如何使用 elastic.js 获取弹性搜索的所有索引？

Question

使用我的 Angular 应用程序，我需要在弹性搜索中显示所有索引。我可以使用文档查询特定索引，但无法获取弹性搜索中的所有索引。

这里是Documentation

这是我的代码：

$scope.getallIndex = function(){
         $scope.Indexes =  ejs.Request().query(ejs.MatchAllQuery()
            .doSearch().then(function (body) {
         $scope.Indexes = body.hits.hits;
          console.log($scope.Indexes);       
        }

Answer 1

  const indices = await client.cat.indices({format: 'json'})

Answer 2

我正在使用 elasticsearch.js，它是用于 Elastic Search 的浏览器构建，可以在浏览器中使用。请参阅link 。我维护了一个工厂：

 .factory('ElasticService', [ 'esFactory', function (elasticsearch) {
    var client = elasticsearch({
      host: ip + ':' + port,
    });  

client.cat.indices("b",function(r,q){
  console.log(r,q);
}) }]);

这将返回所有索引。完整配置请参阅link。

编辑： 下面是从特定索引中检索数据的完整工厂。

 .factory('ElasticService', ['$q', 'esFactory', '$location', function ($q, elasticsearch, $location) {
var client = elasticsearch({
  host: ip + ':' + port
});


var search = function (index, body) {
  var deferred = $q.defer();
  client.search({
    index: index,
    type: type,
    body: body
  }).then(function (result) {
    var took = result.took;
    var size = result.hits.total;
    var ii = 0, hits_in, hits_out = [],aggs = [], highlight = [];
    hits_in = (result.hits || {}).hits || [];
    /* For the timebeing i have maintained this variable to save the aggregations */
    aggs = result.aggregations;
    for (; ii < hits_in.length; ii++) {
      hits_in[ii].fields.id = hits_in[ii]._id;
      hits_out.push(hits_in[ii].fields);
      // hits_out[hits_in[ii]._id]=hits_in[ii].fields: use this method if you wanna keep _id as the index

      // if there is a highlight coming along with the data we add a field highlight and push it to built an array
      if (hits_in[ii].highlight) {
        highlight.push(hits_in[ii].highlight);
      }
    }
    if (highlight.length) {
      deferred.resolve({hits: hits_out, highlight: highlight,aggs:aggs, size: size, took: took});
    }
    else {
      deferred.resolve({hits: hits_out, size: size,aggs:aggs, took: took});
    }

  }, deferred.reject);
  return deferred.promise;
};
return {search: search};  }]);

所以控制器可以使用这个工厂从特定索引中获取数据

  ElasticService.search('<index>', <query>).then(function (resp) {
    // resp has the content
  });

Answer 3

我在 javascript 中进行了如下查询，它返回了我的索引列表

client.cat.indices({
  h: ['index']
}).then(function (body) {
  console.log(body);
});

Answer 4

elasticsearch JS API 有一个查询实例上所有索引的方法：https://www.elastic.co/guide/en/elasticsearch/client/javascript-api/current/api-reference.html#api-cat-indices

唯一的问题是它并没有真正以可读的 JSON 格式返回给您。所以我最终做的是类似以下的事情

client.cat.indices({
  h: ['index', 'docs.count']
}).then(function (body) {
  let lines = body.split('\n');
  let indices = lines.map(function (line) {
    let row = line.split(' ');
    return {name: row[0], count: row[1]};
  });
  indices.pop(); //the last line is empty by default
});