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migrate-20151114.js
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'use strict';
let elasticsearch = require('elasticsearch');
let _ = require('lodash');
let client = new elasticsearch.Client({
host: 'localhost:9200',
apiVersion: '1.2',
log: 'trace'
});
let search = function (query) {
return client.search(query)
.then(function (data) {
return _.map(data.hits.hits, function (hit) {
return _.assign(hit._source, {
id: hit._id
});
});
});
};
let create = function (query) {
return client.create(query);
};
let createIndex = function (query) {
return client.indices.create(query);
};
let deleteIndex = function (query) {
return client.indices.delete(query);
};
let createIngredients = function (index, newIngredients) {
return Promise.all(_.map(newIngredients, function (newIngredient) {
return create({
index: index,
type: 'ingredient',
body: newIngredient
})
}))
.then(function (data) {
let createdIngredients = _(newIngredients)
.zip(data)
.map(function (ingredientParts) {
return _.assign(ingredientParts[0], {
id: ingredientParts[1]._id
});
})
.value();
return createdIngredients;
});
};
let createIngredientsAndCatagories = function (oldIndex, newIndex) {
return search({
index: oldIndex,
type: 'category',
size: 500,
body: {
query: {
match_all: {}
}
}
})
.then(function (hits) {
let newIngredients = _(hits)
.map('items')
.flatten()
.map(function (name) {
return {
name: name
};
})
.value();
return createIngredients(newIndex, newIngredients)
.then(function (data) {
let ingredientsByName = _.indexBy(data, 'name');
let newCategories = _.map(hits, function (oldCategory) {
return {
name: oldCategory.name,
order: oldCategory.order,
ingredient_ids: _.map(oldCategory.items, function (item) {
return ingredientsByName[item].id;
})
};
});
return Promise.all(_.map(newCategories, function (newCategory) {
return create({
index: newIndex,
type: 'category',
body: newCategory
})
}));
});
});
};
let createRecipes = function (oldIndex, newIndex) {
return Promise.all([
search({
index: oldIndex,
type: 'recipe',
size: 500,
body: {
query: {
match_all: {}
}
}
}),
search({
index: newIndex,
type: 'ingredient',
size: 500,
body: {
query: {
match_all: {}
}
}
})
])
.then(function (data) {
let oldRecipes = data[0];
let ingredients = data[1];
let recipeIngredientNames = _(oldRecipes)
.map(function (oldRecipe) {
return _.map(oldRecipe.ingredients, 'item');
})
.flatten()
.uniq()
.value();
let existingIngredientNames = _.map(ingredients, 'name');
let newIngredientNames = _.difference(recipeIngredientNames, existingIngredientNames);
let newIngredients = _.map(newIngredientNames, function (newIngredientName) {
return {
name: newIngredientName
};
});
return createIngredients(newIndex, newIngredients)
.then(function (data) {
let ingredientsByName = _.indexBy(ingredients, 'name');
let createdIngredientsByName = _.indexBy(data, 'name');
ingredientsByName = _.merge(ingredientsByName, createdIngredientsByName);
let newRecipes = _.map(oldRecipes, function (oldRecipe) {
return {
name: oldRecipe.name,
original_text: oldRecipe.originalText,
recipe_ingredients: _.map(oldRecipe.ingredients, function (ingredient) {
return {
ingredient_id: ingredientsByName[ingredient.item].id,
amount: ingredient.amount
};
})
};
});
return Promise.all(_.map(newRecipes, function (newRecipe) {
return create({
index: newIndex,
type: 'recipe',
body: newRecipe
})
}));
});
});
};
let srcIndex = 'ashlea';
let destIndex = 'ashlea2';
// Migrate categories and create ingredients in the process
/*deleteIndex({index: destIndex})
.then(function () {
return createIndex({index: destIndex});
})*/
createIndex({index: destIndex})
.then(function () {
return createIngredientsAndCatagories(srcIndex, destIndex);
})
.then(function () {
setTimeout(function () {
return createRecipes(srcIndex, destIndex);
}, 1000);
})
.catch(function (error) {
console.error(error);
});