### Build state

The "build state" holds the state for a build within the build definition for a single build execution, and is contained by the build tree state.

The build state is managed by the `BuildState` class.
An instance is created for each build in the build definition, once per build execution and is discarded at the end of the execution. 

        configurationCacheFails 'broken'

        then:
        failure.assertTasksExecuted()

        and:
        configurationCache.assertStateStoreFailed()
        outputContains("Configuration cache entry discarded due to serialization error.")
        failure.assertHasFailures(1)
        failure.assertHasFileName("Build file '${buildFile.absolutePath}'")
        failure.assertHasLineNumber(4)

                isFailingBuildDueToSerializationError -> log("Configuration cache entry discarded with {}.", problemCountString)
                cacheAction == STORE && discardStateDueToProblems && !hasProblems -> log("Configuration cache entry discarded${incompatibleTasksSummary()}")

			counter:   bytesSentPerSecondQuery,
			skipCheck: true,
		},
		"Net Adapter Packets Received Discarded Query": {
			counter:   packetsReceivedDiscardedQuery,
			skipCheck: true,
		},
		"Net Adapter Packets Received Errors Query": {
			counter:   packetsReceivedErrorsQuery,
			skipCheck: true,
		},
		"Net Adapter Packets Outbound Discarded Query": {
			counter:   packetsOutboundDiscardedQuery,
			skipCheck: true,
		},

                doLast { t -> t.project }
            }
        """

        when:
        configurationCacheFails ":inc:sub:broken"

        then:
        outputContains "Configuration cache entry discarded with 3 problems."
        problems.assertFailureHasProblems(failure) {
            withProblem("Build file 'inc/sub/build.gradle': line 2: registration of listener on 'Gradle.buildFinished' is unsupported".replace('/', File.separator))

		if err != nil {
			log.Warnf("wasmplugin %v/%v discarded due to json marshaling error: %s", p.Namespace, p.Name, err)
			return nil
		}
		cfg = protoconv.MessageToAny(&wrapperspb.StringValue{
			Value: cfgJSON,
		})
	}

	u, err := url.Parse(plugin.Url)
	if err != nil {
		log.Warnf("wasmplugin %v/%v discarded due to failure to parse URL: %s", p.Namespace, p.Name, err)
		return nil
	}

     */
    void startProjectExecution(boolean parallel);

    /**
     * Indicate that project execution is complete.
     *
     * <p>Note: this must be called after all projects for the build tree have been discarded.</p>
     */
    void finishProjectExecution();

        then:
        result.assertHasPostBuildOutput("Configuration cache entry reused.")

        when:
        configurationCacheFails("broken")

        then:
        outputContains("Configuration cache entry discarded with 2 problems.")
        problems.assertFailureHasProblems(failure) {
            withProblem("Build file 'build.gradle': line 3: registration of listener on 'Gradle.addListener' is unsupported")

import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**
 * Indicates that annotated component should be instantiated before session execution starts
 * and discarded after session execution completes.
 *
 * @since 4.0.0
 */
@Scope
@Documented
@Retention(RUNTIME)
@Target({TYPE, METHOD})

/**
 * Marker interface for exception handling.
 */
internal
interface ConfigurationCacheThrowable


/**
 * State might be corrupted and should be discarded.
 */
@Contextual
class ConfigurationCacheError internal constructor(
    error: String,
    cause: Throwable? = null
) : ConfigurationCacheThrowable, Exception(error, cause)


@Contextual