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Piet
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### This PR is a port of this [PR for substrate](https://github.com/paritytech/substrate/pull/13013) by @kianenigma Add infrastructure needed to have a Pallet::decode_entire_state(), which makes sure all "typed" storage items defined in the pallet are decode-able. This is not enforced in any way at the moment. Teams who wish to integrate/use this in the try-runtime feature flag should add frame_support::storage::migration::EnsureStateDecodes as the LAST ITEM of the runtime's custom migrations, and pass it to frame-executive. This will make it usable in try-runtime on-runtime-upgrade. This now catches cases like https://github.com/paritytech/polkadot-sdk/pull/1969: ```pre ERROR runtime::executive] failed to decode the value at key: Failed to decode value at key: 0x94eadf0156a8ad5156507773d0471e4ab8ebad86f546c7e0b135a4212aace339. Storage info StorageInfo { pallet_name: Ok("ParaScheduler"), storage_name: Ok("AvailabilityCores"), prefix: Err(Utf8Error { valid_up_to: 0, error_len: Some(1) }), max_values: Some(1), max_size: None }. Raw value: Some("0x0c010101010101") ``` ... or:  Closes #241 --------- Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io> Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>
20 lines
546 B
Plaintext
20 lines
546 B
Plaintext
title: Introduce state decoding check after runtime upgrades.
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doc:
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- audience: Core Dev
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description: |
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Adds a check to the try-runtime logic that will verify that all pallet on-chain storage still decodes. This can help to spot missing migrations before they become a problem. The check is enabled as soon as the `--checks` option of the `try-runtime` CLI is not `None`.
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migrations:
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db: []
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runtime: []
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crates:
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- name: frame-support
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semver: minor
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- name: frame-support-procedural
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semver: minor
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host_functions: []
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