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https://github.com/status-im/nimbus-eth1.git
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3936d4d0ad
* Set scheduler state as part of the backend descriptor details: Moved type definitions `QidLayoutRef` and `QidSchedRef` to `desc_structural.nim` so that it shares the same folder as `desc_backend.nim` * Automatic filter queue table initialisation in backend details: Scheduler can be tweaked or completely disabled * Updated backend unit tests details: + some code clean up/beautification, reads better now + disabled persistent filters so that there is no automated filter management which will be implemented next * Prettify/update unit tests source code details: Mostly replacing the `check()` paradigm by `xCheck()` * Somewhat simplified backend type management why: Backend objects are labelled with a `BackendType` symbol where the `BackendVoid` label is implicitly assumed for a `nil` backend object reference. To make it easier, a `kind()` function is used now applicable to `nil` references as well. * Fix DB storage layout for filter objects why: Need to store the filter ID with the object * Implement reverse [] index on fifo why: An integer index argument on `[]` retrieves the QueueID (label) of the fifo item while a QueueID argument on `[]` retrieves the index (so it is inverse to the former variant). * Provide iterator over filters as fifo why: This iterator goes along the cascased fifo structure (i.e. in historical order)
88 lines
3.0 KiB
Nim
88 lines
3.0 KiB
Nim
# nimbus-eth1
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# Copyright (c) 2021 Status Research & Development GmbH
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# Licensed under either of
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# * Apache License, version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or
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# http://www.apache.org/licenses/LICENSE-2.0)
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# * MIT license ([LICENSE-MIT](LICENSE-MIT) or
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# http://opensource.org/licenses/MIT)
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# at your option. This file may not be copied, modified, or distributed
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# except according to those terms.
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{.push raises: [].}
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import
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../aristo_desc,
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../aristo_desc/desc_backend
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const
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verifyIxId = true # and false
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## Enforce session tracking
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type
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BackendType* = enum
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BackendVoid ## For providing backend-less constructor
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BackendMemory
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BackendRocksDB
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StorageType* = enum
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## Storage types, key prefix
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Oops = 0
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AdmPfx = 1 ## Admin data, e.g. ID generator
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VtxPfx = 2 ## Vertex data
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KeyPfx = 3 ## Key/hash data
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FilPfx = 4 ## Filter logs (to revert to earlier state)
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AdminTabID* = distinct uint64
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## Access keys for admin table records. When exposed (e.g. when itereating
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## over the tables), this data type is to be used.
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TypedBackendRef* = ref object of BackendRef
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beKind*: BackendType ## Backend type identifier
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when verifyIxId:
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txGen: uint ## Transaction ID generator (for debugging)
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txId: uint ## Active transaction ID (for debugging)
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TypedPutHdlErrRef* = ref object of RootRef
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case pfx*: StorageType ## Error sub-table
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of VtxPfx, KeyPfx:
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vid*: VertexID ## Vertex ID where the error occured
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of FilPfx:
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qid*: QueueID ## Ditto
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of AdmPfx, Oops:
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discard
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code*: AristoError ## Error code (if any)
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TypedPutHdlRef* = ref object of PutHdlRef
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error*: TypedPutHdlErrRef ## Track error while collecting transaction
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when verifyIxId:
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txId: uint ## Transaction ID (for debugging)
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const
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AdmTabIdIdg* = AdminTabID(0) ## Access key for vertex ID generator state
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AdmTabIdFqs* = AdminTabID(1) ## Access key for filter queue states
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# ------------------------------------------------------------------------------
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# Public helpers
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# ------------------------------------------------------------------------------
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proc beginSession*(hdl: TypedPutHdlRef; db: TypedBackendRef) =
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when verifyIxId:
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doAssert db.txId == 0
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if db.txGen == 0:
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db.txGen = 1
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db.txId = db.txGen
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hdl.txId = db.txGen
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db.txGen.inc
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proc verifySession*(hdl: TypedPutHdlRef; db: TypedBackendRef) =
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when verifyIxId:
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doAssert db.txId == hdl.txId
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proc finishSession*(hdl: TypedPutHdlRef; db: TypedBackendRef) =
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when verifyIxId:
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doAssert db.txId == hdl.txId
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db.txId = 0
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# ------------------------------------------------------------------------------
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# End
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# ------------------------------------------------------------------------------
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