Class: Mackerel::Client

Inherits:
Object
  • Object
show all
Defined in:
lib/mackerel/client.rb

Constant Summary collapse

ERROR_MESSAGE_FOR_API_KEY_ABSENCE = 
"API key is absent. Set your API key in a environment variable called MACKEREL_APIKEY."

Instance Method Summary collapse

Constructor Details

#initialize(args = {}) ⇒ Client

Returns a new instance of Client.



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# File 'lib/mackerel/client.rb', line 13

def initialize(args = {})
  @origin  = args[:mackerel_origin] || 'https://mackerel.io'
  @api_key = args[:mackerel_api_key] || raise(ERROR_MESSAGE_FOR_API_KEY_ABSENCE)
end

Instance Method Details

#get_host(host_id) ⇒ Object 



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# File 'lib/mackerel/client.rb', line 18

def get_host(host_id)
  response = client.get "/api/v0/hosts/#{host_id}" do |req|
    req.headers['X-Api-Key'] = @api_key
  end

  unless response.success?
    raise "GET /api/v0/hosts/#{host_id} failed: #{response.status}"
  end

  data = JSON.parse(response.body)
  Host.new(data['host'])
end

#get_hosts(opts = {}) ⇒ Object 



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# File 'lib/mackerel/client.rb', line 107

def get_hosts(opts = {})
  response = client.get '/api/v0/hosts.json' do |req|
    req.headers['X-Api-Key'] = @api_key
    req.params['service']    = opts[:service] if opts[:service]
    req.params['role']       = opts[:roles]   if opts[:roles]
    req.params['name']       = opts[:name]    if opts[:name]
  end

  unless response.success?
    raise "GET /api/v0/hosts.json failed: #{response.status}"
  end

  data = JSON.parse(response.body)
  data['hosts'].map{ |host_json| Host.new(host_json) }
end

#get_latest_metrics(hostIds, names) ⇒ Object 



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# File 'lib/mackerel/client.rb', line 77

def get_latest_metrics(hostIds, names)
  query = (hostIds.map{ |hostId| "hostId=#{hostId}" } +
           names.map{ |name| "name=#{name}" }).join('&')

  response = client.get "/api/v0/tsdb/latest?#{query}" do |req|
    req.headers['X-Api-Key'] = @api_key
  end

  unless response.success?
    raise "/api/v0/tsdb/latest?#{query} failed: #{response.status}"
  end

  data = JSON.parse(response.body)
  data["tsdbLatest"]
end

#post_metrics(metrics) ⇒ Object 



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# File 'lib/mackerel/client.rb', line 63

def post_metrics(metrics)
  response = client.post '/api/v0/tsdb' do |req|
    req.headers['X-Api-Key'] = @api_key
    req.headers['Content-Type'] = 'application/json'
    req.body = metrics.to_json
  end

  unless response.success?
    raise "POST /api/v0/tsdb failed: #{response.status}"
  end

  data = JSON.parse(response.body)
end

#post_service_metrics(service_name, metrics) ⇒ Object 



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# File 'lib/mackerel/client.rb', line 93

def post_service_metrics(service_name, metrics)
  response = client.post "/api/v0/services/#{service_name}/tsdb" do |req|
    req.headers['X-Api-Key'] = @api_key
    req.headers['Content-Type'] = 'application/json'
    req.body = metrics.to_json
  end

  unless response.success?
    raise "POST /api/v0/services/#{service_name}/tsdb failed: #{response.status}"
  end

  data = JSON.parse(response.body)
end

#retire_host(host_id) ⇒ Object 



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# File 'lib/mackerel/client.rb', line 49

def retire_host(host_id)
  response = client.post "/api/v0/hosts/#{host_id}/retire" do |req|
    req.headers['X-Api-Key'] = @api_key
    req.headers['Content-Type'] = 'application/json'
    req.body = { }.to_json
  end

  unless response.success?
    raise "POST /api/v0/hosts/#{host_id}/retire failed: #{response.status}"
  end

  data = JSON.parse(response.body)
end

#update_host_status(host_id, status) ⇒ Object 



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# File 'lib/mackerel/client.rb', line 31

def update_host_status(host_id, status)
  unless [:standby, :working, :maintenance, :poweroff].include?(status.to_sym)
    raise "no such status: #{status}"
  end

  response = client.post "/api/v0/hosts/#{host_id}/status" do |req|
    req.headers['X-Api-Key'] = @api_key
    req.headers['Content-Type'] = 'application/json'
    req.body = { "status" => status }.to_json
  end

  unless response.success?
    raise "POST /api/v0/hosts/#{host_id}/status failed: #{response.status}"
  end

  data = JSON.parse(response.body)
end