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· 4 min read

KCL is a constraint-based record and functional language hosted by Cloud Native Computing Foundation (CNCF) that enhances the writing of complex configurations and polices, including those for cloud-native scenarios. With its advanced programming language technology and practices, KCL is dedicated to promoting better modularity, scalability, and stability for configurations. It enables simpler logic writing and offers ease of automation APIs and integration with homegrown systems.

This section will update the KCL language community's latest news, including features, website updates, and the latest community news, helping everyone better understand the KCL community!

KCL Website: https://kcl-lang.io

Overview​

Thanks to to all contributors for their outstanding work over the past twenty days (2024.04.04 - 2024.04.17). Here is an overview of the key content.

🏄 Language Update

  • KCL has added support for the Alpine Linux and Fedora Linux platforms.
  • Support for the evaluation of lambda closures.
  • Fixed a bug of the union of schema instances failed within list comprehensions.
  • Fixed the calling process error of lambda methods within schemas.
  • Fixed a bug that APIs could not be found on the Windows system.
  • Fixed a parallel compilation error caused by lock file failures.

⛵️ API Update

  • OverrideFile API supports insertion of non-exist variables.

  • Override API supports taking the variable name as one assignment value.

  • Override API fixes configuration merge failure due to whitespace.

🚪 CLI Update

  • Optimized the format of the output json.

🔥 SDK Update

💻 IDE Update

  • KCL VScode supports the highlight of kcl.mod and kcl.mod.lock.

kclmod kclmodlock

📬️ KCL Package Management Tool Update

  • downloader is added for api to support custom three-party dependencies download process.

  • Fixed an issue where the repository specified in the url was invalid when adding dependencies using the oci url.

  • Fixed an issue where calling api output logs failed

📦️ KCL Modules Update

  • Provide Argo-cd-order which is a module for ordering argocd sync operations.

  • Provide crossplane-provider-gcp-upjet which is spec definition for crossplane-provider-upjet-gcp.

  • crossplane is updated to version 1.15.2.

📘 Doc Update

  • Added SDK related documents.

  • Added rust api documentation.

  • Added node-js api documentation.

  • Updated the OverrideFile API spec specification.

  • Added KCL Nix installation document.

  • Add package management tool supports Registry list.

  • Added more Q&A.

🎈 Community

  • Viktor Farcic, a well-known KOL, YouTuber, and DevOpsToolkit channel manager, reviewed KCL and introduced KCL as a solution for how to better manage Kubernetes configuration lists and handle data structures.

youtuber

The video link: https://www.youtube.com/watch?v=Gn6btuH3ULw

Special Thanks​

We'd like to thank all the community participants from the past two weeks.

The following are listed in no particular order:

  • Thanks to @bozaro for the contribution to the KCL Go SDK 🙌
  • Thanks to @jheyduk for the contribution to the Kubectl KCL plugin 🙌
  • Thanks to @shruti2522，@metacoma contribution to the KCL 🙌
  • Thanks to @metacoma，@aleeriz contribution to the KCL modules 🙌
  • Thanks to @XiaoK29 contribution to the KCL go SDK 🙌
  • Thanks to @d4v1d03 contribution to the KCL Website Docs 🙌
  • Thanks to @shruti2522 contribution to the KCL IDE 🙌
  • Thanks to @Tom van Dinther contributions to Nix support for KCL Cli 🙌
  • Thanks to @steeling, @Stephen C, @Henri Williams, @Hai Wu, @Even Solberg, @Sergey Ryabin, @Shashank Mittal @Abhishek and others for their valuable suggestions and feedback while using KCL recently 🙌

Resources​

❤️ See here to join us!

For more resources, please refer to

· 4 min read

KCL is a constraint-based record and functional language hosted by Cloud Native Computing Foundation (CNCF) that enhances the writing of complex configurations and polices, including those for cloud-native scenarios. With its advanced programming language technology and practices, KCL is dedicated to promoting better modularity, scalability, and stability for configurations. It enables simpler logic writing and offers ease of automation APIs and integration with homegrown systems.

