Naming, download, errors, consistency… pretty much rewrite of the whole thing.
parent
52409bdfec
commit
b4f09f2efd
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@ -0,0 +1,64 @@
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class FileStorage::Client
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def login(token : String)
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request = FileStorage::Request::Login.new token
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send request
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response = parse_message [ FileStorage::Response::Login, FileStorage::Response::Error ], read
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case response
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when FileStorage::Response::Login
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# Received favorites, likes, etc.
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when FileStorage::Response::Error
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raise "user was not logged in: #{response.reason}"
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end
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response
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end
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def transfer(file_info : FileInfo, count, bindata)
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request = FileStorage::Request::PutChunk.new file_info, count, bindata
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send request
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response = parse_message [ FileStorage::Response::PutChunk, FileStorage::Response::Error ], read
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case response
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when FileStorage::Response::PutChunk
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when FileStorage::Response::Error
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raise "File chunk was not transfered: #{response.reason}"
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end
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response
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end
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def download(filedigest = nil, name = nil, tags = nil)
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request = FileStorage::Request::Download.new filedigest, name, tags
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send request
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response = parse_message [ FileStorage::Response::Download, FileStorage::Response::Error ], read
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case response
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when FileStorage::Response::Download
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when FileStorage::Response::Error
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raise "Download request denied: #{response.reason}"
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end
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response
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end
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def upload(token : String)
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request = FileStorage::Request::Upload.new token
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send request
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response = parse_message [ FileStorage::Response::Upload, FileStorage::Response::Error ], read
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case response
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when FileStorage::Response::Upload
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when FileStorage::Response::Error
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raise "Upload request failed: #{response.reason}"
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end
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response
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end
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end
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@ -27,28 +27,11 @@ class FileStorage::Request
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FileStorage.requests << Download
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end
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class FileStorage::Client
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def download(filedigest = nil, name = nil, tags = nil)
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request = FileStorage::Request::Download.new filedigest, name, tags
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send request
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response = parse_message [ FileStorage::Response::Download, FileStorage::Response::Error ], read
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case response
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when FileStorage::Response::Download
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when FileStorage::Response::Error
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raise "Download request denied: #{response.reason}"
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end
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response
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end
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end
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class FileStorage::Response
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JSONIPC.request Download, 30 do
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property mid : String
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def initialize(@mid)
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property mid : String
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property nb_chunks : Int32
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def initialize(@mid, @nb_chunks)
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end
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end
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end
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@ -0,0 +1,54 @@
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class FileStorage::Errors
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JSONIPC.request GenericError, 200 do
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property mid : String
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property reason : String
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def initialize(@mid, @reason)
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end
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end
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FileStorage.errors << GenericError
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# When uploading a chunk already present in the DB.
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JSONIPC.request ChunkAlreadyUploaded, 201 do
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property mid : String
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property reason = "Chunk already present"
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property filedigest : String
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property chunk : Chunk
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def initialize(@mid, @filedigest, @chunk)
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end
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end
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FileStorage.errors << ChunkAlreadyUploaded
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# You upload a chunk, but you are not the owner of the file.
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JSONIPC.request ChunkUploadDenied, 202 do
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property mid : String
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property reason = "This file is not yours"
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property filedigest : String
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def initialize(@mid, @filedigest)
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end
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end
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FileStorage.errors << ChunkUploadDenied
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# When uploading a file already present in the DB.
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JSONIPC.request FileExists, 203 do
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property mid : String
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property reason = "file already present"
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property filedigest : String
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def initialize(@mid, @filedigest)
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end
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end
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FileStorage.errors << FileExists
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# When transfering a chunk for an inexistent file.
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JSONIPC.request FileDoesNotExist, 204 do
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property mid : String
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property reason = "file does not exist"
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property filedigest : String
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def initialize(@mid, @filedigest)
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end
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end
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FileStorage.errors << FileDoesNotExist
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end
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@ -34,24 +34,6 @@ class FileStorage::Request
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FileStorage.requests << Login
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end
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class FileStorage::Client
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def login(token : String)
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request = FileStorage::Request::Login.new token
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send request
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response = parse_message [ FileStorage::Response::Login, FileStorage::Response::Error ], read
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case response
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when FileStorage::Response::Login
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# Received favorites, likes, etc.
