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Let Starlark rules specify their environment via RunEnvironmentInfo
The new RunEnvironmentInfo provider allows any executable or test Starlark rule to specify the environment for when it is executed, either as part of a test action or via the run command. Refactors testing.TestEnvironment to construct a RunEnvironmentInfo and adds a warning (but not an error) if the provider constructed in this way is returned from a non-executable non-test rule. If a RunEnvironmentInfo is constructed directly via the Starlark constructor, this warning becomes an error.
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94 changes: 94 additions & 0 deletions
94
src/main/java/com/google/devtools/build/lib/analysis/RunEnvironmentInfo.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,94 @@ | ||
| package com.google.devtools.build.lib.analysis; | ||
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| import com.google.common.base.Preconditions; | ||
| import com.google.common.collect.ImmutableList; | ||
| import com.google.common.collect.ImmutableMap; | ||
| import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable; | ||
| import com.google.devtools.build.lib.packages.BuiltinProvider; | ||
| import com.google.devtools.build.lib.packages.NativeInfo; | ||
| import com.google.devtools.build.lib.starlarkbuildapi.RunEnvironmentInfoApi; | ||
| import com.google.devtools.build.lib.starlarkbuildapi.test.TestEnvironmentInfoApi; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import net.starlark.java.eval.Dict; | ||
| import net.starlark.java.eval.EvalException; | ||
| import net.starlark.java.eval.Sequence; | ||
| import net.starlark.java.eval.StarlarkList; | ||
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| @Immutable | ||
| public final class RunEnvironmentInfo extends NativeInfo implements RunEnvironmentInfoApi, | ||
| TestEnvironmentInfoApi { | ||
|
|
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| /** | ||
| * Singleton instance of the provider type for {@link DefaultInfo}. | ||
| */ | ||
| public static final RunEnvironmentInfoProvider PROVIDER = new RunEnvironmentInfoProvider(); | ||
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| private final ImmutableMap<String, String> environment; | ||
| private final ImmutableList<String> inheritedEnvironment; | ||
| private final boolean shouldErrorOnNonExecutableRule; | ||
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|
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| /** | ||
| * Constructs a new provider with the given fixed and inherited environment variables. | ||
| */ | ||
| public RunEnvironmentInfo(Map<String, String> environment, List<String> inheritedEnvironment, | ||
| boolean shouldErrorOnNonExecutableRule) { | ||
| this.environment = ImmutableMap.copyOf(Preconditions.checkNotNull(environment)); | ||
| this.inheritedEnvironment = | ||
| ImmutableList.copyOf(Preconditions.checkNotNull(inheritedEnvironment)); | ||
| this.shouldErrorOnNonExecutableRule = shouldErrorOnNonExecutableRule; | ||
| } | ||
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| @Override | ||
| public RunEnvironmentInfoProvider getProvider() { | ||
| return PROVIDER; | ||
| } | ||
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| /** | ||
| * Returns environment variables which should be set when the target advertising this provider is | ||
| * executed. | ||
| */ | ||
| @Override | ||
| public Map<String, String> getEnvironment() { | ||
| return environment; | ||
| } | ||
|
|
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| /** | ||
| * Returns names of environment variables whose value should be inherited from the shell | ||
| * environment when the target advertising this provider is executed. | ||
| */ | ||
| @Override | ||
| public ImmutableList<String> getInheritedEnvironment() { | ||
| return inheritedEnvironment; | ||
| } | ||
|
|
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| /** | ||
| * Returns whether advertising this provider on a non-executable (and thus non-test) rule should | ||
| * result in an error or a warning. The latter is required to not break testing.TestEnvironment, | ||
| * which is now implemented via RunEnvironmentInfo. | ||
| */ | ||
| public boolean shouldErrorOnNonExecutableRule() { | ||
| return shouldErrorOnNonExecutableRule; | ||
| } | ||
|
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| /** | ||
| * Provider implementation for {@link RunEnvironmentInfoApi}. | ||
| */ | ||
| public static class RunEnvironmentInfoProvider extends BuiltinProvider<RunEnvironmentInfo> | ||
| implements RunEnvironmentInfoApi.RunEnvironmentInfoApiProvider { | ||
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| private RunEnvironmentInfoProvider() { | ||
| super("RunEnvironmentInfo", RunEnvironmentInfo.class); | ||
| } | ||
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| @Override | ||
| public RunEnvironmentInfoApi constructor(Dict<?, ?> environment, | ||
| Sequence<?> inheritedEnvironment) throws EvalException { | ||
| return new RunEnvironmentInfo( | ||
| Dict.cast(environment, String.class, String.class, "environment"), | ||
| StarlarkList.immutableCopyOf( | ||
| Sequence.cast(inheritedEnvironment, String.class, "inherited_environment")), | ||
| true); | ||
| } | ||
| } | ||
| } |
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63 changes: 0 additions & 63 deletions
63
src/main/java/com/google/devtools/build/lib/analysis/test/TestEnvironmentInfo.java
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