Class: Store::Idn

Inherits:
Store
  • Object
show all
Defined in:
lib/store/idn.rb

Constant Summary collapse

METS =
["delta_t","gust_kmh","rain_trace","rel_hum","wind_spd_kmh","air_temp","apparent_t"]

Instance Method Summary collapse

Constructor Details

#initialize(origin, settings) ⇒ Idn

Returns a new instance of Idn


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# File 'lib/store/idn.rb', line 19

def initialize origin,settings
	super
	@data_folder = mandatory_param :data_folder, "store_settings"
end

Instance Method Details

#data_filesObject


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# File 'lib/store/idn.rb', line 24

def data_files
	Dir[@data_folder+"/**/*"].reject{|f| File.directory? f}
end

#get_metric(m, start = nil, stop = nil, step = nil) ⇒ Object


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# File 'lib/store/idn.rb', line 63

def get_metric m, start=nil, stop=nil, step=nil
	site, met = m.id.split(SEP).last.split(sep)

	unless idn_sitemap(site).length > 1 then
		return {error: "Site #{site} does not exist"}.to_json
	end

	blob = []
	zone = ""

	idn_sitemap(site).each { |f|
		blob += JSON.parse(File.read(f)).observations.data
		zone = JSON.parse(File.read(f)).observations.header.first.time_zone
	}

	offset = "+10" if zone == "EST"
	offset = "+11" if zone == "EDT"

	blob = blob.uniq{|k| k.local_date_time_full}
	data = []

	blob.each{|b|
		date = DateTime.parse("#{b.local_date_time_full}#{offset}").strftime("%s").to_i
		data.push({x: date, y: b[met].to_f}) if date.between?(start,stop)
	}

	return {error: "No data for period specified"} if data.nil? || data == []

	data_sanitize data, start, stop, step
end

#get_metric_url(m, _, _, _) ⇒ Object


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# File 'lib/store/idn.rb', line 56

def get_metric_url m,_,_,_
	name = m.id.split(SEP).last.split(sep).first
	id = idn_sitemap(name).first.split("/")[2]
	dir = @data_folder.gsub("public/","")
	return "#{dir}/#{id}"
end

#get_metrics_listObject


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# File 'lib/store/idn.rb', line 28

def get_metrics_list
	list = []
	data_files.each{|f|
		d = JSON.parse(File.read(f))
		site = nameparse(d.observations.header.first.name)
		unless d.observations.data.empty? 
			measures = d.observations.data.first.map{|k,v| k}.select{|m| METS.include? m}
			list.push( measures.map{|m| "#{site}#{sep}#{m}"})
		end
	}

	set_idn_sitemap

	list.flatten.uniq
end

#idn_sitemap(site) ⇒ Object


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# File 'lib/store/idn.rb', line 116

def idn_sitemap site
	redis_conn.smembers "#{REDIS_KEY}BOM:IDN_SITEMAP:#{site}"
end

#is_up?Boolean

In lieu of pinging a href, confirm the existance of the file

Returns:

  • (Boolean)

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# File 'lib/store/idn.rb', line 46

def is_up?
        File.exists?(@data_folder)
end

#live?Boolean

Flat files don't auto update, therefore cannot be assumed to be live

Returns:

  • (Boolean)

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# File 'lib/store/idn.rb', line 51

def live?
        false
end

#nameparse(n) ⇒ Object


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# File 'lib/store/idn.rb', line 106

def nameparse n; n.gsub(" ","").gsub("-",""); end

#sepObject


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# File 'lib/store/idn.rb', line 120

def sep; "-"; end

#set_idn_sitemapObject


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# File 'lib/store/idn.rb', line 108

def set_idn_sitemap
	r = redis_conn
	data_files.each{|f|
		site = nameparse(JSON.parse(File.read(f)).observations.header.first.name)
		r.sadd "#{REDIS_KEY}BOM:IDN_SITEMAP:#{site}",f
	}
end