };  

    var forCursor = new AWS.CloudSearchDomain(params);

    forCursor.search(params, function(err, data) {
        if (err) {
            console.log("Failed with params :" );
            console.log(err);
        } else {
            resultMessage = data;       
            compteur = compteur + data.hits.hit.length;
            for(var i=0;i<data.hits.hit.length;i++){
                result.push(data.hits.hit[i]
                });
            }   
        }   

        process.stdout.write(resultMessage.hits.hit.length + ' hits found.');

        if (resultMessage.hits.hit.length==0) {
            process.stdout.write(' Done.\n\nLet\'s create thte file...\n');
            writeTheFile(result);
        } else {
            process.stdout.write('\n');
            var myContext = {};
            myContext.cursor = resultMessage.hits.cursor;
            myContext.start = resultMessage.hits.start;
            myContext.found = resultMessage.hits.found;
            myContext.retrived = resultMessage.hits.hit.length;
            launchSearch(myContext);
        }
    });
}

function writeTheFile(myResult) {

    fs.writeFile(process.argv[2], JSON.stringify(myResult), function(err) {
        if(err) {
            return console.log(err);
        }
    });
    process.stdout.write("DONE : File '"+ process.argv[2] + "' generated  ( " + compteur + " elements ).\n");
}



 /*Check parameters*/
if (!process.argv[2]) {
     //console.log(process.argv);
    process.stdout.write('ERROR : the output filename is expected as argumment.\n');
    process.exit();
 } else {
    launchSearch();
}

var AWS=require（'AWS-sdk'）；
var fs=需要（'fs'）；
AWS.config.update({
accessKeyId:“”，secretAccessKey:“”，
区域：“”，终结点：“”
});
var batchSize=5000//每次搜索的项目数。。。最多：10000
var compteur=0；
var结果=[]；
var params={query:：}；
var cloudsearchdomain=new AWS.cloudsearchdomain（params）；
函数启动搜索（上下文）{
process.stdout.write（'Launch AWS.CloudSearch'）；
if（上下文==null）{
process.stdout.write（'initialrequest…'）；
}否则{
var current=（context.start/batchSize）+2；
var totalRun=（Math.ceil（context.found/batchSize*10）/10）+1；
process.stdout.write（'（'+current+'/'+totalRun+'）…）；
}
参数={
查询：“-aQueryStringImpossibleToFind”，
游标：（theContext==null）？“initial”：theContext.cursor，
大小：批量大小
};  
var forCursor=new AWS.CloudSearchDomain（params）；
搜索（参数，函数（错误，数据）{
如果（错误）{
log（“使用参数失败：”）；
控制台日志（err）；
}否则{
结果消息=数据；
compteur=compteur+data.hits.hit.length；
对于（var i=0；i来说，我刚刚修正了两件事，@Nek的反应得到了充分肯定


先决条件，节点+aws sdk插件
export-all.js
请注意，为了使用
return:“\u all_fields”
param获得完整转储，此字段必须在架构的索引选项中启用标志
return

var AWS = require('aws-sdk');
var fs = require('fs');

AWS.config.update({
        accessKeyId: 'xx',
        secretAccessKey: 'xx',
        region: 'xx',
        endpoint: 'xxx'
});

var batchSize = 10000;
var compteur = 0;
var result = [];
var resultMessage = [];

var params = {query:""};
var cloudsearchdomain = new AWS.CloudSearchDomain(params);

function launchSearch(theContext) {
    process.stdout.write('Launch AWS.CloudSearch ');

    if (theContext==null) {
        process.stdout.write('initial request ... ');
    } else {
        var current  = (theContext.start/batchSize) +2 ;
        var totalRun = (Math.ceil(theContext.found/batchSize  * 10) / 10) + 1;
        process.stdout.write('( ' + current + ' / ' + totalRun + ' )       ... ');
    }

