Class: Sabisu::Server::Event

Inherits:
Object
  • Object
show all
Defined in:
lib/sabisu/event.rb

Overview

class for sensu events

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(fields) ⇒ Event

takes a hash and maps it to the fields defined in FIELDS



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# File 'lib/sabisu/event.rb', line 162

def initialize(fields)
  fields.each { |k, v| send("#{k}=", v) } if fields
end

Class Method Details

.all(options = {}) ⇒ Object

return all docs



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# File 'lib/sabisu/event.rb', line 7

def self.all(options = {})
  options = { skip: 0, limit: nil, sort: [] }.merge(options)
  options.delete_if { |k, v| v.nil? || v == [] }

  CURRENT_DB.all_docs(options.merge(include_docs: true, start_key: '"a"'))
end

.clear_events(events) ⇒ Object 



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# File 'lib/sabisu/event.rb', line 133

def self.clear_events(events)
  events.each do |event|
    puts "Deleting #{event[:client]}/#{event[:check]}"
    begin
      doc = CURRENT_DB.get("#{event[:client]}/#{event[:check]}")
      doc.destroy
    rescue RestClient::Conflict
      # there been a conflict, ignore
      puts 'doc conflict'
    rescue RestClient::ResourceNotFound
      # looks like its already deleted, noop
      puts 'doc not found'
    end
  end
end

.search(query, options = {}) ⇒ Object

Example: Event.search(“client:cheftest* AND status:1”, :bookmark => ‘ABCD36’,

:limit => 10,
:sort => [ 'status<string>', '-client<string>', '-issued<number>' ])



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# File 'lib/sabisu/event.rb', line 17

def self.search(query, options = {})
  # define facet range params for status attribute
  ranges = { status: {} }
  ranges[:status][:OK] = '[0 TO 0]'
  ranges[:status][:Warning] = '[1 TO 1]'
  ranges[:status][:Critical] = '[2 TO 2]'
  ranges[:status][:Unknown] = '[3 TO 3]'
  # define facet count param
  counts = FIELDS.map do |field|
    field[:name] if field.key?(:facet) && field[:facet] == true
  end.compact
  options = {
    bookmark: nil,
    limit: nil,
    sort: [],
    include_docs: true,
    ranges: ranges.to_json,
    counts: counts
  }.merge(options)
  options.delete_if { |k, v| v.nil? || v == [] }
  # because couchrest doesn't handle arrays correctly
  options[:counts] = options[:counts].to_s unless options[:counts].nil?
  options[:sort] = options[:sort].to_s unless options[:sort].nil?

  CURRENT_DB.view('_design/sabisu/_search/all_fields', options.merge(q: query))
end

.stale(params) ⇒ Object 



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# File 'lib/sabisu/event.rb', line 81

def self.stale(params)
  # get cloudant events and put them into a hash
  cloudant_events = {}
  cloudant_events_tmp = all['rows']
  cloudant_events_tmp.each do |event|
    event = event['doc']['event']
    client = event['client']['name']
    check = event['check']['name']
    cloudant_events[client] = {} unless cloudant_events.key?(client)
    cloudant_events[client][check] = {
      status: event['check']['status'],
      output: event['check']['output']
    }
  end
  ##############################################

  # get sensu event and put them into a hash
  sensu = Sensu.new
  rawdata = sensu.request(method: 'GET', ssl: true, path: '/events')
  sensu_events_tmp = JSON.parse(rawdata.body)
  sensu_events = {}
  sensu_events_tmp.each do |event|
    client = event['client']
    check = event['check']
    sensu_events[client] = {} unless sensu_events.key?(client)
    sensu_events[client][check] = {
      status: event['status'],
      output: event['output']
    }
  end
  ##############################################

  stale = cloudant_events.deep_diff(sensu_events)

  # get list of cloudant docs to be deleted (marked as recovered by sensu)
  # this is done by iterating over the deep_diff and finding places where
  # there is no sensu alert for a client/check (ie nil)
  if params.key?('clear_recovered') && params['clear_recovered'].to_s == 'true'
    clear_list = cloudant_events_tmp.each.map do |event|
      client = event['doc']['event']['client']['name']
      check = event['doc']['event']['check']['name']
      unless sensu_events.key?(client) && sensu_events[client].key?(check)
        { client: client, check: check }
      end
    end.compact

    clear_events(clear_list)
  end

  stale
end

.update_design_doc ⇒ Object 



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# File 'lib/sabisu/event.rb', line 44

def self.update_design_doc
  # create search indexes
  fields = FIELDS.map do |field|
    next if field.key?(:index) && field[:index] == false
    field[:facet] == true ? facet = ", { 'facet': true }" : ''
    "
    if (typeof(doc.event.#{field[:path]}) !== 'undefined' && doc.event.#{field[:path]} !== null){
index('#{field[:name]}', doc.event.#{field[:path]}#{facet});
    }"
  end
  search_function = "
    function(doc) {
index('default', doc._id);
    #{fields.join(' ')}
    }"
  search_indexes = { all_fields: { analyzer: 'whitespace', index: search_function } }

  # save the design doc only if it has changed or doesn't exist
  begin
    doc = CURRENT_DB.get('_design/sabisu')
    if doc[:indexes] != search_indexes
      doc[:languages] = 'javascript'
      doc[:indexes] = search_indexes
      CURRENT_DB.save_doc(doc)
    end
  rescue ::RestClient::Conflict
    # ignore this
    puts 'doc conflict'
  rescue ::RestClient::ResourceNotFound
    CURRENT_DB.save_doc(
      '_id' => '_design/sabisu',
      :language => 'javascript',
      :indexes => search_indexes
    )
  end
end

Instance Method Details

#to_hash ⇒ Object 



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# File 'lib/sabisu/event.rb', line 149

def to_hash
  hash = {}
  instance_variables.each do |var|
    hash[var.to_s.delete('@')] = instance_variable_get(var)
  end
  hash
end

#to_json ⇒ Object 



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# File 'lib/sabisu/event.rb', line 157

def to_json
  JSON.pretty_generate(to_hash)
end