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when FileStorage::Response::Error
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raise "user was not logged in: #{response.reason}"
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end
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response
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end
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end
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class FileStorage::Response
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JSONIPC.request Login, 5 do
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property mid : String
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@ -1,11 +1,11 @@
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class FileStorage::Request
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JSONIPC.request Transfer, 40 do
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JSONIPC.request PutChunk, 40 do
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property mid : String # autogenerated
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property filedigest : String # SHA256 digest of the entire file
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# Chunk:
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# - n : Int32 => chunk number
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# - on : Int32 => number of chunks
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# - digest : String => 1024-byte data in base64 format
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# - digest : String => digest of the chunk
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property chunk : Chunk # For now, just the counter in a string
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property data : String # base64 slice
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def initialize(file_info : FileInfo, count, bindata)
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@ -27,38 +27,59 @@ class FileStorage::Request
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user_data = filestoraged.get_user_data user.uid
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filestoraged.storage.transfer self, user_data
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filestoraged.storage.write_chunk self, user_data
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rescue e
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return Response::Error.new @mid, "unauthorized"
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end
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end
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FileStorage.requests << Transfer
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end
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FileStorage.requests << PutChunk
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class FileStorage::Client
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def transfer(file_info : FileInfo, count, bindata)
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request = FileStorage::Request::Transfer.new file_info, count, bindata
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send request
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JSONIPC.request GetChunk, 41 do
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property mid : String # autogenerated
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property filedigest : String # SHA256 digest of the entire file
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property n : Int32 # chunk number
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response = parse_message [ FileStorage::Response::Transfer, FileStorage::Response::Error ], read
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case response
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when FileStorage::Response::Transfer
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when FileStorage::Response::Error
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raise "File chunk was not transfered: #{response.reason}"
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def initialize(@filedigest, @n)
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@mid = UUID.random.to_s
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end
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response
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def handle(filestoraged : FileStorage::Service, event : IPC::Event::Events)
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user = filestoraged.get_logged_user event
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raise Exception.new "unauthorized" if user.nil?
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# FIXME: Maybe this should be moved to FileStorage::Service
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fd = event.connection.fd
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user_data = filestoraged.get_user_data user.uid
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filestoraged.storage.read_chunk self, user_data
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rescue e
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return Response::Error.new @mid, "unauthorized"
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end
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end
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FileStorage.requests << GetChunk
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end
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class FileStorage::Response
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JSONIPC.request Transfer, 40 do
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JSONIPC.request PutChunk, 40 do
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property mid : String
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property file_digest : String
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property n : Int32 # chunk number
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def initialize(@mid, @file_digest, @n)
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end
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end
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JSONIPC.request GetChunk, 41 do
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property mid : String
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property file_digest : String
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# Chunk:
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# - n : Int32 => chunk number
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# - on : Int32 => number of chunks
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# - digest : String => digest of the chunk
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property chunk : Chunk # Currently: info about the chunk
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property data : String # base64 slice
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def initialize(@mid, @file_digest, @chunk, @data)
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end
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end
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end
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@ -25,23 +25,6 @@ class FileStorage::Request
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FileStorage.requests << Upload
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end
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class FileStorage::Client
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def upload(token : String)
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request = FileStorage::Request::Upload.new token
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send request
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response = parse_message [ FileStorage::Response::Upload, FileStorage::Response::Error ], read
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case response
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when FileStorage::Response::Upload
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when FileStorage::Response::Error
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raise "Upload request failed: #{response.reason}"
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end
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response
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end
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end
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class FileStorage::Response
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JSONIPC.request Upload, 20 do
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property mid : String
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@ -49,10 +32,11 @@ class FileStorage::Response
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def initialize(@mid, @path)
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end
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end
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FileStorage.responses << Upload
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# JSONIPC.request Responses, 100 do
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# property mid : String
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# property responses : Array(Response) # a response for each request
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# property responses : Array(Response | Errors) # a response for each request
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# property response : String
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# property reason : String?
