class Etcdv3::Watch

Public Class Methods

new(hostname, credentials, timeout, metadata = {}) click to toggle source
# File lib/etcdv3/watch.rb, line 5
def initialize(hostname, credentials, timeout, metadata = {})
  @stub = Etcdserverpb::Watch::Stub.new(hostname, credentials)
  @timeout = timeout
  @metadata = metadata
end

Public Instance Methods

deadline(timeout) click to toggle source
# File lib/etcdv3/watch.rb, line 29
def deadline(timeout)
  from_relative_time(timeout || @timeout)
end
watch(key, range_end, start_revision, block, timeout: nil) click to toggle source
# File lib/etcdv3/watch.rb, line 11
def watch(key, range_end, start_revision, block, timeout: nil)
  create_req = Etcdserverpb::WatchCreateRequest.new(key: key)
  create_req.range_end = range_end if range_end
  create_req.start_revision = start_revision if start_revision
  watch_req = Etcdserverpb::WatchRequest.new(create_request: create_req)
  events = nil
  @stub.watch([watch_req], metadata: @metadata, deadline: deadline(timeout)).each do |resp|
    next if resp.events.empty?
    if block
      block.call(resp.events)
    else
      events = resp.events
      break
    end
  end
  events
end