public void execute()

in enforcer-rules/src/main/java/org/apache/maven/enforcer/rules/RequirePluginVersions.java [197:246]
32 lines of code
7 McCabe index (conditional complexity)

    public void execute() throws EnforcerRuleException {

        try {
            // get the various expressions out of the helper.

            lifecycles = defaultLifeCycles.getLifeCycles();

            // get all the plugins that are bound to the specified lifecycles
            Set<Plugin> allPlugins = getBoundPlugins(project, phases);

            // insert any additional plugins specified by the user.
            allPlugins = addAdditionalPlugins(allPlugins, additionalPlugins);
            allPlugins.addAll(getProfilePlugins(project));

            // pull out any we should skip
            allPlugins =
                    removeUncheckedPlugins(combineUncheckedPlugins(unCheckedPlugins, unCheckedPluginList), allPlugins);

            // there's nothing to do here
            if (allPlugins.isEmpty()) {
                getLog().info("No plugin bindings found.");
                return;
            } else {
                getLog().debug("All Plugins in use: " + allPlugins);
            }

            // get all the plugins that are mentioned in the pom (and parents)
            List<PluginWrapper> pluginWrappers = getAllPluginEntries(project);

            for (PluginWrapper pluginWrapper : pluginWrappers) {
                getLog().debug("pluginWrappers: " + pluginWrapper.getGroupId() + ":" + pluginWrapper.getArtifactId()
                        + ":" + pluginWrapper.getVersion() + " source: " + pluginWrapper.getSource());
            }
            // now look for the versions that aren't valid and add to a list.
            List<Plugin> failures = new ArrayList<>();

            for (Plugin plugin : allPlugins) {
                if (!hasValidVersionSpecified(plugin, pluginWrappers)) {
                    failures.add(plugin);
                }
            }

            // if anything was found, log it then append the optional message.
            if (!failures.isEmpty()) {
                handleMessagesToTheUser(project, failures);
            }
        } catch (PluginNotFoundException | LifecycleExecutionException e) {
            throw new EnforcerRuleException(e.getLocalizedMessage(), e);
        }
    }