Bazel Concepts

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Revision as of 21:03, 20 September 2024 by Ovidiu (talk | contribs) (→‎Package)
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Internal

Repository

https://bazel.build/concepts/build-ref#repositories

repositories.bzl

Package

https://bazel.build/concepts/build-ref#packages

A package is the primary unit of code organization in a repository. A package is a collection of related files, and a specification, embodied by the BUILD file, of how these files can be used to produce artifacts. All files that are part of a package live in the same directory, which is the directory that contains the BUILD file.

Target

https://bazel.build/concepts/build-ref#targets

Label

https://bazel.build/concepts/labels

BUILD files

Bazel BUILD Files

Dependencies

https://bazel.build/concepts/dependencies

Build Dependency Graph

Also see:

bazel query

Visibility

https://bazel.build/concepts/visibility

Platforms

https://bazel.build/concepts/platforms

Rules

Hermeticity

https://bazel.build/basics/hermeticity

Directories

Workspace

https://bazel.build/concepts/build-ref#workspace

A project's workspace is the directory where bazel looks for build inputs and BUILD files, and where it stores build outputs. The actual location is obtained with bazel info.

Bin

The actual location is obtained with bazel info.

Genfiles

The actual location is obtained with bazel info.

Testlogs

The actual location is obtained with bazel info.

Execution Root

The actual location is obtained with bazel info.

Install Base

The actual location is obtained with bazel info.

Output Base

The actual location is obtained with bazel info.

Output Path

The actual location is obtained with bazel info.

Package Path

%workspace%. See Workspace.

Repository Cache

The actual location is obtained with bazel info.

Files

Server Log

The actual location is obtained with bazel info.

Command Log

The actual location is obtained with bazel info.

.bazelrc

.bazelrc

Project View File

Seems to be this one:

directories:
 # Add the directories you want added as source here
 # By default, we've added your entire workspace ('.')
 .

# Automatically includes all relevant targets under the 'directories' above
derive_targets_from_directories: true

targets:
  # If source code isn't resolving, add additional targets that compile it here

additional_languages:
 # Uncomment any additional languages you want supported
 # android
 # dart
 # go
 # javascript
 # kotlin
 # python
 # scala
 # typescript

# Uncomment to run this target before every sync
# gazelle_target: //:gazelle

BUILD File

Bazel BUILD Files

Starlark

Starlark

Bazelisk

A bazel runner. as "Bazel binary location" in the Bazel IntelliJ Plugin.

Bazel and IntelliJ

Sync Process

The sync process queries Bazel for information and builds IntelliJ project structure to fid Bazel's model. It runs automatically during a project import, and manually by clicking on the sync icon in the menu bar, or partially syncing packages and individual files in contextual menus.

If the file is not reachable from Bazel targets, it will show up as unsynced in the IDE.

TODO: https://blog.bazel.build/2019/09/29/intellij-bazel-sync.html

rules_go

https://github.com/bazelbuild/rules_go/

Reconcile with Bazel_BUILD_Files#Build_Rules.

nogo

https://github.com/bazelbuild/rules_go/blob/master/go/nogo.rst#

nogo is a tool that analyzes source code of Go programs. It runs alongside the Go compiler in the Bazel Go rules and rejects programs that contain disallowing coding patterns. In addition, nogo may report compiler-like errors. It may be used to run the same analyses as vet. The nogo rule will generate a program that executes all the supplied analyzers at build-time. The generated nogo program will run alongside the compiler when building any Go target (e.g. go_library) within your workspace, even if the target is imported from an external repository. However, nogo will not run when targets from the current repository are imported into other workspaces and built there.

Analyzers

https://github.com/bazelbuild/rules_go/blob/master/go/nogo.rst#configuring-analyzers

nogo Setup

To activate nogo, declare a nogo target in the BUILD file.

load("@io_bazel_rules_go//go:def.bzl", "nogo")

nogo(
    name = "my_nogo",
    deps = [
        # analyzer from the local repository
        ":importunsafe",
        # analyzer from a remote repository
        "@org_golang_x_tools//go/analysis/passes/printf:go_default_library",
    ],
    visibility = ["//visibility:public"], # must have public visibility
)
go_library(
    name = "importunsafe",
    srcs = ["importunsafe.go"],
    importpath = "importunsafe",
    deps = ["@org_golang_x_tools//go/analysis:go_default_library"],
    visibility = ["//visibility:public"],
)

nogo Configuration

https://github.com/bazelbuild/rules_go/blob/master/go/nogo.rst#configuring-analyzers

nogo is configured with a JSON file that specifies analyzers:

{
  "structtag": {
    "exclude_files": {
      "vendor/": "vendor tools don't pass vet",
      "external/": "external tools don't pass vet"
    }
  },
  "exhaustive": {
    "exclude_files": {
      "vendor/": "vendor tools don't pass vet",
      "external/": "external tools don't pass vet"
    }
  },
  ...
}

To exclude completely all files:

  "exhaustive": {
    "exclude_files": {
      ".*": "disable completely"
    }
  },

gazelle

Updates Bazel configuration files.

Example:

bazel run //:gazelle -- update-repos golang.org/x/sys@v0.13.0

adds the following line to the WORKSPACE file:

go_repository(
    name = "org_golang_x_sys",
    importpath = "golang.org/x/sys",
    sum = "h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=",
    version = "v0.13.0",
)

vet

https://golang.org/cmd/vet/

Also see nogo.