// https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/CloudSearchDomain.html#search-property
params = {
    query:"matchall",
    cursor: (theContext==null)?"initial":theContext.cursor,
    size:batchSize,
    queryParser: "structured",
    return: "_all_fields"
};
 
    var forCursor = new AWS.CloudSearchDomain(params);

    forCursor.search(params, function(err, data) {
        if (err) {
            console.log("Failed with params :" );
            console.log(err);
        } else {
            resultMessage = data;
            compteur = compteur + data.hits.hit.length;
            for(var i=0;i<data.hits.hit.length;i++){
                result.push(data.hits.hit[i]);
                };
            }


        process.stdout.write(resultMessage.hits.hit.length + ' hits found.');

        if (resultMessage.hits.hit.length==0) {
            process.stdout.write(' Done.\n\nLet\'s create thte file...\n');
            writeTheFile(result);
        } else {
            process.stdout.write('\n');
            var myContext = {};
            myContext.cursor = resultMessage.hits.cursor;
            myContext.start = resultMessage.hits.start;
            myContext.found = resultMessage.hits.found;
            myContext.retrived = resultMessage.hits.hit.length;
            launchSearch(myContext);
        }
    });
}

function writeTheFile(myResult) {

    fs.writeFile(process.argv[2], JSON.stringify(myResult), function(err) {
        if(err) {
            return console.log(err);
        }
    });
    process.stdout.write("DONE : File '"+ process.argv[2] + "' generated  ( " + compteur + " elements ).\n");
}



 /*Check parameters*/
if (!process.argv[2]) {
     //console.log(process.argv);
    process.stdout.write('ERROR : the output filename is expected as argument.\n');
    process.exit();
 } else {
    launchSearch();
}  

这是什么版本的API？
var AWS = require('aws-sdk');
var fs = require('fs');

AWS.config.update({
        accessKeyId: 'xx',
        secretAccessKey: 'xx',
        region: 'xx',
        endpoint: 'xxx'
});

var batchSize = 10000;
var compteur = 0;
var result = [];
var resultMessage = [];

var params = {query:""};
var cloudsearchdomain = new AWS.CloudSearchDomain(params);

function launchSearch(theContext) {
    process.stdout.write('Launch AWS.CloudSearch ');

    if (theContext==null) {
        process.stdout.write('initial request ... ');
    } else {
        var current  = (theContext.start/batchSize) +2 ;
        var totalRun = (Math.ceil(theContext.found/batchSize  * 10) / 10) + 1;
        process.stdout.write('( ' + current + ' / ' + totalRun + ' )       ... ');
    }

// https://docs.aws.amazon.com/AWSJavaScriptSDK/latest/AWS/CloudSearchDomain.html#search-property
params = {
    query:"matchall",
    cursor: (theContext==null)?"initial":theContext.cursor,
    size:batchSize,
    queryParser: "structured",
    return: "_all_fields"
};
 
    var forCursor = new AWS.CloudSearchDomain(params);

    forCursor.search(params, function(err, data) {
        if (err) {
            console.log("Failed with params :" );
            console.log(err);
        } else {
            resultMessage = data;
            compteur = compteur + data.hits.hit.length;
            for(var i=0;i<data.hits.hit.length;i++){
                result.push(data.hits.hit[i]);
                };
            }


        process.stdout.write(resultMessage.hits.hit.length + ' hits found.');

        if (resultMessage.hits.hit.length==0) {
            process.stdout.write(' Done.\n\nLet\'s create thte file...\n');
            writeTheFile(result);
        } else {
            process.stdout.write('\n');
            var myContext = {};
            myContext.cursor = resultMessage.hits.cursor;
            myContext.start = resultMessage.hits.start;
            myContext.found = resultMessage.hits.found;
            myContext.retrived = resultMessage.hits.hit.length;
            launchSearch(myContext);
        }
    });
}

function writeTheFile(myResult) {

    fs.writeFile(process.argv[2], JSON.stringify(myResult), function(err) {
        if(err) {
            return console.log(err);
        }
    });
    process.stdout.write("DONE : File '"+ process.argv[2] + "' generated  ( " + compteur + " elements ).\n");
}



 /*Check parameters*/
if (!process.argv[2]) {
     //console.log(process.argv);
    process.stdout.write('ERROR : the output filename is expected as argument.\n');
    process.exit();
 } else {
    launchSearch();
}  

$ node export-all.js all-data.json