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#
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@ -1,43 +0,0 @@
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def remove_chunk_from_db(transfer_info : TransferInfo, chunk_number : Int32)
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transfer_info.chunks.delete chunk_number
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Context.db_by_filedigest.update transfer_info.file_info.digest, transfer_info
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end
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def write_a_chunk(userid : String, file_info : FileStorage::FileInfo, chunk_number : Int32, data : Bytes)
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# storage: Context.storage_directory/userid/fileuuid.bin
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dir = "#{Context.storage_directory}/#{userid}"
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FileUtils.mkdir_p dir
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path = "#{dir}/#{file_info.digest}.bin"
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# Create file if non existant
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File.open(path, "a+") do |file|
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end
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# Write in it
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File.open(path, "ab") do |file|
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offset = chunk_number * FileStorage.message_buffer_size
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file.seek(offset, IO::Seek::Set)
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file.write data
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end
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end
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### # TODO:
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### # why getting the file_info here? We could check for the transfer_info right away
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### # it has more info, and we'll get it later eventually
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###
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### file_info = nil
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### begin
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### file_info = user.uploads.select do |v|
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### v.file.digest == message.filedigest
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### end.first.file
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###
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### pp! file_info
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### rescue e : IndexError
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### puts "No recorded upload request for file #{message.filedigest}"
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###
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### rescue e
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### puts "Unexpected error: #{e}"
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### end
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@ -19,23 +19,14 @@ require "../common/colors"
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# upload or download its files.
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# TODO:
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# * Authd integration.
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# * Elegantly handling errors.
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# * Store the file, /files/userid/UID.bin for example: /files/1002/UID.bin.
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# * Metadata should be in a dodb.
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# /storage/partitions/by_uid/UID.json -> content:
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# data: /files/uid/UID.bin (storing raw files)
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# uid: 1002
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# name: "The File About Things"
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# size: 1500
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# tags: thing1 thing2
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# * Store the file, @root/files/UID for example: ./files/UID.
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# * Knowing which parts of the files are still to be sent.
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# * Rights.
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# * Quotas.
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require "./storage.cr"
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require "./network.cr"
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#### require "./sample.cr"
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require "dodb"
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require "json"
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@ -58,12 +49,9 @@ class FileStorage::Service < IPC::Service
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@auth : AuthD::Client
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@auth_key : String
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def initialize(storage_directory, file_info_directory, @auth_key)
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# Data and metadata storage directories.
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# storage_directory : String
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# file_info_directory : String
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@storage = FileStorage::Storage.new storage_directory, file_info_directory
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def initialize(storage_directory, @auth_key)
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# Data and metadata storage directory.
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@storage = FileStorage::Storage.new storage_directory
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@logged_users = Hash(Int32, AuthD::User::Public).new
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@logged_connections = Hash(Int32, IPC::Connection).new
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@ -164,14 +152,14 @@ class FileStorage::Service < IPC::Service
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info "<< #{request.class.name.sub /^FileStorage::Request::/, ""}"
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response = request.handle self, event
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response_type = response.class.name
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if response.is_a? FileStorage::Response::Error
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warning ">> #{response.class.name.sub /^FileStorage::Response::/, ""} (#{response.reason})"
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if response.responds_to?(:reason)
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warning ">> #{response_type.sub /^FileStorage::Errors::/, ""} (#{response.reason})"
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else
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info ">> #{response.class.name.sub /^FileStorage::Response::/, ""}"
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end
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#################################################################
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# THERE START
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#################################################################
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@ -229,7 +217,7 @@ class FileStorage::Service < IPC::Service
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# raise "The user isn't recorded in the users_status structure"
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# end
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#
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# transfer = FileStorage::Transfer.from_json(
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# transfer = FileStorage::PutChunk.from_json(
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# String.new event.message.payload
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# )
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# response = hdl_transfer transfer, Context.users_status[userid]
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@ -254,10 +242,6 @@ class FileStorage::Service < IPC::Service
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warning "unhandled IPC event: #{event.class}"
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end
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# TODOOOOOOOOOO TODO FIXME
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rescue exception
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error "exception: #{typeof(exception)} - #{exception.message}"
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end
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@ -265,25 +249,18 @@ class FileStorage::Service < IPC::Service
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end
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def self.from_cli
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storage_directory = "file-data-storage"
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file_info_directory = "file-info-storage"
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storage_directory = "files/"
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key = "nico-nico-nii" # Default authd key, as per the specs. :eyes:
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OptionParser.parse do |parser|
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parser.banner = "usage: filestoraged [options]"
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parser.on "-d storage-directory",
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"--storage-directory storage-directory",
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"The directory where to put uploaded files." do |opt|
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parser.on "-r root-directory",
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"--root-directory dir",
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"The root directory for FileStoraged." do |opt|
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storage_directory = opt
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end
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parser.on "-m metadata-directory",
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"--metadata-directory storage-directory",
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"The directory where to put metadata of uploaded files." do |opt|
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file_info_directory = opt
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end
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parser.on "-h",
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"--help",
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"Displays this help and exits." do
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@ -299,25 +276,8 @@ class FileStorage::Service < IPC::Service
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end
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end
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::FileStorage::Service.new storage_directory, file_info_directory, key
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::FileStorage::Service.new storage_directory, key
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end
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# TODO: this will probably be dropped at some point.
