private MavenReportExecution prepareReportExecution()

in src/main/java/org/apache/maven/reporting/exec/DefaultMavenReportExecutor.java [263:352]
68 lines of code
13 McCabe index (conditional complexity)

    private MavenReportExecution prepareReportExecution(
            MavenReportExecutorRequest mavenReportExecutorRequest, GoalWithConf report, boolean hasUserDefinedReports)
            throws Exception {
        ReportPlugin reportPlugin = report.getReportPlugin();
        PluginDescriptor pluginDescriptor = report.getPluginDescriptor();

        MojoDescriptor mojoDescriptor = pluginDescriptor.getMojo(report.getGoal());
        if (mojoDescriptor == null) {
            throw new MojoNotFoundException(report.getGoal(), pluginDescriptor);
        }

        MavenProject project = mavenReportExecutorRequest.getProject();
        if (!hasUserDefinedReports && mojoDescriptor.isAggregator() && !canAggregate(project)) {
            // aggregator mojos automatically added from plugin are only run at execution root
            return null;
        }

        MojoExecution mojoExecution = new MojoExecution(
                pluginDescriptor.getPlugin(), report.getGoal(), mavenReportExecutorRequest.getExecutionId());

        mojoExecution.setMojoDescriptor(mojoDescriptor);

        mavenPluginManagerHelper.setupPluginRealm(
                pluginDescriptor,
                mavenReportExecutorRequest.getMavenSession(),
                Thread.currentThread().getContextClassLoader(),
                IMPORTS,
                EXCLUDES);

        if (!isMavenReport(mojoExecution, pluginDescriptor)) {
            if (hasUserDefinedReports) {
                // reports were explicitly written in the POM
                LOGGER.warn(
                        "Ignoring {}:{}"
                                + " goal since it is not a report: should be removed from reporting configuration in POM",
                        mojoExecution.getPlugin().getId(),
                        report.getGoal());
            }
            return null;
        }

        Xpp3Dom pluginMgmtConfiguration = null;
        if (project.getBuild() != null && project.getBuild().getPluginManagement() != null) {
            Plugin pluginMgmt =
                    find(reportPlugin, project.getBuild().getPluginManagement().getPlugins());

            if (pluginMgmt != null) {
                pluginMgmtConfiguration = (Xpp3Dom) pluginMgmt.getConfiguration();
            }
        }

        mojoExecution.setConfiguration(mergeConfiguration(
                mojoDescriptor.getMojoConfiguration(),
                pluginMgmtConfiguration,
                reportPlugin.getConfiguration(),
                report.getConfiguration(),
                mojoDescriptor.getParameterMap().keySet()));

        MavenReport mavenReport = getConfiguredMavenReport(mojoExecution, pluginDescriptor, mavenReportExecutorRequest);

        MavenReportExecution mavenReportExecution = new MavenReportExecution(
                report.getGoal(), mojoExecution.getPlugin(), mavenReport, pluginDescriptor.getClassRealm());

        lifecycleExecutor.calculateForkedExecutions(mojoExecution, mavenReportExecutorRequest.getMavenSession());

        if (!mojoExecution.getForkedExecutions().isEmpty()) {
            String reportDescription = pluginDescriptor.getArtifactId() + ":" + report.getGoal() + " report";

            String execution;
            if (StringUtils.isNotEmpty(mojoDescriptor.getExecutePhase())) {
                // forked phase
                execution = "'"
                        + (StringUtils.isEmpty(mojoDescriptor.getExecuteLifecycle())
                                ? ""
                                : ('[' + mojoDescriptor.getExecuteLifecycle() + ']'))
                        + mojoDescriptor.getExecutePhase() + "' forked phase execution";
            } else {
                // forked goal
                execution = "'" + mojoDescriptor.getExecuteGoal() + "' forked goal execution";
            }

            LOGGER.info("Preparing {} requires {}", reportDescription, execution);

            lifecycleExecutor.executeForkedExecutions(mojoExecution, mavenReportExecutorRequest.getMavenSession());

            LOGGER.info("{} for {} preparation done", execution, reportDescription);
        }

        return mavenReportExecution;
    }