Lightweight, fault-tolerant message streams.

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Liftbridge provides lightweight, fault-tolerant message streams by implementing a durable stream augmentation for the NATS messaging system. It extends NATS with a Kafka-like publish-subscribe log API that is highly available and horizontally scalable. The goal of Liftbridge is to provide a message-streaming solution with a focus on simplicity and usability. Use it as a simpler and lighter alternative to systems like Kafka and Pulsar or to add streaming semantics to an existing NATS deployment.

See the introduction post on Liftbridge and this post for more context and some of the inspiration behind it.

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Liftbridge
Lightweight, fault-tolerant message streams.
Liftbridge
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  • Bump json5 from 2.2.0 to 2.2.3 in /website

    Bump json5 from 2.2.0 to 2.2.3 in /website

    Bumps json5 from 2.2.0 to 2.2.3.

    Release notes

    Sourced from json5's releases.

    v2.2.3

    v2.2.2

    • Fix: Properties with the name __proto__ are added to objects and arrays. (#199) This also fixes a prototype pollution vulnerability reported by Jonathan Gregson! (#295).

    v2.2.1

    • Fix: Removed dependence on minimist to patch CVE-2021-44906. (#266)
    Changelog

    Sourced from json5's changelog.

    v2.2.3 [code, diff]

    v2.2.2 [code, diff]

    • Fix: Properties with the name __proto__ are added to objects and arrays. (#199) This also fixes a prototype pollution vulnerability reported by Jonathan Gregson! (#295).

    v2.2.1 [code, diff]

    • Fix: Removed dependence on minimist to patch CVE-2021-44906. (#266)
    Commits
    • c3a7524 2.2.3
    • 94fd06d docs: update CHANGELOG for v2.2.3
    • 3b8cebf docs(security): use GitHub security advisories
    • f0fd9e1 docs: publish a security policy
    • 6a91a05 docs(template): bug -> bug report
    • 14f8cb1 2.2.2
    • 10cc7ca docs: update CHANGELOG for v2.2.2
    • 7774c10 fix: add proto to objects and arrays
    • edde30a Readme: slight tweak to intro
    • 97286f8 Improve example in readme
    • Additional commits viewable in compare view

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  • Bump express from 4.17.1 to 4.18.2 in /website

    Bump express from 4.17.1 to 4.18.2 in /website

    Bumps express from 4.17.1 to 4.18.2.

    Release notes

    Sourced from express's releases.

    4.18.2

    4.18.1

    • Fix hanging on large stack of sync routes

    4.18.0

    ... (truncated)

    Changelog

    Sourced from express's changelog.

    4.18.2 / 2022-10-08

    4.18.1 / 2022-04-29

    • Fix hanging on large stack of sync routes

    4.18.0 / 2022-04-25

    ... (truncated)

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  • Bump qs from 6.5.2 to 6.5.3 in /website

    Bump qs from 6.5.2 to 6.5.3 in /website

    Bumps qs from 6.5.2 to 6.5.3.

    Changelog

    Sourced from qs's changelog.

    6.5.3

    • [Fix] parse: ignore __proto__ keys (#428)
    • [Fix] utils.merge`: avoid a crash with a null target and a truthy non-array source
    • [Fix] correctly parse nested arrays
    • [Fix] stringify: fix a crash with strictNullHandling and a custom filter/serializeDate (#279)
    • [Fix] utils: merge: fix crash when source is a truthy primitive & no options are provided
    • [Fix] when parseArrays is false, properly handle keys ending in []
    • [Fix] fix for an impossible situation: when the formatter is called with a non-string value
    • [Fix] utils.merge: avoid a crash with a null target and an array source
    • [Refactor] utils: reduce observable [[Get]]s
    • [Refactor] use cached Array.isArray
    • [Refactor] stringify: Avoid arr = arr.concat(...), push to the existing instance (#269)
    • [Refactor] parse: only need to reassign the var once
    • [Robustness] stringify: avoid relying on a global undefined (#427)
    • [readme] remove travis badge; add github actions/codecov badges; update URLs
    • [Docs] Clean up license text so it’s properly detected as BSD-3-Clause
    • [Docs] Clarify the need for "arrayLimit" option
    • [meta] fix README.md (#399)
    • [meta] add FUNDING.yml
    • [actions] backport actions from main
    • [Tests] always use String(x) over x.toString()
    • [Tests] remove nonexistent tape option
    • [Dev Deps] backport from main
    Commits
    • 298bfa5 v6.5.3
    • ed0f5dc [Fix] parse: ignore __proto__ keys (#428)
    • 691e739 [Robustness] stringify: avoid relying on a global undefined (#427)
    • 1072d57 [readme] remove travis badge; add github actions/codecov badges; update URLs
    • 12ac1c4 [meta] fix README.md (#399)
    • 0338716 [actions] backport actions from main
    • 5639c20 Clean up license text so it’s properly detected as BSD-3-Clause
    • 51b8a0b add FUNDING.yml
    • 45f6759 [Fix] fix for an impossible situation: when the formatter is called with a no...
    • f814a7f [Dev Deps] backport from main
    • Additional commits viewable in compare view

