clocks
Simulates various clock algorithms. Currently supports Lamport timestamps and vector clocks.
Usage:
python clocks.py [lamport|vector]
Commands
| Commands | Description |
|---|---|
add [<a> ...] |
Adds node(s) |
list |
Lists nodes |
send <a> <b> |
Sends a message from a to b |
? |
Prints a help message |
quit |
Exits the simulator |
Example
$ python clocks.py vector
[?] Enter command (add/list/send/quit/?): add a b c
[*] Added node a
[*] Added node b
[*] Added node c
[?] Enter command (add/list/send/quit/?): send c b
[*] Node c: Sending clock message <{'c': 1}>
[*] Node b: Receiving clock message <{'b': 0}> -> <{'c': 1, 'b': 1}>
[?] Enter command (add/list/send/quit/?): send b a
[*] Node b: Sending clock message <{'c': 1, 'b': 2}>
[*] Node a: Receiving clock message <{'a': 0}> -> <{'a': 1, 'c': 1, 'b': 2}>
[?] Enter command (add/list/send/quit/?): send b c
[*] Node b: Sending clock message <{'c': 1, 'b': 3}>
[*] Node c: Receiving clock message <{'c': 1}> -> <{'c': 2, 'b': 3}>
[?] Enter command (add/list/send/quit/?): send a b
[*] Node a: Sending clock message <{'a': 2, 'c': 1, 'b': 2}>
[*] Node b: Receiving clock message <{'c': 1, 'b': 3}> -> <{'a': 2, 'c': 1, 'b': 4}>
[?] Enter command (add/list/send/quit/?): send c a
[*] Node c: Sending clock message <{'c': 3, 'b': 3}>
[*] Node a: Receiving clock message <{'a': 2, 'c': 1, 'b': 2}> -> <{'a': 3, 'c': 3, 'b': 3}>
[?] Enter command (add/list/send/quit/?): send b c
[*] Node b: Sending clock message <{'a': 2, 'c': 1, 'b': 5}>
[*] Node c: Receiving clock message <{'c': 3, 'b': 3}> -> <{'a': 2, 'c': 4, 'b': 5}>
[?] Enter command (add/list/send/quit/?): send c a
[*] Node c: Sending clock message <{'a': 2, 'c': 5, 'b': 5}>
[*] Node a: Receiving clock message <{'a': 3, 'c': 3, 'b': 3}> -> <{'a': 4, 'c': 5, 'b': 5}>
[?] Enter command (add/list/send/quit/?): list
[*] Listing 3 nodes...
[*] Node a <{'a': 4, 'c': 5, 'b': 5}>
[*] Node c <{'a': 2, 'c': 5, 'b': 5}>
[*] Node b <{'a': 2, 'c': 1, 'b': 5}>
[?] Enter command (add/list/send/quit/?): quit