Similar to the same type in the protocol, see Tezos_protocol_environment.PROTOCOL.operation

Mempool configuration that groups both the plugin config (e.g. minimal fee to pass the pre_filter) and the bounding config (e.g. max number of valid operations in the mempool).

Default mempool configuration.

Encoding for config.

Internally an object without any variable fields.

The type implemented by Tezos_store.Store.chain_store in production, and mocked in tests

The state used internally by this module. Created by create and then passed back and possibly updated by add_operation and remove_operation.

This state notably contains a representation of the protocol mempool, as well as the bounding state.

Create an empty state based on the head block.

Called only once when a prevalidator starts.

Create a new empty state based on the head block.

The previous state must be provided (even when it was based on a different block). Indeed, parts of it are recycled to make this function more efficient than create.

Light preliminary checks that should be performed on arrival of an operation and after a flush of the prevalidator.

See Protocol_plugin.T.Plugin.pre_filter.

Contain the hash and new classification of any operations that had to be removed to make room for a newly added operation.

Result of add_operation.

Contain the updated (or unchanged) state t, the operation (in which the signature_checked field has been updated if appropriate), its classification, and the potential replacements.

Invariant: replacements can only be non-empty when the classification is `Prechecked.

Try and add an operation to the protocol's mempool; also ensure that this mempool remains bounded (in terms of both operation count and total byte size; the bounds are specified in the config).

See add_result for a description of the output.

Remove an operation from the state.

The state remains unchanged when the operation was not present (though not physically equal to the input state).