* client/authority-discovery: Limit number of connections to authorities
Instead of connecting to all sentry nodes of all authorities, with this
patch the authority discovery module does the following:
- Choose one sentry node per authority at random.
- Choose MAX_NUM_AUTHORITY_CONN out of the above at random.
The module uses randomness to prevent hot spots, e.g. all nodes trying
to connect to a single node. If the authority discovery module would
choose the nodes to connect to at random on each new address that it
learns of, the node would go through a lot of connection churn. Instead
it creates a random seed at start up and uses this seed for its RNG on
each update cycle.
* client/authority-discovery: Extract address cache into own module
* client/authority-discovery/src/addr_cache: Add basic unit tests
* client/authority-discovery: Replace unwrap with expect on [u8] cmp
* .maintain/sentry-node/docker-compose.yml: Prefix endpoint flags
* client/authority-discovery/src/addr_cache: Use sort_unstable and cmp
* client/authority-discovery: Use BTreeMap in addr_cache for sorted iter
To reduce connection churn it is preferrable to have `get_subset` of the
`addr_cache` to return the same result on repeated calls. `get_subset`
iterates a map. To make the process of iteration deterministic, use a
`BTreeMap` instead of a `HashMap`.
* Make wasm-builder remove invalid members
Wasm-builder now removes members that point to packages that do not
exist anymore or that were renamed. Up to now, the build would fail and
required manual fixing.
* Fixes build
* Fix cli for structopt 0.3.7 and pin to that version
This is just some hotfix to make everything compile. In the future it
will require another pr to not depend on internals of StructOpt, but
that will probably also require some additions to StructOpt itself. To
not break the code again with another StructOpt, this also pins the
StructOpt version.
* Fix benches
* Fix for fix
* Clean imports in wasmi_execution
* Replace `interpret_runtime_api_result` with `pointer_and_len_from_u64`.
* Extract sc-executor-common crate
* Extract `sc-executor-wasmi` into its own crate
* Extract `sc-executor-wasmtime` into its own crate.
* Add missing headers.
* Clean and docs
* Docs for sc-executor-wasmi
* Expand a comment about sandboxing
* Fix assert_matches
* Rename (un)pack_ptr_and_len and move them into util module
* Remove wasmtime errors in sc-executor-common
* Make `decl_error!` errors usable
This pr implements support for returning errors of different pallets in
a pallet. These errors need to be declared with `decl_error!`.
The pr changes the following:
- Each dispatchable function now returns a `DispatchResult` which is an
alias for `Result<(), DispatchError>`.
- `DispatchError` is an enum that has 4 variants:
- `Other`: For storing string error messages
- `CannotLookup`: Variant that is returned when something returns a
`sp_runtime::LookupError`
- `BadOrigin`: Variant that is returned for any kind of bad origin
- `Module`: The error of a specific module. Contains the `index`,
`error` and the `message`. The index is the index of the module in
`construct_runtime!`. `error` is the index of the error in the error
enum declared by `decl_error!`. `message` is the message to the error
variant (this will not be encoded).
- `construct_runtime!` now creates a new struct `ModuleToIndex`. This
struct implements the trait `ModuleToIndex`.
- `frame_system::Trait` has a new associated type: `ModuleToIndex` that
expects the `ModuleToIndex` generated by `construct_runtime!`.
- All error strings returned in any module are being converted now to `DispatchError`.
- `BadOrigin` is the default error returned by any type that implements `EnsureOrigin`.
* Fix frame system benchmarks
Nikolay Volf