Fcmpush

Fcmpush is an Firebase Cloud Messaging(FCM) Client. It implements FCM HTTP v1 API, including Auto Refresh access_token feature, and batch request!! This gem supports HTTP v1 API only, NOT supported legacy HTTP protocol.

fcmpush is highly inspired by andpush gem.

Installation

Add this line to your application's Gemfile:

gem 'fcmpush'

And then execute:

$ bundle

Or install it yourself as:

$ gem install fcmpush

Usage

on Rails, config/initializers/fcmpush.rb

Fcmpush.configure do |config|
  ## for message push
  # firebase web console => project settings => service account => firebase admin sdk => generate new private key

  # pass string of path to credential file to config.json_key_io
  config.json_key_io = "#{Rails.root}/path/to/service_account_credentials.json"
  # Or content of json key file wrapped with StringIO
  # config.json_key_io = StringIO.new('{ ... }')

  # Or set environment variables
  # ENV['GOOGLE_ACCOUNT_TYPE'] = 'service_account'
  # ENV['GOOGLE_CLIENT_ID'] = '000000000000000000000'
  # ENV['GOOGLE_CLIENT_EMAIL'] = '[email protected]'
  # ENV['GOOGLE_PRIVATE_KEY'] = '-----BEGIN PRIVATE KEY-----\n...\n-----END PRIVATE KEY-----\n\'

  ## for topic subscribe/unsubscribe because they use regacy auth
  # firebase web console => project settings => cloud messaging => Project credentials => Server key
  # @deprecated: This attribute will be removed next version.
  config.server_key = 'your firebase server key'
  # Or set environment variables
  # @deprecated: This attribute will be removed next version.
  # ENV['FCM_SERVER_KEY'] = 'your firebase server key'

  # Proxy ENV variables are considered by default if set by net/http, but you can explicitly define your proxy host here
  # user and password are optional
  # config.proxy = { uri: "http://proxy.host:3128", user: nil, password: nil }
  # explicitly disable using proxy, even ignore environment variables if set
  # config.proxy = false

  # HTTP connection open and read timeouts (in seconds) are set for all client requests.
  # If unset, the default values for Net::HTTP::Persistent are used (currently 60 seconds).
  # config.open_timeout = 30
  # config.read_timeout = 15
end

for more detail. see here.

push message

require 'fcmpush'

project_id   = "..." # Your project_id
device_token = "..." # The device token of the device you'd like to push a message to

client  = Fcmpush.new(project_id)
payload = { # ref. https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages
  message: {
    token: device_token,
    notification: {
      title: "this is title",
      body: "this is message body"
    }
  }
}

response = client.push(payload)

json = response.json
json[:name] # => "projects/[your_project_id]/messages/0:1571037134532751%31bd1c9631bd1c96"

push messages in batch [DEPRECATED]

require 'fcmpush'

project_id   = "..." # Your project_id
device_tokens = ["...A", "...B", "...C"] # The device token of the device you'd like to push a message to

client  = Fcmpush.new(project_id)

payloads = device_tokens.map do |token|
  { # ref. https://firebase.google.com/docs/reference/fcm/rest/v1/projects.messages
    message: {
      token: token,
      notification: {
        title: "this is title",
        body: "this is message body"
      }
    }
  }
end

response = client.batch_push(payloads)

response_array = response.json
response_array.first[:name] # => "projects/[your_project_id]/messages/0:1571037134532751%31bd1c9631bd1c96"

topic subscribe/unsubscribe

require 'fcmpush'

project_id   = "..." # Your project_id
topic = "your_topic_name"
device_tokens = ["device_tokenA", "device_tokenB", ...] # The device tokens of the device you'd like to subscribe

client  = Fcmpush.new(project_id)

response = client.subscribe(topic, device_tokens)
# response = client.unsubscribe(topic, device_tokens)

json = response.json
json[:results] # => [{}, {"error":"NOT_FOUND"}, ...]  ref. https://developers.google.com/instance-id/reference/server#example_result_3

Performance

• fcmpush's performance is good. (about the same as fastest one!)
• And fcmpush supports batch request feature! batch request not use in benchmarking. Because, it not supported by other gems.
• andpush is the fastest, but it uses legacy HTTP API.
• fcmpush is fastest in gems using V1 HTTP API(fcmpush, google-api-fcm, firebase_cloud_messenger).
• I excluded google-api-fcm gem because it can't run in ruby 3.
• benchmark detail is here.

Warming up --------------------------------------
             andpush     1.000  i/100ms
                 fcm     1.000  i/100ms
             fcmpush     1.000  i/100ms
firebase_cloud_messenger
                         1.000  i/100ms
Calculating -------------------------------------
             andpush     19.236  (±10.4%) i/s -     95.000  in   5.048723s
                 fcm      6.536  (±15.3%) i/s -     33.000  in   5.083179s
             fcmpush     18.871  (±10.6%) i/s -     93.000  in   5.031072s
firebase_cloud_messenger
                          3.238  (± 0.0%) i/s -     17.000  in   5.265755s

Comparison:
             andpush:       19.2 i/s
             fcmpush:       18.9 i/s - same-ish: difference falls within error
                 fcm:        6.5 i/s - 2.94x  (± 0.00) slower
firebase_cloud_messenger:        3.2 i/s - 5.94x  (± 0.00) slower

Experimental Features

• proxy
  • LIMITATION: support http_proxy only. NOT supports HTTPS_PROXY.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/miyataka/fcmpush.

License

The gem is available as open source under the terms of the MIT License.