lorensr

hcp-repro $ meteor run android-device --mobile-server "192.168.0.189:3000"
[[[[[ ~/jobs/hcp-repro ]]]]]

=> Started proxy.
WARNING: Attempting to install plugin [email protected], but it should have a minimum version of 2.3.0 to ensure compatibility with the
         current platform versions. Installing the minimum version for convenience, but you should adjust your dependencies.
WARNING: Attempting to install plugin [email protected], but it should have a minimum version of 4.1.0 to ensure compatibility with the
         current platform versions. Installing the minimum version for convenience, but you should adjust your dependencies.
=> Started MongoDB.
Subproject Path: CordovaLibns                [===========                ] 40% 8.4s

lorensr

=> App running at: http://localhost:3000/
=> Started app on Android Device.
I20190113-01:03:51.333(1)? I/CordovaLog(29528): Changing log level to DEBUG(3)
I20190113-01:03:51.364(1)? I/chromium(29528): [INFO:library_loader_hooks.cc(36)] Chromium logging enabled: level = 0, default verbosity = 0
I20190113-01:03:51.364(1)? W/MeteorWebApp(29528): Loading asset bundle from directory file:///android_asset/www/application
I20190113-01:03:51.364(1)? W/MeteorWebApp(29528): Asset / found in bundle b96242b11ac30d186162794a8281039a4c641e89:file:///android_asset/www/application
I20190113-01:03:51.364(1)? W/MeteorWebApp(29528): Asset /__cordova/merged-stylesheets.css found in bundle b96242b11ac30d186162794a8281039a4c641e89:file:///android_asset/www/application
I20190113-01:03:51.364(1)? W/MeteorWebApp(29528): Asset /cordova.js not found in bundle b96242b11ac30d186162794a8281039a4c641e89:file:///android_asset/www/application, no parent bundle
I20190113-01:03:51.365(1)? W/MeteorWebApp(29528): Asset /__cordova/packages/meteor

lorensr

import { DataSource } from 'apollo-datasource'
import { InMemoryLRUCache } from 'apollo-server-caching'
import DataLoader from 'dataloader'

class FooDataSource extends DataSource {
  constructor(dbClient) {
    super()
    this.db = dbClient
    this.loader = new DataLoader(ids => dbClient.getByIds(ids))
  }

lorensr

import { DataSource } from 'apollo-datasource'
import DataLoader from 'dataloader'

class FooDataSource extends DataSource {
  constructor(dbClient) {
    super()
    this.db = dbClient
    this.loader = new DataLoader(ids => dbClient.getByIds(ids))
  }

lorensr

import { InMemoryLRUCache } from 'apollo-server-caching'

...

  initialize({ context, cache } = {}) {
    this.context = context
    this.cache = cache || new InMemoryLRUCache()
  }

lorensr

  didEncounterError(error) {
    throw error
  }

lorensr

  cacheKey(id) {
    return `foo-${this.db.connectionURI}-${id}`
  }

lorensr

  async get(id, { ttlInSeconds } = {}) {
    const cacheDoc = await cache.get(this.cacheKey(id))
    if (cacheDoc) {
      return JSON.parse(cacheDoc)
    }

    const doc = await this.loader.load(id)

    if (ttlInSeconds) {
      cache.set(this.cacheKey(id), JSON.stringify(doc), { ttl: ttlInSeconds })

lorensr

  async update(id, newDoc) {
    try {
      await this.db.update(id, newDoc)
      this.cache.delete(this.cacheKey(id))
    } catch (error) {
      this.didEncounterError(error)
    }
  }

lorensr

import FooDataSource from './FooDataSource'
import { reportError } from './utils'

export default class MyFooDB extends FooDataSource {
  async updateFields(id, fields) {
    const doc = await this.get(id)
    return this.update(id, {
      ...doc,
      ...fields
    })