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  • Panic after upgrade from v1.8.0 to v1.9.0 on k8s

    Panic after upgrade from v1.8.0 to v1.9.0 on k8s

    The cluster fails to run after the upgrade. These are the states of nodes:

    • node 0 - runs successfully
    • node 1 - panics
    • node 2 - panics

    This is the log from one of the failing nodes:

    time="2022-12-05 10:03:46" level=info msg="Liftbridge Version:        v1.9.0"
    time="2022-12-05 10:03:46" level=info msg="Server ID:                 cluster-liftbridge-2"
    time="2022-12-05 10:03:46" level=info msg="Namespace:                 liftbridge-default"
    time="2022-12-05 10:03:46" level=info msg="NATS Servers:              [nats://nats_client:xxx@nats-client:4222]"
    time="2022-12-05 10:03:46" level=info msg="Default Retention Policy:  [Age: 1 week, Compact: false]"
    time="2022-12-05 10:03:46" level=info msg="Default Partition Pausing: disabled"
    time="2022-12-05 10:03:46" level=info msg="Starting Liftbridge server on 0.0.0.0:9292..."
    time="2022-12-05 10:03:46" level=debug msg="fsm: Restoring Raft state from snapshot..."
    time="2022-12-05 10:03:46" level=debug msg="Server becoming leader for partition [subject=ems.ble.omm, stream=ems.ble.omm, partition=0], epoch: 81585"
    time="2022-12-05 10:03:46" level=warning msg="Received log leader epoch assignment for an epoch < latest epoch. This implies messages have arrived out of order. New: {epoch:81585, offset:6596311}, Previous: {epoch:83904, offset:6592917} for log [subject=ems.ble.omm, stream=ems.ble.omm, partition=0]"
    panic: runtime error: invalid memory address or nil pointer dereference
    [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xe972fb]
    
    goroutine 1 [running]:
    github.com/liftbridge-io/liftbridge/server.(*partition).startReplicating(0xc000250d00, 0x13eb1, 0xc00021a120)
    	/workspace/server/partition.go:1311 +0x45b
    github.com/liftbridge-io/liftbridge/server.(*partition).becomeLeader(0xc000250d00, 0x13eb1)
    	/workspace/server/partition.go:824 +0x245
    github.com/liftbridge-io/liftbridge/server.(*partition).startLeadingOrFollowing(0xc000250d00)
    	/workspace/server/partition.go:749 +0x2de
    github.com/liftbridge-io/liftbridge/server.(*partition).SetLeader(0xc000250d00, {0xc000208318, 0x14}, 0x13eb1)
    	/workspace/server/partition.go:721 +0x133
    

    Reverting to v1.8.0 restores the cluster to a healthy state.

  • Persist ACL policies via Raft

    Persist ACL policies via Raft

    What

    • Use RaftLog to handle policy persistence on the cluster.

    • Add DeprecationWarning for file-based authorization method.

    • Add AddPolicy, RevokePolicy and ListPolicy endpoints to handle ACL policy changes.

    • In general , via AddPolicy, RevokePolicy and ListPolicy, the root client can interact with the cluster to modify ACL permissions. It can be either follower server for metadata leader. The RaftLog logic is completely abstracted from user viewpoint.

    • To simplify the design, authorization now does not allow user to change authorization model (e.g: from ACL to RBAC for example). A default ACL-with-superuser model is used.

    • Minor bug fix: In case of Subscribe endpoint, previously, authorization is enforced only when the client requested to create a subscription stream. If somehow the permission is revoked, the client can continue to listen to message from the subscription stream which remains open. The issue is fixed in the PR.

    Why

    To solve https://github.com/liftbridge-io/liftbridge/issues/409

    Depends on https://github.com/liftbridge-io/go-liftbridge/pull/122 and https://github.com/liftbridge-io/liftbridge-api/pull/57

  • Bump decode-uri-component from 0.2.0 to 0.2.2 in /website

    Bump decode-uri-component from 0.2.0 to 0.2.2 in /website

    Bumps decode-uri-component from 0.2.0 to 0.2.2.

    Release notes

    Sourced from decode-uri-component's releases.

    v0.2.2

    • Prevent overwriting previously decoded tokens 980e0bf

    https://github.com/SamVerschueren/decode-uri-component/compare/v0.2.1...v0.2.2

    v0.2.1

    • Switch to GitHub workflows 76abc93
    • Fix issue where decode throws - fixes #6 746ca5d
    • Update license (#1) 486d7e2
    • Tidelift tasks a650457
    • Meta tweaks 66e1c28

    https://github.com/SamVerschueren/decode-uri-component/compare/v0.2.0...v0.2.1

    Commits

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