ductile/lib/mappings.js

Elasticsearch Bulk Loader

// Generated by CoffeeScript 1.11.1
(function() {
  var flatten, jsonStream, mixin, through2, toBulk;

  through2 = require('through2');

  mixin = require('./mixin');

  flatten = function(a) {
    return [].concat.apply([], a);
  };

  toBulk = function() {
    return through2.obj(function(doc, enc, callback) {
      this.push({
        mapping: doc
      });
      return callback();
    });
  };

  jsonStream = function() {
    return through2.obj(function(chunk, enc, callback) {
      this.push(JSON.stringify(chunk) + "\n");
      return callback();
    });
  };

  module.exports = function(client, _opts) {
    var exec, instream, opts, sink, stream;
    opts = mixin(_opts);
    instream = toBulk();
    sink = instream.write.bind(instream);
    exec = function() {
      return client.indices.getMapping(opts).then(function(v) {
        var index, mapping, mappings, results, type;
        results = [];
        for (index in v) {
          mappings = v[index].mappings;
          results.push((function() {
            var results1;
            results1 = [];
            for (type in mappings) {
              mapping = mappings[type];
              results1.push({
                _index: index,
                _type: type,
                _mapping: mapping
              });
            }
            return results1;
          })());
        }
        return results;
      }).then(flatten);
    };
    exec().then(function(docs) {
      return docs.forEach(sink);
    })["catch"](function(err) {
      return stream.emit('error', err);
    });
    return stream = instream.pipe(jsonStream());
  };

}).call(this);

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