Remove minting policy script from ChainState

[ch1bo]

The actual script is easily computd from the linked hydra-plutus script code using the seedTxIn and this will substantially reduce persisted and logged size.

Rough estimate: By watching the state directory of e2e test "two heads on the same network do not conflict" I could see ~11MB use on master and around ~6.2MB use with this branch.

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• CHANGELOG updated or not needed
• Documentation updated or not needed
• Haddocks updated or not needed
• No new TODOs introduced or explained herafter

[github-actions]

Transactions Costs

Sizes and execution budgets for Hydra protocol transactions. Note that unlisted parameters are currently using arbitrary values and results are not fully deterministic and comparable to previous runs.

Metadata
Generated at	2023-06-15 13:22:24.983821298 UTC
Max. memory units	14000000
Max. CPU units	10000000000
Max. tx size (kB)	16384

Script summary

Name	Hash	Size (Bytes)
νInitial	2212a4ee618434b9b2f366d7c330dbdfb5c7072e793a850fd0de6ddd	4294
νCommit	69e1ccf9ad73dc6d37a5bc8de5aec86f3c4c1710fe5fd334e0e16b18	2124
νHead	8ae095dca4d14a1b8edffb37faa6c84ec60340fbf389a62f027e0b76	9355
μHead	33642a45c7fbb955ce1704ef09229bb211bf9af9980530db28c6aafe*	4148

• The minting policy hash is only usable for comparison. As the script is parameterized, the actual script is unique per Head.

Cost of Init Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	4739	12.92	5.06	0.50
2	4944	16.39	6.41	0.55
3	5155	19.59	7.64	0.59
5	5561	23.87	9.24	0.65
10	6584	36.07	13.85	0.83
38	12328	99.94	37.86	1.77

Cost of Commit Transaction

This is using ada-only outputs for better comparability.

UTxO	Tx size	% max Mem	% max CPU	Min fee ₳
1	599	14.98	5.74	0.34
2	787	19.57	7.70	0.40
3	975	24.66	9.84	0.46
5	1345	36.15	14.59	0.61
10	2287	71.73	28.85	1.04
13	2846	98.11	39.18	1.35

Cost of CollectCom Transaction

Parties	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
1	57	815	27.93	10.85	0.49
2	114	1136	43.63	17.08	0.68
3	171	1457	61.33	24.16	0.88
4	227	1777	82.31	32.58	1.13

Cost of Close Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	672	19.33	8.77	0.40
2	804	20.27	9.68	0.42
3	969	21.37	10.82	0.44
5	1299	24.16	13.33	0.50
10	2120	31.12	19.62	0.64
50	8725	87.17	69.99	1.74

Cost of Contest Transaction

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	676	24.34	10.47	0.45
2	842	26.49	12.01	0.49
3	1013	28.20	13.38	0.52
5	1336	31.20	15.95	0.58
10	2160	40.20	22.97	0.74
44	7779	98.46	69.53	1.79

Cost of Abort Transaction

Some variation because of random mixture of still initial and already committed outputs.

Parties	Tx size	% max Mem	% max CPU	Min fee ₳
1	4856	22.40	9.38	0.61
2	5176	36.59	15.53	0.79
3	5500	53.61	22.94	0.99
4	5676	68.21	29.12	1.16
5	6000	90.40	38.81	1.42

Cost of FanOut Transaction

Involves spending head output and burning head tokens. Uses ada-only UTxO for better comparability.

Parties	UTxO	UTxO (bytes)	Tx size	% max Mem	% max CPU	Min fee ₳
5	0	0	4764	8.66	3.57	0.46
5	1	56	4795	10.06	4.39	0.47
5	5	284	4944	15.64	7.69	0.55
5	10	570	5124	22.61	11.82	0.64
5	20	1138	5483	36.56	20.07	0.83
5	30	1707	5844	50.52	28.33	1.02
5	40	2274	6204	64.49	36.60	1.21
5	50	2848	6569	78.46	44.87	1.40
5	65	3698	7095	99.42	57.28	1.68

[github-actions]

Test Results

322 tests  ±0   316 ✔️ ±0   22m 41s ⏱️ - 2m 51s
110 suites ±0       6 💤 ±0 
    6 files   ±0       0 ❌ ±0 

Results for commit 2b8ec49. ± Comparison against base commit 60a73e0.

♻️ This comment has been updated with latest results.

[pgrange]

That should definitely help with our logs. Awesome 🎉

[abailly-iohk]

Not sure where those came from 🤔 ?

[abailly-iohk]

suggestion: move to a github issue? Stuff in code comments have a natural tendency to get lost in the sands of time and trumped by other priorities

[ch1bo]

Was not intending to commit this and I have written a bug report yesterday about this: #931