cosmos-sdk/docs/architecture
yihuang 1f91ee2ee9
fix: state listener observe writes at wrong time (#13516)
* fix: state listener observe writes at wrong time

Closes: #13457

Currently state listener is notified when the cache store write, which happens in commit event only, which breaks the current design.
The solution (as discussed in the issue) is to listen state writes on rootmulti store only.

It also changes the file streamer to output single data file for the writes in the whole block, since we can't distinguish writes from different stage of abci events.

It adds new config items for file streamer:
- streamers.file.output-metadata
- streamers.file.stop-node-on-error
- streamers.file.fsync

* synchronous abci call, and format doc

* fix comment

* update file streamer readme and fix typos

* typo

* fix: state listener observe writes at wrong time

Closes: #13457

Currently state listener is notified when the cache store write, which happens in commit event only, which breaks the current design.
The solution (as discussed in the issue) is to listen state writes on rootmulti store only.

It also changes the file streamer to output single data file for the writes in the whole block, since we can't distinguish writes from different stage of abci events.

It adds new config items for file streamer:
- streamers.file.output-metadata
- streamers.file.stop-node-on-error
- streamers.file.fsync

synchronous abci call, and format doc

fix comment

update file streamer readme and fix typos

typo

* improve UX of file streamer, make it immediately usable after enabled

- set default value to write_dir.
- make write_dir based on home directory by default.
- auto-create the directory if not exists.

* get homePage from opts

Co-authored-by: Marko <marbar3778@yahoo.com>
2022-12-02 15:43:21 +01:00
..
_category_.json docs: fix tooling (#13593) 2022-10-19 12:38:36 +00:00
adr-002-docs-structure.md docs: Code blocks in SDK docs are broken (#11189) 2022-02-14 23:39:35 +01:00
adr-003-dynamic-capability-store.md docs: improve documentation navigation and redirection (#13455) 2022-10-06 15:51:10 +02:00
adr-004-split-denomination-keys.md docs: improve documentation navigation and redirection (#13455) 2022-10-06 15:51:10 +02:00
adr-006-secret-store-replacement.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-007-specialization-groups.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-008-dCERT-group.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-009-evidence-module.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-010-modular-antehandler.md docs: updates outdated docs (#12014) 2022-05-31 08:59:38 -04:00
adr-011-generalize-genesis-accounts.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-012-state-accessors.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-013-metrics.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-014-proportional-slashing.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-016-validator-consensus-key-rotation.md docs: Code blocks in SDK docs are broken (#11189) 2022-02-14 23:39:35 +01:00
adr-017-historical-header-module.md docs: improve documentation navigation and redirection (#13455) 2022-10-06 15:51:10 +02:00
adr-018-extendable-voting-period.md docs: remove typos and IBC documentation (#11933) 2022-05-12 14:02:57 +02:00
adr-019-protobuf-state-encoding.md refactor: migrate to cosmos/gogoproto (#13070) 2022-09-08 17:27:48 +00:00
adr-020-protobuf-transaction-encoding.md feat: add github links in docs (#13491) 2022-10-10 20:02:32 +02:00
adr-021-protobuf-query-encoding.md feat: add github links in docs (#13491) 2022-10-10 20:02:32 +02:00
adr-022-custom-panic-handling.md docs: updates outdated docs (#12014) 2022-05-31 08:59:38 -04:00
adr-023-protobuf-naming.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-024-coin-metadata.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-027-deterministic-protobuf-serialization.md docs: minor documentation improvements (#13594) 2022-10-19 14:56:29 +02:00
adr-028-public-key-addresses.md fix(group): migrate group policy account to base accounts with credentials (#13742) 2022-11-21 22:46:48 +00:00
adr-029-fee-grant-module.md feat: add github links in docs (#13491) 2022-10-10 20:02:32 +02:00
adr-030-authz-module.md feat: add github links in docs (#13491) 2022-10-10 20:02:32 +02:00
adr-031-msg-service.md feat: add github links in docs (#13491) 2022-10-10 20:02:32 +02:00
adr-032-typed-events.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
adr-033-protobuf-inter-module-comm.md feat: migrate to docusaurus (#13471) 2022-10-10 14:01:53 +00:00
adr-034-account-rekeying.md docs: Code blocks in SDK docs are broken (#11189) 2022-02-14 23:39:35 +01:00
adr-035-rosetta-api-support.md docs: Code blocks in SDK docs are broken (#11189) 2022-02-14 23:39:35 +01:00
adr-036-arbitrary-signature.md feat: add github links in docs (#13491) 2022-10-10 20:02:32 +02:00
adr-037-gov-split-vote.md docs: minor documentation improvements (#13594) 2022-10-19 14:56:29 +02:00
adr-038-state-listening.md fix: state listener observe writes at wrong time (#13516) 2022-12-02 15:43:21 +01:00
adr-039-epoched-staking.md docs: Code blocks in SDK docs are broken (#11189) 2022-02-14 23:39:35 +01:00
adr-040-storage-and-smt-state-commitments.md chore: Rename store/v2 -> store/v2alpha1 (#11392) 2022-03-16 18:30:27 +00:00
adr-041-in-place-store-migrations.md feat: deprecate x/params usage in x/bank (#12630) 2022-07-20 18:58:15 -04:00
adr-042-group-module.md feat: add github links in docs (#13491) 2022-10-10 20:02:32 +02:00
adr-043-nft-module.md refactor(x/nft): remove class&nft id validation (#13836) 2022-11-15 13:47:38 +01:00
adr-044-protobuf-updates-guidelines.md chore: Update wording in ADR-044 (#12683) 2022-07-23 06:41:41 +00:00
adr-045-check-delivertx-middlewares.md refactor: Revert middlewares to antehandlers (part 1/2: baseapp) (#11979) 2022-05-20 09:27:27 +00:00
adr-046-module-params.md feat: deprecate x/params usage in x/bank (#12630) 2022-07-20 18:58:15 -04:00
adr-047-extend-upgrade-plan.md chore: run markdownlint on the whole repository (#14106) 2022-11-30 19:51:26 +00:00
adr-048-consensus-fees.md docs: update sdk & tm version links in docs (#12976) 2022-08-20 08:42:13 +02:00
adr-049-state-sync-hooks.md chore: run markdownlint on the whole repository (#14106) 2022-11-30 19:51:26 +00:00
adr-050-sign-mode-textual-annex1.md feat: implement parse method for Int,Dec,Coin (#13696) 2022-12-02 14:26:25 +01:00
adr-050-sign-mode-textual-annex2.md chore: run markdownlint on the whole repository (#14106) 2022-11-30 19:51:26 +00:00
adr-050-sign-mode-textual.md chore: run markdownlint on the whole repository (#14106) 2022-11-30 19:51:26 +00:00
adr-053-go-module-refactoring.md chore: run markdownlint on the whole repository (#14106) 2022-11-30 19:51:26 +00:00
adr-055-orm.md chore: run markdownlint on the whole repository (#14106) 2022-11-30 19:51:26 +00:00
adr-057-app-wiring.md chore: run markdownlint on the whole repository (#14106) 2022-11-30 19:51:26 +00:00
adr-058-auto-generated-cli.md chore: run markdownlint on the whole repository (#14106) 2022-11-30 19:51:26 +00:00
adr-059-test-scopes.md docs: add documentation about depinject and app wiring (#13683) 2022-11-07 19:19:07 +00:00
adr-060-abci-1.0.md chore: ADR-060 Updates (#13844) 2022-11-14 07:05:56 +00:00
adr-061-liquid-staking.md chore: ADR-060 Updates (#13844) 2022-11-14 07:05:56 +00:00
adr-template.md docs: Improve markdownlint configuration (#11104) 2022-02-10 12:07:01 +00:00
PROCESS.md chore: master -> main (#11730) 2022-04-24 10:19:04 -04:00
README.md chore: ADR-060 Updates (#13844) 2022-11-14 07:05:56 +00:00