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# def do_response(event : IPC::Event::Message,
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# response : FileStorage::Message)
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#
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# case response
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# when FileStorage::Response
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# event.connection.send FileStorage::MessageType::Response.to_u8, response.to_json
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# when FileStorage::Responses
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# event.connection.send FileStorage::MessageType::Responses.to_u8, response.to_json
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# when FileStorage::Error
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# event.connection.send FileStorage::MessageType::Error.to_u8, response.to_json
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# else
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# puts "response should not happen: #{response}"
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# pp! response
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# end
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# end
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end
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FileStorage::Service.from_cli.run
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@ -36,6 +36,7 @@ end
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class FileStorage
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class_getter requests = [] of JSONIPC.class
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class_getter responses = [] of JSONIPC.class
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class_getter errors = [] of JSONIPC.class
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end
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class FileStorage::Client < IPC::Client
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@ -22,8 +22,8 @@ end
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# XXX TODO FIXME: architectural questions
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# Why keeping upload and download requests?
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# The server can be just for uploads, delegating downloads to HTTP.
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# In environment without HTTP integration, this could still be pertinent.
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# The server can be just for uploads, delegating downloads to HTTP,
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# but in environment without HTTP integration, this could still be relevant.
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class FileStorage::Storage
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property db : DODB::DataBase(TransferInfo)
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@ -33,47 +33,77 @@ class FileStorage::Storage
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property db_by_owner : DODB::Partition(TransferInfo)
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property db_by_tags : DODB::Tags(TransferInfo)
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# Where to store the data.
|
||||
# Where to store data: files, users informations, files metadata.
|
||||
property root : String
|
||||
|
||||
getter user_data : DODB::DataBase(UserData)
|
||||
getter user_data_per_user : DODB::Index(UserData)
|
||||
|
||||
def initialize(@root, file_info_directory)
|
||||
@db = DODB::DataBase(TransferInfo).new file_info_directory
|
||||
# FileStorage::Storage constructor takes a `root directory` as parameter
|
||||
# which is used to create 3 sub-dirs:
|
||||
# - files/ : actual files stored on the file-system
|
||||
# - meta/ : DODB TransferInfo
|
||||
# - users/ : DODB UserData (for later use: quotas, rights)
|
||||
|
||||
def initialize(@root)
|
||||
@db = DODB::DataBase(TransferInfo).new "'#{@root}/meta"
|
||||
|
||||
# Where to store uploaded files.
|
||||
FileUtils.mkdir_p "#{@root}/files"
|
||||
|
||||
# Create indexes, partitions and tags objects.
|
||||
@db_by_filedigest = @db.new_index "filedigest", &.file_info.digest
|
||||
@db_by_owner = @db.new_partition "owner", &.owner.to_s
|
||||
@db_by_tags = @db.new_tags "tags", &.file_info.tags
|
||||
|
||||
@user_data = DODB::DataBase(UserData).new "#{@root}/user-data"
|
||||
@user_data = DODB::DataBase(UserData).new "#{@root}/users"
|
||||
@user_data_per_user = @user_data.new_index "uid", &.uid.to_s
|
||||
end
|
||||
|
||||
# Path part of the URL.
|
||||
def get_path(file_digest : String)
|
||||
"/files/#{file_digest}"
|
||||
end
|
||||
|
||||
# Path on the file-system.
|
||||
def get_fs_path(file_digest : String)
|
||||
"#{@root}#{get_path file_digest}"
|
||||
end
|
||||
|
||||
# Reception of a file chunk.
|
||||
def transfer(message : FileStorage::Request::Transfer, user : UserData)
|
||||
def write_chunk(message : FileStorage::Request::PutChunk, user : UserData)
|
||||
|
||||
# We received a message containing a chunk of file.
|
||||
mid = message.mid
|
||||
mid ||= "no message id"
|
||||
|
||||
# Get the transfer info from the db
|
||||
# Get the transfer info from the db.
|
||||
transfer_info = @db_by_filedigest.get message.filedigest
|
||||
|
||||
file_digest = transfer_info.file_info.digest
|
||||
|
||||
if transfer_info.nil?
