Bazel Query

Tool to play with artifacts, builds and CI.

Bazel build label of file

bazel query java/Hello.java
echo "That is how it is represented in bazel world."

Bazel query a target

bazel query java:Hello
bazel query java/com/systemlogic/sample:hello 
bazel query python:Hello
bazel query python/...

Bazel query all targets

bazel query python/...
bazel query java/...
bazel query //...

Bazel query output package of targers

bazel query java/Hello.java --output package
bazel query 'java/...' --output package
bazel query //... --output package

Bazel query output label_kind of targets

bazel query //... --output label_kind

Bazel query type rules

bazel query 'kind(rule, //...)' --output label_kind

Bazel query for binaries

bazel query 'kind(.*_binary, //...)' --output label_kind

Bazel query for test cases

bazel query 'kind(.*_test, //...)' --output label_kind

Bazel query Reverse Dependency of target x in transitive closure y.

echo "bazel query 'rdeps(set(y), set(x))'"
bazel query 'rdeps(set(//java/...), set(//java:Hello.java))' 
bazel query 'rdeps(set(//...), set(//java:Hello.java))' 

Bazel query Reverse Dependency of target spreaded over multiple package <--- Affected targets

bazel query 'rdeps(set(//java/...), set(java/com/systemlogic/sample:Hello.java))'
bazel query 'rdeps(set(//java/... //python/...), set(java/com/systemlogic/sample:Hello.java))'
bazel query 'rdeps(set(//java/... //python/... //cross-language/...), set(java/com/systemlogic/sample:Hello.java))'
bazel query 'rdeps(set(//...), set(java/com/systemlogic/sample:Hello.java))'
echo "Simply removing file name targets"
bazel query 'rdeps(set(//...), set(//java/com/systemlogic/sample:Hello.java)) - set(//java/com/systemlogic/sample:Hello.java)'
bazel query 'rdeps(//..., set(//java/com/systemlogic/sample:Hello.java)) - set(//java/com/systemlogic/sample:Hello.java)'

List all affected test cases

bazel query 'kind(".*_test rule", rdeps(set(//...), set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html )))'

bazel test `bazel query 'kind(".*_test rule", rdeps(set(//...), set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html )))'`

List of affected test cases except failed ones.

bazel query 'kind(".*_test rule", rdeps(set(//...), set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html )) except set(//java/com/webapp:WebTest) )'

echo "OR simply tag the test case with skip_test or any custome string. skip_test is used in this particular case."

bazel query 'kind(".*_test rule", rdeps(set(//...), set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html )) except attr(tags, "skip_test", kind(".*_test rule", rdeps(set(//...), set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html )))) )'

Run compute intensive test case in serial mode

1. Please use exclusive tag in tags attribute provided by bazel.
2. manual keyword will exclude the target from expansion of target pattern.

List all affected library rules

bazel query 'kind(".*_library rule", rdeps(set(//...), set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html )))'

List all affected binarys

bazel query 'kind(".*_binary rule", rdeps(set(//...), set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html )))'

List of affected rules

bazel query 'kind("rule", rdeps(//..., set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html)) )' --output label_kind
echo "Please note: appengine_war_base, container_image_, and _k8s_object are not in category of binary, library, test case"

List of targets that should not be run at the time of CI, includes image creation and k8s deployment.

bazel query 'kind("_k8s_object|_k8s_object_describe|_run_all|_k8s_object_apply|_reversed", rdeps(//..., set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html))) '

echo "From main query subtract the docker and k8s targets."

bazel query 'kind("rule", rdeps(//..., set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html))) - kind("_k8s_object|_k8s_object_describe|_run_all|_k8s_object_apply|_reversed", rdeps(//..., set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html))) '


bazel query 'kind("rule", rdeps(//..., set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html))) except ( kind("_k8s_object|_k8s_object_describe|_run_all|_k8s_object_apply|_reversed", rdeps(//..., set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html))) )'

List of targets that should run as a part of CD process.

bazel query 'kind("rule", attr(tags, "cd", rdeps(//..., set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html))))'
echo "problem with above query is, tag is attached to macro not with the rule. To get rid of this problem, I have to download"
echo "k8s repository on local mark the apply rule as cd or continuous_deployment."
echo "Ref:  https://github.com/bazelbuild/rules_k8s/blob/master/k8s/objects.bzl#L102"
bazel run `bazel query 'kind("rule", attr(tags, "cd", rdeps(//..., set(//java/com/systemlogic/sample:Hello.java java/com/webapp/deployment.yaml  java/com/webapp/index.html))))'`
echo "Complete pipeline is setup without using external tool like jenkins, travis, buildkte"

Find list of changed files

git diff --name-only origin/master..origin/branchName
echo "git command will help in identifying list of files added/changed in particular PR. This can save developers time to merge the code."

Compute coverage

bazel coverage //...
bazel coverage //javatests/com/systemlogic/sample:HelloTest
genhtml -o coverage /home/fyre/.cache/bazel/_bazel_fyre/14bd4613f8913871890b0e8218348648/execroot/learn_bazel/bazel-out/k8-fastbuild/testlogs/javatests/com/systemlogic/sample/HelloTest/coverage.dat

echo "OR"
genhtml -o coverage `bazel coverage  javatests/com/systemlogic/sample:HelloTest | grep coverage.dat`

and now look into coverage folder.

There is other custom rules to do so. https://github.com/jinfwhuang/bazel-examples

Action Query

Executes a query on the post-analysis action graph.

bazel aquery 'deps(//java:Hello)'
bazel aquery 'mnemonic("JavaDeployJar", deps(//java/...))'
bazel aquery 'inputs(".*systemlogic/sample/Hello.jar" ,deps(//java/com/systemlogic/sample:Hello))'
bazel aquery 'outputs("bazel-out/k8-fastbuild/internal/_middlemen/java_Scom_Ssystemlogic_Ssample_SHello-runfiles" ,deps(//java/com/systemlogic/sample:Hello))'

where inputs, outputs and mnemonic are filter function.

Configurable Query

Executes a post-analysis dependency graph query.

Buildifier, Buildozer and Unused Deps

To format and remove the unused loads

buildozer 'fix unusedLoads' //...:*

or to simply fix the formatting.

buildifier --mode=fix BUILD

Unused Deps is a command line tool to determine any unused dependencies in java_library rules. Please add one dependency and run the unused command.

unused_deps <JAVA TARGET NAME>