Class: App42::Util

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

Instance Method Summary collapse

Instance Method Details

#compute_hmac(secret_key, sorted_params) ⇒ Object

Encoding and decoding of the queries are done using the Hmac Algorithm.



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# File 'lib/util/util.rb', line 106

def compute_hmac(secret_key, sorted_params)
  signature =  Base64.encode64(HMAC::SHA1::digest(secret_key, sorted_params)).strip
  puts "Signature #{signature}"
  computed_hmac = CGI.escape(signature)
  puts "Computed Hmac #{computed_hmac}"
  computed_hmac
end

#extractFileExtension(fileName) ⇒ Object

Taking extension out



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# File 'lib/util/util.rb', line 221

def extractFileExtension(fileName)
  ext = File.extname(fileName)
  return ext;
end

#get_timestamp_utc ⇒ Object

Finds the current time



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# File 'lib/util/util.rb', line 24

def get_timestamp_utc
  #time_stamp = Time.now.utc.iso8601
  #time_stamp = Time.now.utc.xmlschema
  time_stamp = Time.now.utc
  time_stamp = time_stamp.strftime("%Y-%m-%dT%H:%M:%S.%LZ")
  puts "TimeStamp - #{time_stamp}"
  time_stamp
end

#get_timestamp_utc_from_date(date) ⇒ Object

Finds the particular time for a particular date



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# File 'lib/util/util.rb', line 42

def get_timestamp_utc_from_date(date)
  time = Time.parse(date).utc
  time_stamp = time.strftime("%Y-%m-%dT%H:%M:%S.%LZ")
  puts "TimeStamp - #{time_stamp}"
  time_stamp
end

#get_timestamp_utc_from_date_discount(date) ⇒ Object 



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# File 'lib/util/util.rb', line 49

def get_timestamp_utc_from_date_discount(date)
  time = Time.parse(date).utc
  time_stamp = time.strftime("%a %b %d %l:%M:%S %Z %Y")
  puts "TimeStamp - #{time_stamp}"
  time_stamp
end

#my_strip(str) ⇒ Object 



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# File 'lib/util/util.rb', line 114

def my_strip(str)
  s =  str.gsub(/ /,'')
  return s
end

#sign(secret_key, params) ⇒ Object

It signs the request that has to be sent in the Hmac format.



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# File 'lib/util/util.rb', line 86

def sign(secret_key, params)
  sorted_params =  sort_convert_table(params)
  puts sorted_params
  signature = compute_hmac(secret_key, sorted_params)
  puts "Signature #{signature}"
  signature
end

#sort_convert_table(table) ⇒ Object

This method sorts all the values that are stored in the table.



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# File 'lib/util/util.rb', line 64

def sort_convert_table(table)
  sorted_params = ""
  table.sort {|a,b| a[0] <=> b[0]}.each{ |key, val|
    sorted_params << key
    sorted_params << val
  }
  puts "Sorted params #{sorted_params}"
  sorted_params
end

#throwExceptionIfEmailNotValid(obj, name) ⇒ Object

An exception to check whether the email entered is valid or not.



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# File 'lib/util/util.rb', line 172

def throwExceptionIfEmailNotValid(obj, name)
  if(obj==nil)
    raise App42Exception.new(name +" parameter can not be null")
  end
  email_regex = %r{
           ^ # Start of string

           [0-9a-z] # First character
           [0-9a-z.+]+ # Middle characters
           [0-9a-z] # Last character

           @ # Separating @ character

           [0-9a-z] # Domain name begin
           [0-9a-z.-]+ # Domain name middle
           [0-9a-z] # Domain name end

           $ # End of string
  }xi
  if (obj =~ email_regex) == 0
  else
    raise App42Exception.new(name + " is not valid. ")
  end
end

#throwExceptionIfNotValidExtension(fileName, name) ⇒ Object

An exception to check if the file has valid extension or not



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# File 'lib/util/util.rb', line 204

def throwExceptionIfNotValidExtension(fileName, name)
  if(fileName==nil)
    raise App42Exception.new(name + " parameter can not be null")
  end
  if(fileName.index('.') == -1)
    raise App42Exception.new(name + " does not contain valid extension. ")
  end
end

#throwExceptionIfNotValidImageExtension(fileName, name) ⇒ Object

To check if the image has a valid extension or not.



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# File 'lib/util/util.rb', line 233

def throwExceptionIfNotValidImageExtension(fileName, name)

  if(fileName == nil)
    raise App42Exception.new(name + " parameter can not be null")
  end

  if(fileName.index('.') == -1)
    raise App42Exception.new(name + " does not contain valid extension. ")
  end

  ext = extractFileExtension(fileName);
  if((ext.eql?(".jpg") == false) && (ext.eql?(".JPG") == false) && (ext.eql?(".jpeg") == false) && (ext.eql?(".JPEG") == false) && (ext.eql?(".gif") == false) && (ext.eql?(".GIF") == false) && (ext.eql?(".png") == false) && (ext.eql?(".PNG") == false))
    raise App42Exception.new( "The Request parameters are invalid. Only file with extensions jpg, jpeg, gif and png are supported");
  end

end

#throwExceptionIfNullOrBlank(obj, name) ⇒ Object

An exception to check whether the object is null or blank.



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# File 'lib/util/util.rb', line 126

def throwExceptionIfNullOrBlank(obj,name)
  if obj.kind_of?(String)
    trm = my_strip(obj)
  else
    trm = obj
  end

  if(trm==nil)
    raise App42Exception.new(name +" parameter can not be null");
  end
  if(trm == "")
    raise App42Exception.new(name +" parameter can not be blank");
  end
end

#validateHowMany(howMany) ⇒ Object

To check whether the value of how many is less than 1000 or not.



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# File 'lib/util/util.rb', line 159

def validateHowMany(howMany)
  if(howMany.to_i > 1000)
    raise App42Exception.new("How Many should be less than 1000");
  end
end

#validateMax(max) ⇒ Object

To check whether the max value is greater than zero or not.



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# File 'lib/util/util.rb', line 147

def validateMax(max)
  if(max.to_i < 1)
    raise App42Exception.new("Max must be greater than Zero.");
  end
end