|
||||
# The user has to send an upload request before sending anything.
|
||||
# If not the case, it should be discarded.
|
||||
raise "file not recorded"
|
||||
end
|
||||
|
||||
chunk_number = message.chunk.n
|
||||
if transfer_info.nil?
|
||||
# The user did not ask permission to upload the file (upload request).
|
||||
return FileStorage::Errors::FileDoesNotExist.new mid, file_digest
|
||||
end
|
||||
|
||||
# Verify the user had a granted upload request.
|
||||
if transfer_info.owner != user.uid
|
||||
return FileStorage::Errors::ChunkUploadDenied.new mid, file_digest
|
||||
end
|
||||
|
||||
# TODO: this should be dynamic (per file) in the future.
|
||||
chunk_size = FileStorage.message_buffer_size
|
||||
chunk_number = message.chunk.n
|
||||
data = Base64.decode message.data
|
||||
|
||||
# Verify that the chunk sent was really missing.
|
||||
if transfer_info.chunks.select do |v| v == chunk_number end.size == 1
|
||||
write_a_chunk user.uid.to_s, transfer_info.file_info, chunk_number, data
|
||||
write_a_chunk file_digest, chunk_size, chunk_number, data
|
||||
else
|
||||
# TODO: send the remaining chunks to upload.
|
||||
raise "non existent chunk or already uploaded"
|
||||
|
|
@ -84,10 +114,49 @@ class FileStorage::Storage
|
|||
# TODO: verify the digest, if no more chunks.
|
||||
|
||||
digest = transfer_info.file_info.digest
|
||||
FileStorage::Response::Transfer.new mid, digest, chunk_number
|
||||
FileStorage::Response::PutChunk.new mid, digest, chunk_number
|
||||
rescue e
|
||||
puts "Error handling transfer: #{e.message}"
|
||||
FileStorage::Response::Error.new mid.not_nil!, "Unexpected error: #{e.message}"
|
||||
puts "Error handling write_chunk: #{e.message}"
|
||||
FileStorage::Errors::GenericError.new mid.not_nil!, "Unexpected error: #{e.message}"
|
||||
end
|
||||
|
||||
# Provide a file chunk to the client.
|
||||
def read_chunk(message : FileStorage::Request::GetChunk, user : UserData)
|
||||
|
||||
# We received a message containing a chunk of file.
|
||||
mid = message.mid
|
||||
mid ||= "no message id"
|
||||
|
||||
file_digest = message.filedigest
|
||||
# TODO: this should be dynamic (per file) in the future.
|
||||
chunk_size = FileStorage.message_buffer_size
|
||||
chunk_number = message.n
|
||||
transfer_info = @db_by_filedigest.get file_digest
|
||||
|
||||
if transfer_info.nil?
|
||||
# The user is asking for an inexistant file.
|
||||
return FileStorage::Errors::FileDoesNotExist.new mid, file_digest
|
||||
end
|
||||
|
||||
# Verify that the chunk is already present.
|
||||
if transfer_info.chunks.select do |v| v == chunk_number end.size != 0
|
||||
raise "non existent chunk or not yet uploaded"
|
||||
end
|
||||
|
||||
# b64 data
|
||||
data = read_a_chunk file_digest, chunk_size, chunk_number
|
||||
b64_encoded_data = Base64.encode data
|
||||
|
||||
# whole file digest
|
||||
digest = transfer_info.file_info.digest
|
||||
|
||||
# about the transfered chunk
|
||||
chunk = Chunk.new chunk_number, transfer_info.file_info.nb_chunks, b64_encoded_data
|
||||
|
||||
FileStorage::Response::GetChunk.new mid, digest, chunk, b64_encoded_data
|
||||
rescue e
|
||||
puts "Error handling read_chunk: #{e.message}"
|
||||
FileStorage::Errors::GenericError.new mid.not_nil!, "Unexpected error: #{e.message}"
|
||||
end
|
||||
|
||||
# the client sent an upload request
|
||||
|
|
@ -99,62 +168,101 @@ class FileStorage::Storage
|
|||
puts "hdl upload: mid=#{request.mid}"
|
||||
pp! request
|
||||
|
||||
# The final path of the file.
|
||||
file_digest = request.file.digest
|
||||
path = get_path file_digest
|
||||
|
||||
# TODO: verify the rights and quotas of the user
|
||||
# file_info attributes: name, size, nb_chunks, digest, tags
|
||||
|
||||
# First: check if the file already exists
|
||||
transfer_info = @db_by_filedigest.get? request.file.digest
|
||||
# First: check if the file already exists.
|
||||
transfer_info = @db_by_filedigest.get? file_digest
|
||||
if transfer_info.nil?
