Class: T2Server::HttpConnection
- Inherits:
-
Object
- Object
- T2Server::HttpConnection
- Defined in:
- lib/t2-server/net/connection.rb
Overview
A class representing a http connection to a Taverna Server. This class should only ever be created via the T2Server::Connection factory class.
Direct Known Subclasses
Instance Attribute Summary collapse
-
#uri ⇒ Object
readonly
The URI of this connection instance.
Instance Method Summary collapse
-
#DELETE(uri, credentials) ⇒ Object
:call-seq: DELETE(uri, credentials) -> true or false.
-
#GET(uri, type, range, credentials, &block) ⇒ Object
:call-seq: GET(uri, type, range, credentials) -> string.
-
#initialize(uri, params = nil) ⇒ HttpConnection
constructor
Open a http connection to the Taverna Server at the uri supplied.
-
#OPTIONS(uri, credentials) ⇒ Object
:call-seq: OPTIONS(uri, credentials) -> hash.
-
#POST(uri, data, type, credentials) ⇒ Object
:call-seq: POST(uri, value, type, credentials) -> URI POST(uri, stream, type, credentials) -> URI.
-
#PUT(uri, data, type, credentials) ⇒ Object
:call-seq: PUT(uri, value, type, credentials) -> true or false PUT(uri, value, type, credentials) -> URI PUT(uri, stream, type, credentials) -> URI.
Constructor Details
#initialize(uri, params = nil) ⇒ HttpConnection
Open a http connection to the Taverna Server at the uri supplied.
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# File 'lib/t2-server/net/connection.rb', line 92 def initialize(uri, params = nil) @uri = uri @params = params || DefaultConnectionParameters.new # Open a persistent HTTP connection. @http = Net::HTTP::Persistent.new("Taverna_Server_Ruby_Client") # Set timeouts if specified. @http.open_timeout = @params[:open_timeout] if @params[:open_timeout] @http.read_timeout = @params[:read_timeout] if @params[:read_timeout] end |
Instance Attribute Details
#uri ⇒ Object (readonly)
The URI of this connection instance.
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# File 'lib/t2-server/net/connection.rb', line 89 def uri @uri end |
Instance Method Details
#DELETE(uri, credentials) ⇒ Object
:call-seq:
DELETE(uri, credentials) -> true or false
Perform an HTTP DELETE on a uri on the server. If successful true is returned.
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# File 'lib/t2-server/net/connection.rb', line 204 def DELETE(uri, credentials) delete = Net::HTTP::Delete.new(uri.path) response = submit(delete, uri, credentials) case response when Net::HTTPNoContent # Success, carry on... true else report_error("DELETE", uri.path, response, credentials) end end |
#GET(uri, type, range, credentials, &block) ⇒ Object
:call-seq:
GET(uri, type, range, credentials) -> string
HTTP GET a resource at uri of type from the server. If successful the body of the response is returned. A portion of the data can be retrieved by specifying a byte range, start..end, with the range parameter.
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# File 'lib/t2-server/net/connection.rb', line 111 def GET(uri, type, range, credentials, &block) get = Net::HTTP::Get.new(uri.path) get["Accept"] = type get["Range"] = "bytes=#{range.min}-#{range.max}" unless range.nil? response = submit(get, uri, credentials, &block) case response when Net::HTTPOK, Net::HTTPPartialContent return response.body when Net::HTTPNoContent return nil when Net::HTTPMovedTemporarily new_conn = redirect(response["location"]) raise ConnectionRedirectError.new(new_conn) else report_error("GET", uri.path, response, credentials) end end |
#OPTIONS(uri, credentials) ⇒ Object
:call-seq:
OPTIONS(uri, credentials) -> hash
Perform the HTTP OPTIONS command on the given uri and return a hash of the headers returned.
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# File 'lib/t2-server/net/connection.rb', line 223 def OPTIONS(uri, credentials) = Net::HTTP::Options.new(uri.path) response = submit(, uri, credentials) case response when Net::HTTPOK response.to_hash else report_error("OPTIONS", uri.path, response, credentials) end end |
#POST(uri, data, type, credentials) ⇒ Object
:call-seq:
POST(uri, value, type, credentials) -> URI
POST(uri, stream, type, credentials) -> URI
Upload data via HTTP POST. Data may be specified as a value or as a stream. The stream can be any object that has a read(length) method; instances of File or IO, for example.
If successful the URI of the uploaded resource is returned.
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# File 'lib/t2-server/net/connection.rb', line 180 def POST(uri, data, type, credentials) post = Net::HTTP::Post.new(uri.path) post.content_type = type set_upload_body(post, data) response = submit(post, uri, credentials) case response when Net::HTTPCreated # return the URI of the newly created item URI.parse(response['location']) when Net::HTTPServiceUnavailable raise ServerAtCapacityError.new else report_error("POST", uri.path, response, credentials) end end |
#PUT(uri, data, type, credentials) ⇒ Object
:call-seq:
PUT(uri, value, type, credentials) -> true or false
PUT(uri, value, type, credentials) -> URI
PUT(uri, stream, type, credentials) -> URI
Upload data via HTTP PUT. Data may be specified as a value or as a stream. The stream can be any object that has a read(length) method; instances of File or IO, for example.
If successful true or a URI to the uploaded resource is returned depending on whether the operation has altered a parameter (true) or uploaded new data (URI).
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# File 'lib/t2-server/net/connection.rb', line 143 def PUT(uri, data, type, credentials) put = Net::HTTP::Put.new(uri.path) put.content_type = type set_upload_body(put, data) response = submit(put, uri, credentials) case response when Net::HTTPOK, Net::HTTPAccepted # We've either set a parameter or started a run so we get 200 or 202 # back from the server, respectively. Return true to indicate success. true when Net::HTTPCreated # We've uploaded data so we get 201 back from the server. Return the # uri of the created resource. URI.parse(response['location']) when Net::HTTPNoContent # We've modified data so we get 204 back from the server. Return the # uri of the modified resource. uri when Net::HTTPServiceUnavailable raise ServerAtCapacityError.new else report_error("PUT", uri.path, response, credentials) end end |