50 lines
		
	
	
		
			1002 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			50 lines
		
	
	
		
			1002 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
// for Node.js interpret
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const mongodb = require("../../../built/db/mongodb");
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const Post = mongodb.default.get('posts');
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const { default: zip } = require('@prezzemolo/zip')
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const migrate = async (post) => {
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	const result = await Post.update(post._id, {
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		$set: {
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			'geo.type': 'Point',
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			'geo.coordinates': [post.geo.longitude, post.geo.latitude]
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		},
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		$unset: {
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			'geo.longitude': '',
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			'geo.latitude': '',
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		}
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	});
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	return result.ok === 1;
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}
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async function main() {
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	const count = await Post.count({
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		'geo': { $ne: null }
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	});
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	const dop = Number.parseInt(process.argv[2]) || 5
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	const idop = ((count - (count % dop)) / dop) + 1
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	return zip(
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		1,
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		async (time) => {
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			console.log(`${time} / ${idop}`)
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			const doc = await Post.find({
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				'geo': { $ne: null }
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			}, {
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				limit: dop, skip: time * dop
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			})
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			return Promise.all(doc.map(migrate))
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		},
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		idop
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	).then(a => {
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		const rv = []
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		a.forEach(e => rv.push(...e))
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		return rv
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	})
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}
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main().then(console.dir).catch(console.error)
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