|
||||
# In case file informations aren't already registered
|
||||
# which is normal at this point
|
||||
transfer_info = TransferInfo.new user.uid, request.file
|
||||
@db << transfer_info
|
||||
# which is normal at this point.
|
||||
@db << TransferInfo.new user.uid, request.file
|
||||
else
|
||||
# File information already exists, request may be duplicated
|
||||
# In this case: ignore the upload request
|
||||
# File information already exists, request may be duplicated,
|
||||
# in this case: ignore the upload request.
|
||||
return FileStorage::Errors::FileExists.new mid, file_digest
|
||||
end
|
||||
|
||||
path = "/files/#{user.uid}/#{request.file.digest}.bin"
|
||||
# TODO: store upload request in UserData?
|
||||
|
||||
FileStorage::Response::Upload.new request.mid, path
|
||||
rescue e
|
||||
puts "Error handling upload: #{e.message}"
|
||||
FileStorage::Response::Error.new mid.not_nil!, "Unexpected error: #{e.message}"
|
||||
puts "Error handling upload request: #{e.message}"
|
||||
FileStorage::Errors::GenericError.new mid.not_nil!, "Unexpected error in upload request: #{e.message}"
|
||||
end
|
||||
|
||||
# TODO
|
||||
# The client sent a download request.
|
||||
def download(request : FileStorage::Request::Download, user : UserData)
|
||||
|
||||
puts "hdl download: mid=#{request.mid}"
|
||||
pp! request
|
||||
mid = request.mid
|
||||
mid ||= "no message id"
|
||||
puts "hdl download: mid=#{mid}"
|
||||
|
||||
FileStorage::Response::Download.new request.mid
|
||||
unless (file_digest = request.filedigest).nil?
|
||||
unless (file_transfer = @db_by_filedigest.get? file_digest).nil?
|
||||
# The file exists.
|
||||
# TODO: verify rights here.
|
||||
|
||||
# This is acceptation.
|
||||
# Return some useful values: number of chunks.
|
||||
return FileStorage::Response::Download.new mid, file_transfer.file_info.nb_chunks
|
||||
else
|
||||
return FileStorage::Errors::GenericError.new mid, "Unknown file digest: #{file_digest}"
|
||||
end
|
||||
end
|
||||
|
||||
# TODO: search a file by its name and tags
|
||||
|
||||
# TODO: store download request in UserData?
|
||||
|
||||
# Should have returned by now: file wasn't found.
|
||||
FileStorage::Errors::GenericError.new mid, "File not found with provided parameters."
|
||||
rescue e
|
||||
puts "Error handling download request: #{e.message}"
|
||||
FileStorage::Errors::GenericError.new mid.not_nil!, "Unexpected error in download request: #{e.message}"