This section will update the KCL language community's latest news, including features, website updates, and the latest community news, helping everyone better understand the KCL community!

KCL Website: https://kcl-lang.io

Overview​

Thanks to to all contributors for their outstanding work over the past twenty days (2024.04.04 - 2024.04.17). Here is an overview of the key content.

🏄 Language Updates

  • The instances() method of Schema has added a new keyword parameter full_pkg for reading all instances corresponding to the Schema in the code.
schema Person:
    name: str

alice = Person {name = "Alice"}
all_persons = Person.instances(True)
  • Added the template system module for manipulation of templates in KCL.
import template

content = template.execute("""\
<div class="entry">
{{#if author}}
<h1>{{firstName}} {{lastName}}</h1>
{{/if}}
</div>
""", {
  author: True,
  firstName: "Yehuda",
  lastName: "Katz",
})

⛵️ Toolchain Updates

  • The OverrideFile API supports modifying/deleting non-schema type fields.
  • New ListVariable API for reading the values of variables in KCL files.

🔥 SDK Updates

  • The KCL Go SDK has been released in version 0.8.4.
  • The KCL Rust SDK has added the llvm feature, allowing to choose whether to use the LLVM, defaulting to off. When the LLVM feature is turned off, binary size can be reduced by 90%. Dependencies can be added in the following way:
cargo add --git https://github.com/kcl-lang/lib
  • __test__/test_data/schema.k
schema AppConfig:
    replicas: int

app: AppConfig {
    replicas: 2
}
  • execProgram
import { execProgram, ExecProgramArgs } from "kcl-lib";

function main() {
  const result = execProgram(
    new ExecProgramArgs(["__test__/test_data/schema.k"]),
  );
  console.log(result.yamlResult); // 'app:\n  replicas: 2'
}

main();
  • listVariables
import { listVariables, ListVariablesArgs } from "kcl-lib";

function main() {
  const result = listVariables(
    ListVariablesArgs("__test__/test_data/schema.k", []),
  );
  console.log(result.variables["app"].value); // 'AppConfig {replicas: 2}'
}

main();
  • loadPackage
import { loadPackage, LoadPackageArgs } from "kcl-lib";

function main() {
  const result = loadPackage(
    LoadPackageArgs(["__test__/test_data/schema.k"], [], true),
  );
  console.log(result.symbols);
}

main();

💻 IDE Updates

  • Added compilation unit caching to enhance IDE performance.

🌼 Integration Updates

  • Crossplane KCL Function supports reading Function Context parameters for passing parameters to different functions.
    • Support reading the function context across different functions.
    • Support reading the function details to set sensitive information.
    • Support setting the status field of XR to output user information.
    • Fixed errors related to concurrent requests when issuing clusters under multiple XR resources.
  • KCL has released a Nix package, allowing installation of the KCL command line tools with nix-shell or devbox shell.

Special Thanks​

We'd like to thank all the community participants from the past two weeks.

The following are listed in no particular order:

  • Thanks to @bozaro for the contribution to the KCL Go SDK 🙌
  • Thanks to @jheyduk for the contribution to the Kubectl KCL plugin 🙌
  • Thanks to @shashank-iitbhu for the contribution to the quick fix feature for KCL IDE syntax 🙌
  • Thanks to @d4v1d03 for the contribution to the KCL official website FAQ documentation 🙌
  • Thanks to @octonawish-akcodes for the contribution to the automatic dependency update feature for KCL IDE based on kcl.mod 🙌
  • Thanks to @utnim2 for the contribution to the restart kcl-language-server command for KCL IDE 🙌
  • Thanks to @AkashKumar7902 for the contribution to the KCL package management tool MVS algorithm 🙌
  • Thanks to @steeling, @bozaro, @vtomilov, @sanzoghenzo, @folliehiyuki, @markphillips100, @wilsonwang371, @zargor, @aleeriz, @reckless-huang, @zhuxw, @jheyduk, @Vitaly Tomilov, @Sergey Ryabin, @Stephen C, @ytsarev and others for their valuable suggestions and feedback while using KCL recently. 🙌

Resources​

❤️ See here to join us!

For more resources, please refer to