Class: Arrest::HttpSource

Inherits:
Object
  • Object
show all
Defined in:
lib/arrest/transport/http_source.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(base) ⇒ HttpSource

Returns a new instance of HttpSource.



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# File 'lib/arrest/transport/http_source.rb', line 10

def initialize base
  @base = base
end

Instance Attribute Details

#base ⇒ Object (readonly)

Returns the value of attribute base.



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# File 'lib/arrest/transport/http_source.rb', line 8

def base
  @base
end

Instance Method Details

#add_headers(context, headers) ⇒ Object 



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# File 'lib/arrest/transport/http_source.rb', line 18

def add_headers(context, headers)
  decorator = context.header_decorator if context
  decorator ||= Arrest::Source.header_decorator
  hds = decorator.headers
  hds.each_pair do |k,v|
    headers[k.to_s] = v.to_s
  end
  hds
end

#connection ⇒ Object 



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# File 'lib/arrest/transport/http_source.rb', line 151

def connection
  conn = Faraday.new(:url => @base) do |builder|
    builder.request  :url_encoded
    builder.adapter  :net_http
    builder.use Faraday::Response::Logger, Arrest::logger
  end
end

#delete(context, rest_resource) ⇒ Object 



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# File 'lib/arrest/transport/http_source.rb', line 66

def delete(context, rest_resource)
  profiler_status_str = ""
  ::ActiveSupport::Notifications.instrument("http.sgdb",
                                        :method => :delete, :url => rest_resource.resource_location, :status => profiler_status_str) do
    raise "To delete an object it must have an id" unless rest_resource.respond_to?(:id) && rest_resource.id != nil
    headers = nil
    response = self.connection().delete do |req|
      req.url(rest_resource.resource_location)
      headers = add_headers(context, req.headers)
    end
    rql = RequestLog.new(:delete, rest_resource.resource_location, nil, headers)
    rsl = ResponseLog.new(response.env[:status], response.body)
    Arrest::Source.call_logger.log(rql, rsl)
    if response.env[:status] != 200
      handle_errors(rest_resource, response.body, response.env[:status])
    end
    profiler_status_str << response.env[:status].to_s
    response.env[:status] == 200
  end
end

#delete_all(context, resource_path) ⇒ Object 



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# File 'lib/arrest/transport/http_source.rb', line 53

def delete_all(context, resource_path)
  headers = nil
  response = self.connection().delete do |req|
    req.url(resource_path)
    headers = add_headers(context, req.headers)
  end
  rql = RequestLog.new(:delete, "#{resource_path}", nil, headers)
  rsl = ResponseLog.new(response.env[:status], response.body)
  Arrest::Source.call_logger.log(rql, rsl)

  response.env[:status] == 200
end

#get(context, sub, filter = {}) ⇒ Object 



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# File 'lib/arrest/transport/http_source.rb', line 28

def get(context, sub, filter={})
  sub = fix_url_encode(sub)
  profiler_status_str = ""
  ::ActiveSupport::Notifications.instrument("http.sgdb",
                                            :method => :get, :url => sub, :status => profiler_status_str) do
    headers = nil
    response = self.connection().get do |req|
      req.url(sub, filter)
      headers = add_headers(context, req.headers)
    end
    rql = RequestLog.new(:get, "#{sub}#{hash_to_query filter}", nil, headers)
    rsl = ResponseLog.new(response.env[:status], response.body)
    Arrest::Source.call_logger.log(rql, rsl)
    if response.env[:status] == 401
      raise Errors::PermissionDeniedError.new(response.body)
    elsif response.env[:status] == 404
      raise Errors::DocumentNotFoundError
    elsif response.env[:status] != 200
      raise Errors::UnknownError.new(response.body)
    end
    profiler_status_str << response.env[:status].to_s
    response.body
  end
end

#hash_to_query(hash) ⇒ Object 



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# File 'lib/arrest/transport/http_source.rb', line 159

def hash_to_query hash
  return "" if hash.empty?
  r = ""
  c = '?'
  hash.each_pair do |k,v|
    r << c
    r << k.to_s
    r << '='
    r << v.to_s
    c = '&'
  end
  r
end

#post(context, rest_resource) ⇒ Object 



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# File 'lib/arrest/transport/http_source.rb', line 117

def post(context, rest_resource)
  profiler_status_str = ""
  ::ActiveSupport::Notifications.instrument("http.sgdb",
                                            :method => :post,
                                            :url => rest_resource.resource_path,
                                            :status => profiler_status_str) do
    raise "new object must have setter for id" unless rest_resource.respond_to?(:id=)
    raise "new object must not have id" if rest_resource.respond_to?(:id) && rest_resource.id != nil
    hash = rest_resource.to_jhash(:create)
    hash.delete(:id)
    hash.delete('id')

    body = JSON.generate(hash)
    headers = nil
    response = self.connection().post do |req|
      req.url rest_resource.resource_path
      headers = add_headers(context, req.headers)
      req.body = body
    end
    rql = RequestLog.new(:post, rest_resource.resource_path, body, headers)
    rsl = ResponseLog.new(response.env[:status], response.body)
    Arrest::Source.call_logger.log(rql, rsl)
    if (response.env[:status] == 201)
      location = response.env[:response_headers][:location]
      id = location.gsub(/^.*\//, '')
      rest_resource.id= id
      true
    else
      handle_errors(rest_resource, response.body, response.env[:status])
      false
    end
  end
end

#put(context, rest_resource) ⇒ Object 



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# File 'lib/arrest/transport/http_source.rb', line 87

def put(context, rest_resource)
  raise "To change an object it must have an id" unless rest_resource.respond_to?(:id) && rest_resource.id != nil
  hash = rest_resource.to_jhash(:update)
  hash.delete(:id)
  hash.delete("id")
  body = JSON.generate(hash)

  profiler_status_str = ""
  ::ActiveSupport::Notifications.instrument("http.sgdb",
                                            :method => :delete,
                                            :url => rest_resource.resource_location,
                                            :status => profiler_status_str) do
    headers = nil
    location = rest_resource.resource_location
    response = self.connection().put do |req|
      req.url(location)
      headers = add_headers(rest_resource.context, req.headers)
      req.body = body
    end
    rql = RequestLog.new(:put, location, body, headers)
    rsl = ResponseLog.new(response.env[:status], response.body)
    Arrest::Source.call_logger.log(rql, rsl)
    if response.env[:status] != 200
      handle_errors(rest_resource, response.body, response.env[:status])
    end
    profiler_status_str << response.env[:status].to_s
    response.env[:status] == 200
  end
end

#url ⇒ Object 



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# File 'lib/arrest/transport/http_source.rb', line 14

def url
  @base
end