Add a prepend header feature to polkatool #190
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
sourabhniyogi
added a commit
to jam-duna/jamtestnet
that referenced
this pull request
Nov 7, 2024
1. safrole - traces: RAW kv state + state_snapshots: dev-friendly C1-C15 state To support JAM implementers to derive each others state roots, extending to service related storage keys, here we publish a keyvals state trace format with a full range of 0x00..00 to 0xFF..FF in `traces` while leaving developer-friendly `state_snapshots` that focus on the C1-C15. With both state dumps, we can have teams collaborate: * deriving the stateroot from key-value pair combinations (which match the blocks parent state root) in `traces` * making sure values in `traces` correspond to the JAM codec encoding of the data in `state_snapshots` 2. Implementation of bootstrap service code * `main.rs` contains an implementation of the above bootstrap service, which is included in the [genesis state](../../../traces/safrole/genesis.json) - The `refine` service expects a `codehash` (32 bytes) starting at `0xFEFF0004` - The `accumulate` does a `new` and then a `write` * `bootstrapblob.pvm` has the disassembleable code (see below `polkatool`) with "magic bytes" * `bootstrap.pvm` has the JAM-ready code blob (no magic bytes). We used `polkatool` to do this, with [PR #190](paritytech/polkavm#190) actually mapping `main.rs` into the above. See links: [Building JAM Services in Rust](https://forum.polkadot.network/t/building-jam-services-in-rust/10161) for background Our test does the following: * submits a few service code blobs (fib, trib, megatron) in 3 work packages using the bootstrap service "0" * for each work package, we retrieve the new service indexes left by the `write` after "rho" is cleared (the service has been accumulated) * our test then runs work packages through fib + trib. Our next goal is to do ordered accumulation with queues.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR is based on PR76 and it is now possible to use polkatool to generate JAM-ready toplevel service blobs (as defined in equation 258 in A.7 of GP v0.4.1).