Microsoft Emotion API for Video Operation Result Not Found - Rails - ruby-on-rails

Question

I'm working with the Microsoft Emotion API for processing emotions in video in a Rails app. I was able to make the call to the API to submit an operation, but now I have to query another API to get the status of the operation and once it's done it will provide the emotions data.
My issue is that when I query the results API, the response is that my operation is not found. As in, it doesn't exist.
I first sent the below request through my controller, which worked great:
#static controller
uri = URI('https://api.projectoxford.ai/emotion/v1.0/recognizeinvideo')
uri.query = URI.encode_www_form({})
request = Net::HTTP::Post.new(uri.request_uri)
request['Ocp-Apim-Subscription-Key'] = ENV['MEA_SubscriptionKey1']
request['Content-Type'] = 'application/octet-stream'
request.body = File.read("./public/mark_zuck.mov")
response = Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
http.request(request)
end
# Get response headers
response.each_header do |key, value|
p "#{key} => #{value}"
end
# Get operation location and id of operation
operation_location = response["operation-location"]
oid = operation_location.split("/")[6]
The response of this first call is:
"operation-location => https://api.projectoxford.ai/emotion/v1.0/operations/e7ef2ee1-ce75-41e0-bb64-e33ce71b1668"
The protocol is for one to grab the end of the "operation-location" url, which is the operation id, and send it back to the results API url like below:
# parse operation ID from url and add it to results API url
url = 'https://api.projectoxford.ai/emotion/v1.0/operations/' + oid
uri = URI(url)
uri.query = URI.encode_www_form({})
request = Net::HTTP::Get.new(uri.request_uri)
request['Ocp-Apim-Subscription-Key'] = ENV['MEA_SubscriptionKey1']
response = Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
http.request(request)
end
# Get response headers
response.each_header do |key, value|
p "#{key} => #{value}"
end
The result I get is:
"{\"error\":{\"code\":\"Unspecified\",\"message\":\"Operation not found.\"}}"
I get the same result when I query the Microsoft online API console with the operation id of an operation created through my app.
Does anyone have any ideas or experience with this? I would greatly appreciate it.

Answer 1

You do not need parse the "oid" out of "operation-location" header, as it is already the URL you should GET the status.
The following code works for me. Use it to see if you still see the issue.
require 'net/http'
require 'uri'
uri = URI('https://api.projectoxford.ai/emotion/v1.0/recognizeinvideo')
uri.query = URI.encode_www_form({})
request = Net::HTTP::Post.new(uri.request_uri)
request['Ocp-Apim-Subscription-Key'] = '<your key>'
request['Content-Type'] = 'application/octet-stream'
videoFile = File.open("c:\\1mb.mp4", "rb")
request.body = videoFile.read
videoFile.close
response = Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
http.request(request)
end
puts response.message
puts response.read_body
# Get response headers
response.each_header do |key, value|
p "#{key} => #{value}"
end
# Get operation location url for subsequent calls
operation_location = response["operation-location"]
operation_url = operation_location
uri = URI(operation_url)
uri.query = URI.encode_www_form({})
loop do
request = Net::HTTP::Get.new(uri.request_uri)
request['Ocp-Apim-Subscription-Key'] = '<your key>'
response = Net::HTTP.start(uri.host, uri.port, :use_ssl => uri.scheme == 'https') do |http|
http.request(request)
end
puts response.read_body
response_msg = response.read_body
break if response_msg.include?("Succeeded") or response_msg.include?("Failed")
sleep 20
end
puts response.message
puts response.read_body