Class: CakeDB
- Inherits:
-
Object
- Object
- CakeDB
- Defined in:
- lib/cakedb.rb
Instance Method Summary collapse
- #allSince(stream, ts) ⇒ Object
- #data_in(length) ⇒ Object
- #get_sid(stream) ⇒ Object
- #get_tasking(msg) ⇒ Object
-
#initialize(server = "127.0.0.1", port = 8888, lvl = 0) ⇒ CakeDB
constructor
A new instance of CakeDB.
- #lastAt(stream, ts) ⇒ Object
-
#rangeQuery(stream, ts, tsend) ⇒ Object
Perform a range query.
- #read(stream, ts, tsend = nil, mode = 4) ⇒ Object
- #write(stream, payload) ⇒ Object
Constructor Details
#initialize(server = "127.0.0.1", port = 8888, lvl = 0) ⇒ CakeDB
Returns a new instance of CakeDB.
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# File 'lib/cakedb.rb', line 6 def initialize( server="127.0.0.1", port=8888, lvl=0 ) #puts "Connection Initiated" @server = TCPSocket.new(server, port) @s = server @p = port @sids = {} @loggingLevel = lvl @timeout = 30 end |
Instance Method Details
#allSince(stream, ts) ⇒ Object
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# File 'lib/cakedb.rb', line 108 def allSince(stream, ts) #allSince is mode 4 return read(stream, ts, nil, 4) end |
#data_in(length) ⇒ Object
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# File 'lib/cakedb.rb', line 45 def data_in(length) data = @server.recv(length) got = data.bytesize timeOver = Time.now + @timeout while got < length data += @server.recv(length-got) got = data.bytesize if Time.now > timeOver if @loggingLevel == 1 puts "Timeout Hit. GT #{timeOver}" end @server.close() @sids = {} @server = TCPSocket.new(@s, @p) raise "Timeout on incomplete read, returning what I had" #return data end if @loggingLevel == 2 && got < length puts "Incomplete read on payload receive" puts "Raw Data: #{data}" puts "Length: #{length} bytes" puts "Raw Data length: #{data.bytesize}" end end return data end |
#get_sid(stream) ⇒ Object
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# File 'lib/cakedb.rb', line 15 def get_sid(stream) if @sids[stream].nil? @server.write [stream.bytesize,5].pack("L>S>") @server.write stream @server.flush sid = data_in(2).unpack("S>") @sids[stream] = sid[0] return sid[0] else return @sids[stream] end end |
#get_tasking(msg) ⇒ Object
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# File 'lib/cakedb.rb', line 36 def get_tasking(msg) details = Hash.new details["database"] = msg["region"] details["task"] = msg["tasking"] details["date"] = msg["date"] details["rediskey"] = details["database"] + "-" + details["task"] return details end |
#lastAt(stream, ts) ⇒ Object
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# File 'lib/cakedb.rb', line 113 def lastAt(stream, ts) #lastAt is mode 6 return read(stream, ts, nil, 6) end |
#rangeQuery(stream, ts, tsend) ⇒ Object
Perform a range query
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# File 'lib/cakedb.rb', line 118 def rangeQuery(stream, ts, tsend) return read(stream, ts, tsend, 3) end |
#read(stream, ts, tsend = nil, mode = 4) ⇒ Object
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# File 'lib/cakedb.rb', line 72 def read(stream, ts, tsend=nil, mode=4) #Issue the query sid = get_sid(stream) if tsend @server.write [18,mode,sid,ts,tsend].pack("L>S>S>Q>Q>") else @server.write [10,mode,sid,ts].pack("L>S>S>Q>") end #@server.write [headersz,mode,sid,ts].pack("L>S>S>Q>") @server.flush result = Array.new #How much data we gotta get? recv_total = data_in(4).unpack("L>")[0] #puts "total is #{recv_total}" if recv_total > 0 counter = 0 #Recive the result while recv_total > 0 #Get the header - 12 bytes header_whole = data_in(12) header = header_whole.unpack("Q>L>") #recieve the data, header says how much result[counter] = Hash.new result[counter]["ts"] = header[0] result[counter]["data"] = data_in(header[1]) recv_total = recv_total - header[1] - 12 counter+=1 end else # I SEE NOTHING! end return result end |
#write(stream, payload) ⇒ Object
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# File 'lib/cakedb.rb', line 28 def write(stream,payload) sid = get_sid(stream) #puts sid @server.write [(payload.bytesize + 2),2,sid].pack("L>S>S>") @server.write payload @server.flush end |