Tadeo Hepperle
388ebac993
* integrate scale-typegen, remove types mod * reintroduce default substitutes and derives * support runtime_types only again * generating polkadot.rs ok * update scale-typegen to discrete error types * scale-typegen-api-changes * add note about UncheckedExtrinsic in default substitutes * add resursive attributes and derives * adjust example where Clone bound recursive * move scale-typegen dependency to workspace * expose default typegen settings * lightclient: Fix wasm socket closure called after being dropped (#1289) * lightclient: Close wasm socket while dropping from connecting state Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * lightclient: Construct one time only closures Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * testing: Enable console logs for lightclient WASM testing Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * lightclient: Separate wakes and check connectivity on poll_read Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * lightclient: Close the socket depending on internal state Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * Revert "lightclient: Separate wakes and check connectivity on poll_read" This reverts commit 866094001d4c0b119a80ed681a74b323f74eae1b. * lightclient: Return pending if socket is opening from poll_read Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * lightclient: Close the socket on `poll_close` Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * lightclient: Reset closures on Drop to avoid recursive invokation Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * lightclient: Close the socket if not already closing Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * workflows: Install rustup component for building substrate (#1295) Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * cli: Command to fetch chainSpec and optimise its size (#1278) * cli: Add chainSpec command Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * cli/chainSpec: Move to dedicated module Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * cli: Compute the state root hash Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * cli: Remove code substitutes Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * artifacts: Update polkadot.json Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * scripts: Generate the chain spec Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * cli: Remove testing artifacts Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * cli: Fix clippy Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * cli: Apply rustfmt Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * cli: Introduce feature flag for smoldot dependency Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * cli: Rename chain-spec to chain-spec-pruning Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * scripts: Update chain-spec command Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> * remove comments and unused args * Update substrate- and signer-related dependencies (#1297) * update crypto dependencies, adjust keypair * add scale_info::TypeInfo derive in some places * add multi signature derive * fix lock file * fix lock file again :| * adjust to new interface in scale-typegen * use released scale typegen * reintroduce type aliases * introduce type aliases again using scale-typegen * cargo fmt and clippy * reconcile changes with master branch * update polkadot.rs * bump scale-typgen to fix substitution * subxt macro, helpful error messages * adjust ui tests * fix lock file * format * Update macro/src/lib.rs Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com> * incorperate nits * update Cargo.lock to avoid compatibility issues --------- Signed-off-by: Alexandru Vasile <alexandru.vasile@parity.io> Co-authored-by: Alexandru Vasile <60601340+lexnv@users.noreply.github.com> Co-authored-by: Niklas Adolfsson <niklasadolfsson1@gmail.com>
parachain-example
This example showcases working with Subxt and Zombienet to try out connecting to a locally deployed parachain, here "Statemint", also known as "Asset Hub".
Running the example
1. Install zombienet
Zombienet is a tool for quickly spinning up a (local) blockchain network. We will use it to start up a local Asset Hub for us.
Please follow the install guide in the zombienet github repo to install it.
2. polkadot
We need a relay chain. Build the polkadot binary from the polkadot github repo and install it in your path:
git clone https://github.com/paritytech/polkadot.git
cd polkadot
cargo install --path .
3. polkadot-parachain
The Asset Hub is part of the cumulus github repo, an SDK for developing
parachains. Building the cumulus workspace produces a binary called polkadot-parachain which can be used to run
Asset Hub nodes.
git clone https://github.com/paritytech/cumulus.git
cd cumulus
cargo install --path polkadot-parachain
4. Run the parachain locally
With these binaries installed, Zombienet can now get the parachain running locally from a configuration file, asset-hub-zombienet.toml
in this case. We need to have at least 2 validator nodes running via the polkadot binary, and an Asset Hub node running via the
polkadot-parachain binary. Zombienet starts these up, and gets the parachain registered with the validator nodes for us. To do that,
run:
zombienet -p native spawn asset-hub-zombienet.toml
Zombienet uses Kubernetes by default, but we can use it without Kubernetes by providing the -p native flag.
You might have noticed that we use chain = "rococo-local" in the asset-hub-zombienet.toml file for the relay chain. This is just to
make the epoch time shorter and should have no effect on your interactions with the parachain. Polkadot / Kusama / Rococo have different
epoch times of 24h / 2h / 2min respectively.
5. Run the example
The parachain is only registered after the first epoch. So after the previous step, we need to wait 2 minutes until the parachain becomes interactive and produces blocks. At this point, we can run:
cargo run --bin parachain-example
To run our example code.
Dev notes
We can obtain the metadata for Statemint via the subxt cli tool, like so:
subxt metadata --url wss://polkadot-asset-hub-rpc.polkadot.io:443 > statemint_metadata.scale
It is important to explicitly specify the port as 443.
One way to find a suitable URL to obtain this from is by looking through the sidebar on Polkadot.js to find the Asset Hub entry, and seeing which RPC node URLs it uses.