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Architecture Decision Records (ADR)

This is a location to record all high-level architecture decisions in the Cosmos-SDK.

An Architectural Decision (AD) is a software design choice that addresses a functional or non-functional requirement that is architecturally significant. An Architecturally Significant Requirement (ASR) is a requirement that has a measurable effect on a software systems architecture and quality. An Architectural Decision Record (ADR) captures a single AD, such as often done when writing personal notes or meeting minutes; the collection of ADRs created and maintained in a project constitute its decision log. All these are within the topic of Architectural Knowledge Management (AKM).

You can read more about the ADR concept in this blog post.

Rationale

ADRs are intended to be the primary mechanism for proposing new feature designs and new processes, for collecting community input on an issue, and for documenting the design decisions. An ADR should provide:

  • Context on the relevant goals and the current state
  • Proposed changes to achieve the goals
  • Summary of pros and cons
  • References
  • Changelog

Note the distinction between an ADR and a spec. The ADR provides the context, intuition, reasoning, and justification for a change in architecture, or for the architecture of something new. The spec is much more compressed and streamlined summary of everything as it stands today.

If recorded decisions turned out to be lacking, convene a discussion, record the new decisions here, and then modify the code to match.

Creating new ADR

Read about the PROCESS.

Use RFC 2119 Keywords

When writing ADRs, follow the same best practices for writing RFCs. When writing RFCs, key words are used to signify the requirements in the specification. These words are often capitalized: "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL. They are to be interpreted as described in RFC 2119.

ADR Table of Contents

Accepted

Proposed

Draft