Created
November 26, 2016 01:45
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Trying to replicate pouchdb/pouchdb#5943
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<!DOCTYPE html> | |
<html> | |
<head> | |
<script src="//cdn.jsdelivr.net/pouchdb/6.0.7/pouchdb.js"></script> | |
<script src="//cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore.js"></script> | |
</head> | |
<body> | |
<button onclick="seed()">Seed the database with 10000 docs</button><br> | |
<button onclick="recreate()">Destroy and recreate database</button><br> | |
<button onclick="verifyDocs()">Verify 10000 docs exist</button><br> | |
<button onclick="startReplication()">Start sync with remote DB</button> | |
<script> | |
create(); // initialize | |
var db, sync; | |
function create() { | |
db = new PouchDB('my_database', { | |
size: 50 | |
}); | |
} | |
function seed() { | |
return db.bulkDocs(_.range(10000).map(number => { | |
return { | |
_id: `doc_${number}` | |
}; | |
})) | |
.then(res => { | |
var error = _.find(res, d => d.error); | |
if (error) { | |
console.log('⚠️ Seed unsuccessful'); | |
} else { | |
console.log('✅ Seed successful'); | |
} | |
}) | |
.catch(e => { | |
console.log('⚠️ Seed NOT successful!'); | |
}); | |
} | |
function recreate() { | |
if (sync) { | |
sync.cancel(); | |
} | |
return db.destroy() | |
.then(create) | |
.then(() => { | |
console.log('✅ Recreation successful'); | |
}) | |
.catch(e => { | |
console.log('⚠️ Recreation NOT successful!'); | |
}); | |
} | |
function verifyDocs() { | |
return db.allDocs({ | |
startkey: `doc_`, | |
endkey: `doc_\uffff`, | |
include_docs: true | |
}) | |
.then(({ rows }) => { | |
if (rows.length !== 10000) { | |
console.log(`⚠️ Document row count not 10000! Got ${rows.length}.`); | |
} else { | |
console.log(`✅ Successfully got all rows.`); | |
} | |
}) | |
.catch(e => { | |
console.log('⚠️ Something went wrong getting docs!'); | |
}); | |
} | |
function startReplication() { | |
sync = db.sync('http://localhost/db/my_database', { | |
live: true, | |
retry: true, | |
batch_size: 500 | |
}) | |
.on('change', function (info) { | |
console.log('Syncing...'); | |
}) | |
.on('paused', function () { | |
// user went offline | |
console.log('✅ Completed sync'); | |
verifyDocs(); | |
}) | |
.on('active', function () { | |
console.log('Syncing...'); | |
// replicate resumed (e.g. user went back online) | |
}) | |
.on('denied', function (info) { | |
console.log('⚠️ Denied!'); | |
// a document failed to replicate (e.g. due to permissions) | |
}) | |
.on('complete', function (info) { | |
console.log('⚠️ Error! Complete!'); | |
// handle complete | |
}) | |
.on('error', function (err) { | |
console.log('⚠️ Error!'); | |
// handle error | |
}); | |
} | |
</script> | |
</body> | |
</html> |
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