Ghost/core/server/models/email-recipient.js

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Store email batch and recipient records when sending newsletters (#12195) requires https://github.com/TryGhost/Ghost/pull/12192 - added initial `EmailBatch` and `EmailRecipient` model definitions with defaults and relationships - added missing `post` relationship function to email model - fetch member list without bookshelf - bookshelf can add around 3x overhead when fetching the members list for an email - we don't need full members at this point, only having the data is fine - if we need full models later on we can push the model hydration into background jobs where recipient batches are fetched ready for an email to be sent - bookshelf model instantiation of many models blocks the event loop, using knex directly keeps concurrent requests fast - adds `getFilteredCollectionQuery` method to base model to facilitate getting a knex query based on our normal model filters along with transaction/forUpdate applied - store recipient list before sending email - chunk already-fetched members list into batches and insert records into the `email_recipients` table via knex - chunked into batches of 1000 to match the number of emails that Mailgun accepts in a single API request but this may not be the absolute fastest batch size for recipient insertion: | Batch size | Batch time | Total time | | ---------- | ---------- | ---------- | | 500 | 20ms | 4142ms | | 1000 | 50ms | 4651ms | | 5000 | 170ms | 3540ms | | 10000 | 370ms | 3684ms | - create an email_batch record before inserting recipient rows so we can effeciently fetch recipients by batch and store the overall batch status
2020-09-14 17:40:00 +03:00
const ghostBookshelf = require('./base');
const EmailRecipient = ghostBookshelf.Model.extend({
tableName: 'email_recipients',
hasTimestamps: false,
email() {
return this.belongsTo('Email', 'email_id');
},
emailBatch() {
return this.belongsTo('EmailBatch', 'batch_id');
},
member() {
return this.belongsTo('Member', 'member_id');
}
});
const EmailRecipients = ghostBookshelf.Collection.extend({
model: EmailRecipient
});
module.exports = {
EmailRecipient: ghostBookshelf.model('EmailRecipient', EmailRecipient),
EmailRecipients: ghostBookshelf.model('EmailRecipients', EmailRecipients)
};