contracts: Add storage deposits (#10082)

* Frame no longer needs to be mutable (refactoring artifact)

* Remove Contract/Tombstone deposit

* Add StorageMeter

* cargo fmt

* Fix weight annotation

* cargo run --quiet --release --features=runtime-benchmarks --manifest-path=bin/node/cli/Cargo.toml -- benchmark --chain=dev --steps=50 --repeat=20 --pallet=pallet_contracts --extrinsic=* --execution=wasm --wasm-execution=compiled --heap-pages=4096 --output=./frame/contracts/src/weights.rs --template=./.maintain/frame-weight-template.hbs

* Simplify keep check for contract accounts

- Make sure that the "base deposit" for each contract >= ed
- Remove now obsolete checks when sneding away free balance

* Remove unused imports and functions

* Rename storage_limit to storage_deposit_limit

* cargo fmt

* Fix typo

Co-authored-by: Michael Müller <michi@parity.io>

* Finish up rename of storage_limit

* Fix rpc tests

* Make use of `StorageDepositLimitTooHigh`

* Add tests and fix bugs discovered by tests

* Add storage migration

* Don't use u128 in RPC

* Fix weight of migration

* Rename `endowment` to `value`

* Fix bug where contract couldn't get funded by a storage deposit

- Make sure that contract gets funded from deposits before value is transferred
- Don't reserve value at origin because otherwise funding isn't possible
	- Just transfer free balance and reserve it after the transfer
- When refunding make sure that this refund can't dust the contract
	- Can only happen after a runtime upgrade where costs where upped
- Add more tests

* Apply suggestions from code review

Co-authored-by: Andrew Jones <ascjones@gmail.com>

* Remove unused `fn storage_meter`

* Fix copy pasta doc error

* Import `MaxEncodeLen` from codec

* Beautify RPC trait bounds

* Add re-instrument behaviour to dispatchable doc

* Make sure a account won't be destroyed a refund after a slash

* Apply suggestions from code review

Co-authored-by: Andrew Jones <ascjones@gmail.com>

* Update `Storage::write` docs

* Improve doc

* Remove superflous conditional

* Typos

* Remove superflous clone (refactoring artifact)

* Apply suggestions from code review

Co-authored-by: Andrew Jones <ascjones@gmail.com>

Co-authored-by: Parity Bot <admin@parity.io>
Co-authored-by: Michael Müller <michi@parity.io>
Co-authored-by: Andrew Jones <ascjones@gmail.com>

substrate/bin/node/executor/tests/basic.rs

@@ -685,8 +685,6 @@ fn deploying_wasm_contract_should_work() {
 
 	let addr = pallet_contracts::Pallet::<Runtime>::contract_address(&charlie(), &transfer_ch, &[]);
 
-	let subsistence = pallet_contracts::Pallet::<Runtime>::subsistence_threshold();
-
 	let time = 42 * 1000;
 	let b = construct_block(
 		&mut new_test_ext(compact_code_unwrap()),
@@ -701,8 +699,9 @@ fn deploying_wasm_contract_should_work() {
 				signed: Some((charlie(), signed_extra(0, 0))),
 				function: Call::Contracts(
 					pallet_contracts::Call::instantiate_with_code::<Runtime> {
-						endowment: 1000 * DOLLARS + subsistence,
+						value: 0,
 						gas_limit: 500_000_000,
+						storage_deposit_limit: None,
 						code: transfer_code,
 						data: Vec::new(),
 						salt: Vec::new(),
@@ -715,6 +714,7 @@ fn deploying_wasm_contract_should_work() {
 					dest: sp_runtime::MultiAddress::Id(addr.clone()),
 					value: 10,
 					gas_limit: 500_000_000,
+					storage_deposit_limit: None,
 					data: vec![0x00, 0x01, 0x02, 0x03],
 				}),
 			},

substrate/bin/node/executor/tests/common.rs

@@ -119,7 +119,7 @@ pub fn executor_call<
 		hash: sp_core::blake2_256(&code).to_vec(),
 		heap_pages: heap_pages.and_then(|hp| Decode::decode(&mut &hp[..]).ok()),
 	};
-
+	sp_tracing::try_init_simple();
 	executor().call::<R, NC>(&mut t, &runtime_code, method, data, use_native, native_call)
 }