python3 example

example/python3/app.py

@@ -0,0 +1,92 @@
+import sys
+
+from tmsp.wire import hex2bytes, decode_big_endian, encode_big_endian
+from tmsp.server import TMSPServer
+from tmsp.reader import BytesBuffer
+
+
+class CounterApplication():
+
+    def __init__(self):
+        self.hashCount = 0
+        self.txCount = 0
+        self.commitCount = 0
+
+    def open(self):
+        return CounterAppContext(self)
+
+
+class CounterAppContext():
+
+    def __init__(self, app):
+        self.app = app
+        self.hashCount = app.hashCount
+        self.txCount = app.txCount
+        self.commitCount = app.commitCount
+        self.serial = False
+
+    def echo(self, msg):
+        return msg, 0
+
+    def info(self):
+        return ["hash, tx, commit counts:%d, %d, %d" % (self.hashCount,
+                                                        self.txCount,
+                                                        self.commitCount)], 0
+
+    def set_option(self, key, value):
+        if key == "serial" and value == "on":
+            self.serial = True
+        return 0
+
+    def append_tx(self, txBytes):
+        if self.serial:
+            txByteArray = bytearray(txBytes)
+            if len(txBytes) >= 2 and txBytes[:2] == "0x":
+                txByteArray = hex2bytes(txBytes[2:])
+            txValue = decode_big_endian(
+                BytesBuffer(txByteArray), len(txBytes))
+            if txValue != self.txCount:
+                return None, 1
+        self.txCount += 1
+        return None, 0
+
+    def get_hash(self):
+        self.hashCount += 1
+        if self.txCount == 0:
+            return "", 0
+        h = encode_big_endian(self.txCount, 8)
+        h.reverse()
+        return str(h), 0
+
+    def commit(self):
+        self.commitCount += 1
+        return 0
+
+    def rollback(self):
+        return 0
+
+    def add_listener(self):
+        return 0
+
+    def rm_listener(self):
+        return 0
+
+    def event(self):
+        return
+
+
+if __name__ == '__main__':
+    l = len(sys.argv)
+    if l == 1:
+        port = 46658
+    elif l == 2:
+        port = int(sys.argv[1])
+    else:
+        print("too many arguments")
+        quit()
+
+    print('TMSP Demo APP (Python)')
+
+    app = CounterApplication()
+    server = TMSPServer(app, port)
+    server.main_loop()