Class: Slipcover::HttpAdapter

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

Defined Under Namespace

Classes: ConflictError, DBNotFound, DocumentNotFound, NamedViewNotFound, NotFound, ParseError

Instance Method Summary collapse

Instance Method Details

#delete(url, data = {}) ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 27

def delete(url, data={})
  try {
    parse( RestClient.delete(url + query_string(data), headers) )
  }
end

#error_class(e) ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 67

def error_class(e)
  {
    JSON::ParserError => ParseError,
    RestClient::ResourceNotFound => NotFound,
    RestClient::PreconditionFailed => ConflictError,
    RestClient::Conflict => ConflictError

  }[e.class] || e.class
end

#get(url, data = {}) ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 9

def get(url, data={})
  try {
    parse( RestClient.get(url + query_string(data), headers) )
  }
end

#head(url, data = {}) ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 3

def head(url, data={})
  try {
    parse( RestClient.head(url + query_string(data), headers) )
  }
end

#headers ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 95

def headers
  {:content_type => :json, :accept => :json}
end

#parse(response) ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 43

def parse(response)
  parsed = JSON.parse(response)
  parsed.is_a?(Hash) ? parsed.symbolize_keys : parsed
end

#post(url, data = {}) ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 15

def post(url, data={})
  try {
    parse( RestClient.post(url, data.to_json, headers) )
  }
end

#put(url, data = {}) ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 21

def put(url, data={})
  try {
    parse( RestClient.put(url, data.to_json, headers) )
  }
end

#query_string(data) ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 33

def query_string(data)
  return "" if data.empty?

  query = data.map do |key, value|
    "#{key}=#{value}"
  end.join("&")

  "?#{query}"
end

#reraise(e) ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 54

def reraise(e)
  # As we keep doing more stuff with couchdb we might want to update this list
  response = JSON.parse(e.response) rescue Hash.new
  case response["reason"]
  when "no_db_file" then raise DBNotFound, e.response
  when "Database does not exist." then raise DBNotFound, e.response
  when "missing_named_view" then raise NamedViewNotFound, e.response
  when "missing" then raise DocumentNotFound, e.response
  else
    raise error_class(e).new(response.empty? ? e.message : e.response)
  end
end

#try ⇒ Object 



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# File 'lib/slipcover/http_adapter.rb', line 48

def try
  yield
rescue Exception => e
  reraise(e)
end