You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
1.8 KiB
95 lines
1.8 KiB
#!/usr/bin/env ruby
|
|
|
|
require 'uri'
|
|
require 'net/http'
|
|
require 'json'
|
|
|
|
class CPIFetcher
|
|
DEFAULT_CPI_SERIES_URL = 'http://api.bls.gov/publicAPI/v2/timeseries/data/CUUSA210SA0'
|
|
attr_reader :cpi_series_url
|
|
|
|
def initialize
|
|
@cpi_series_url = URI(ENV['CPI_SERIES_URL'] || DEFAULT_CPI_SERIES_URL)
|
|
end
|
|
|
|
def cpi
|
|
resp = fetch_raw_response
|
|
|
|
return nil unless resp['Results']['series']
|
|
|
|
resp['Results']['series'].first['data'].first['value']
|
|
end
|
|
|
|
private
|
|
|
|
def fetch_raw_response
|
|
JSON.parse(Net::HTTP.get_response(cpi_series_url).body)
|
|
end
|
|
end
|
|
|
|
if $PROGRAM_NAME == __FILE__
|
|
puts CPIFetcher.new.cpi
|
|
exit 0
|
|
end
|
|
|
|
__END__
|
|
{
|
|
"status": "REQUEST_SUCCEEDED",
|
|
"responseTime": 36,
|
|
"message": [],
|
|
"Results": {
|
|
"series": [
|
|
{
|
|
"seriesID": "CUUSA210SA0",
|
|
"data": [
|
|
{
|
|
"year": "2015",
|
|
"period": "S01",
|
|
"periodName": "1st Half",
|
|
"value": "220.381",
|
|
"footnotes": [
|
|
{}
|
|
]
|
|
},
|
|
{
|
|
"year": "2014",
|
|
"period": "S02",
|
|
"periodName": "2nd Half",
|
|
"value": "220.891",
|
|
"footnotes": [
|
|
{}
|
|
]
|
|
},
|
|
{
|
|
"year": "2014",
|
|
"period": "S01",
|
|
"periodName": "1st Half",
|
|
"value": "220.352",
|
|
"footnotes": [
|
|
{}
|
|
]
|
|
},
|
|
{
|
|
"year": "2013",
|
|
"period": "S02",
|
|
"periodName": "2nd Half",
|
|
"value": "217.983",
|
|
"footnotes": [
|
|
{}
|
|
]
|
|
},
|
|
{
|
|
"year": "2013",
|
|
"period": "S01",
|
|
"periodName": "1st Half",
|
|
"value": "216.941",
|
|
"footnotes": [
|
|
{}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
]
|
|
}
|
|
}
|