nfisher/mvn2bzl

Convert maven multi-module projects to Bazel.

mvn2bzl's Issues

Walk workspace directory sub-tree

Given a workspace path
When navigation is initiated
Then all valid paths should be traversed
And they should be emitted.

Tasks

• walk directory.
• ignore list of prefixes.
• emit file names onto queue.

Ignore

• bazel-* in pom search.
• dot file paths.
• target directories.

Infer package node from path

Given a java file exists in a sub-module 
When it's filename is emitted from the walker
Then it should add a unique package node to the workspace graph based on its path.

Tasks

• subscribe to directory walker queue for *.java files.
• infer the package based on maven standard directory structure.
• add package node with required fields to the workspace graph.

Add all Files to workspace graph

Given a file exists
When it is emitted
Then it should be stored in the workspace graph.

• subscribe to directory walker queue for all files.
• add file node into file trie for indexed look-up.
• add file node with required fields to the workspace graph.

Required Fields

• path.
• mimetype.

WORKSPACE and BUILD templates

Given a target workspace
When the BUILD and WORKSPACE files are generated
Then they should be rendered from a resource template.

Tasks

• repositories.bzl template and view model.
• WORKSPACE template and view model.
• BUILD template and view model.

Create module nodes

Given the `metrics/pom.xml`:
  | groupId    | com.instana    |
  | artifactId | metrics        |
  | version    | 1.0.0-SNAPSHOT |  
When it is processed
Then a module node should be added to the workspace graph.

Tasks

• subscribe to directory walker queue for pom.xml files.
• read pom.xml files using the model reader.
• add module node with required fields to the workspace graph.

Required Fields

• path - path to the related pom.xml file..
• groupId - maven group ID for this module.
• artifactId - maven artifact ID for this module.
• version - maven version for this module.

Create class and package nodes from source

Given a java file exists in a sub-module 
When it's filename is emitted from the walker
Then it should add a unique package node to the workspace graph
And it should add the parsed class nodes.

Tasks

• subscribe to directory walker queue for *.java files.
• parse source and extract relevant class and package names.
• add package node with required fields to the workspace graph.

References

• https://javaparser.org/

Resolve dependencies for module

Given a module's maven coordinate
When I resolve its dependencies
Then I should receive a list of all direct and transitive dependencies for the module.