Class: EventStoreClient::StoreAdapter::Api::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/event_store_client/store_adapter/api/client.rb

Constant Summary collapse

WrongExpectedEventVersion = 
Class.new(StandardError)

Instance Method Summary collapse

Instance Method Details

#ack(url) ⇒ Object 



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# File 'lib/event_store_client/store_adapter/api/client.rb', line 155

def ack(url)
  make_request(:post, url)
end

#append_to_stream(stream_name, events, expected_version: nil) ⇒ Object 



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# File 'lib/event_store_client/store_adapter/api/client.rb', line 9

def append_to_stream(stream_name, events, expected_version: nil)
  serialized_events = events.map { |event| mapper.serialize(event) }
  headers = {
    'ES-ExpectedVersion' => expected_version&.to_s
  }.reject { |_key, val| val.nil? || val.empty? }

  data = build_events_data(serialized_events)
  response = make_request(:post, "/streams/#{stream_name}", body: data, headers: headers)
  validate_response(response, expected_version)
  response
  serialized_events
end

#consume_feed(stream_name, subscription_name, count: 1, long_poll: 0, resolve_links: true, per_page: 20) ⇒ Object 



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# File 'lib/event_store_client/store_adapter/api/client.rb', line 107

def consume_feed(
  stream_name,
  subscription_name,
  count: 1,
  long_poll: 0,
  resolve_links: true,
  per_page: 20
)
  headers = long_poll.positive? ? { 'ES-LongPoll' => long_poll.to_s } : {}
  headers['Content-Type'] = 'application/vnd.eventstore.competingatom+json'
  headers['Accept'] = 'application/vnd.eventstore.competingatom+json'
  headers['ES-ResolveLinktos'] = resolve_links.to_s

  response = make_request(
    :get,
    "/subscriptions/#{stream_name}/#{subscription_name}/#{count}",
    headers: headers
  )

  return { events: [] } if response.body || response.body.empty?

  body = JSON.parse(response.body)

  ack_info = body['links'].find { |link| link['relation'] == 'ackAll' }
  return unless ack_info
  ack_uri = ack_info['uri']
  events = body['entries'].map do |entry|
    deserialize_event(entry)
  end
  { ack_uri: ack_uri, events: events }
end

#delete_stream(stream_name, hard_delete: false) ⇒ Object 



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# File 'lib/event_store_client/store_adapter/api/client.rb', line 22

def delete_stream(stream_name, hard_delete: false)
  headers = {
    'ES-HardDelete' => hard_delete.to_s
  }.reject { |_key, val| val.empty? }

  make_request(:delete, "/streams/#{stream_name}", body: {}, headers: headers)
end

#join_streams(name, streams) ⇒ Object 



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# File 'lib/event_store_client/store_adapter/api/client.rb', line 71

def join_streams(name, streams)
  data = "    fromStreams(\#{streams})\n    .when({\n      $any: function(s,e) {\n        linkTo(\"\#{name}\", e)\n      }\n    })\n  STRING\n\n  make_request(\n    :post,\n    \"/projections/continuous?name=\#{name}&type=js&enabled=true&emit=true%26trackemittedstreams=true\", # rubocop:disable Metrics/LineLength\n    body: data,\n    headers: {}\n  )\nend\n"

#link_to(stream_name, events, expected_version: nil) ⇒ Object 



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# File 'lib/event_store_client/store_adapter/api/client.rb', line 139

def link_to(stream_name, events, expected_version: nil)
  data = build_linkig_data(events)
  headers = {
    'ES-ExpectedVersion' => expected_version&.to_s
  }.reject { |_key, val| val.nil? || val.empty? }

  response = make_request(
    :post,
    "/streams/#{stream_name}",
    body: data,
    headers: headers
  )
  validate_response(response, expected_version)
  true
end

#read(stream_name, direction: 'forward', start: 0, count: per_page, resolve_links: true) ⇒ Object 



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# File 'lib/event_store_client/store_adapter/api/client.rb', line 30

def read(stream_name, direction: 'forward', start: 0, count: per_page, resolve_links: true)
  headers = {
    'ES-ResolveLinkTos' => resolve_links.to_s,
    'Accept' => 'application/vnd.eventstore.atom+json'
  }

  response = make_request(
    :get,
    "/streams/#{stream_name}/#{start}/#{direction}/#{count}",
    headers: headers
  )
  return [] if response.body.nil? || response.body.empty?
  JSON.parse(response.body)['entries'].map do |entry|
    deserialize_event(entry)
  end.reverse
end

#read_all_from_stream(stream, direction: 'forward', start: 0, resolve_links: true) ⇒ Object 



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# File 'lib/event_store_client/store_adapter/api/client.rb', line 47

def read_all_from_stream(stream, direction: 'forward', start: 0, resolve_links: true)
  count = per_page
  events = []
  failed_requests_count = 0

  while failed_requests_count < 3
    begin
      response =
        read(stream, start: start, direction: direction, resolve_links: resolve_links)
      failed_requests_count += 1 && next unless response.success? || response.status == 404
    rescue Faraday::ConnectionFailed
      failed_requests_count += 1
      next
    end
    failed_requests_count = 0
    break if response.body.nil? || response.body.empty?
    entries = JSON.parse(response.body)['entries']
    break if entries.empty?
    events += entries.map { |entry| deserialize_event(entry) }.reverse
    start += count
  end
  events
end

#subscribe_to_stream(stream_name, subscription_name, stats: true, start_from: 0, retries: 5) ⇒ Object 



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# File 'lib/event_store_client/store_adapter/api/client.rb', line 89

def subscribe_to_stream(
  stream_name, subscription_name, stats: true, start_from: 0, retries: 5
)
  make_request(
    :put,
    "/subscriptions/#{stream_name}/#{subscription_name}",
    body: {
      extraStatistics: stats,
      startFrom: start_from,
      maxRetryCount: retries,
      resolveLinkTos: true
    },
    headers: {
      'Content-Type' => 'application/json'
    }
  )
end