|
||||
end
|
||||
|
||||
# Entry point for request management
|
||||
# Each request should have a response.
|
||||
# Then, responses are sent in a single message.
|
||||
def requests(requests : Array(FileStorage::Request),
|
||||
user : UserData,
|
||||
event : IPC::Event::Message) : Array(FileStorage::Response)
|
||||
# def requests(requests : Array(FileStorage::Request),
|
||||
# user : UserData,
|
||||
# event : IPC::Event::Message) : Array(FileStorage::Response)
|
||||
#
|
||||
# puts "hdl request"
|
||||
# responses = Array(FileStorage::Response | FileStorage::Errors).new
|
||||
#
|
||||
# requests.each do |request|
|
||||
# case request
|
||||
# when FileStorage::DownloadRequest
|
||||
# responses << download request, user
|
||||
# when FileStorage::UploadRequest
|
||||
# responses << upload request, user
|
||||
# else
|
||||
# raise "request not understood"
|
||||
# end
|
||||
#
|
||||
# puts
|
||||
# end
|
||||
#
|
||||
# responses
|
||||
# end
|
||||
|
||||
puts "hdl request"
|
||||
responses = Array(FileStorage::Response).new
|
||||
def read_a_chunk(file_digest : String, chunk_size : Int32, chunk_number : Int32)
|
||||
offset = chunk_number * chunk_size
|
||||
buffer_data = Bytes.new chunk_size
|
||||
|
||||
requests.each do |request|
|
||||
case request
|
||||
when FileStorage::DownloadRequest
|
||||
responses << download request, user
|
||||
when FileStorage::UploadRequest
|
||||
responses << upload request, user
|
||||
else
|
||||
raise "request not understood"
|
||||
end
|
||||
|
||||
puts
|
||||
path = get_fs_path file_digest
|
||||
real_size = 0
|
||||
File.open(path, "rb").read_at offset, chunk_size do |buffer|
|
||||
real_size = buffer.read buffer_data
|
||||
end
|
||||
|
||||
responses
|
||||
buffer_data[0..real_size-1]
|
||||
end
|
||||
|
||||
def remove_chunk_from_db(transfer_info : TransferInfo, chunk_number : Int32)
|
||||
|
|
@ -162,24 +270,21 @@ class FileStorage::Storage
|
|||
@db_by_filedigest.update transfer_info.file_info.digest, transfer_info
|
||||
end
|
||||
|
||||
def write_a_chunk(userid : String,
|
||||
file_info : FileStorage::FileInfo,
|
||||
def write_a_chunk(digest : String,
|
||||
chunk_size : Int32,
|
||||
chunk_number : Int32,
|
||||
data : Bytes)
|
||||
|
||||
# storage: @root/files/userid/fileuuid.bin
|
||||
dir = "#{@root}/files/#{userid}"
|
||||
# storage: @root/files/digest
|
||||
path = get_fs_path digest
|
||||
|
||||
FileUtils.mkdir_p dir
|
||||
|
||||
path = "#{dir}/#{file_info.digest}.bin"
|
||||
# Create file if non existant
|
||||
File.open(path, "a+") do |file|
|
||||
end
|
||||
|
||||
# Write in it
|
||||
File.open(path, "ab") do |file|
|
||||
offset = chunk_number * FileStorage.message_buffer_size
|
||||
offset = chunk_number * chunk_size
|
||||
file.seek(offset, IO::Seek::Set)
|
||||
file.write data
|
||||
end
|
||||
|
|
|
|||
|
|
@ -24,7 +24,6 @@ class FileStorage
|
|||
|
||||
# private function
|
||||
def self.data_digest(data : Bytes)
|
||||
|
||||
iodata = IO::Memory.new data, false
|
||||
buffer = Bytes.new FileStorage.file_reading_buffer_size
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,45 @@
|
|||
class FileStorage
|
||||
def self.message_buffer_size
|
||||
def self.file_reading_buffer_size
|
||||
def self.data_digest(data : Bytes)
|
||||
def self.file_digest(file : File)
|
||||
end
|
||||
|
||||
class FileStorage::Chunk
|
||||
n : Int32 # chunk's number
|
||||
on : Int32 # number of chunks
|
||||
digest : String # digest of the current chunk
|
||||
|
||||
initialize(@n, @on, data)
|
||||
end
|
||||
|
||||
class FileStorage::FileInfo
|
||||
name : String
|
||||
size : UInt64
|
||||
nb_chunks : Int32
|
||||
digest : String
|
||||
tags : Array(String)
|
||||
end
|
||||
|
||||
class TransferInfo
|
||||
owner : Int32
|
||||
file_info : FileStorage::FileInfo
|
||||
chunks : Array(Int32)
|
||||
|
||||
initialize(@owner, @file_info)
|
||||
end
|
||||
|
||||
# Keep track of connected users and their requests.
|
||||
class FileStorage::UserData
|
||||
property uid : Int32
|
||||
property uploads : Array(Upload) # NOT USED.
|
||||
property downloads : Array(Download) # NOT USED.
|
||||
|
||||
initialize(@uid, @uploads = Array(Upload).new, @downloads = Array(Download).new)
|
||||
end
|
||||
|
||||
root/
|
||||
files/ : actual files
|
||||
meta/ : DODB TransferInfo
|
||||
users/ : DODP UserData (for later use: quotas, rights)
|
||||
|
||||
Loading…
Reference in New Issue