public void execute()

in src/main/java/org/apache/maven/plugins/dependency/GetMojo.java [122:187]
56 lines of code
13 McCabe index (conditional complexity)

    public void execute() throws MojoExecutionException, MojoFailureException {
        if (isSkip()) {
            getLog().info("Skipping plugin execution");
            return;
        }

        if (coordinate.getArtifactId() == null && artifact == null) {
            throw new MojoFailureException("You must specify an artifact, "
                    + "e.g. -Dartifact=org.apache.maven.plugins:maven-downloader-plugin:1.0");
        }
        if (artifact != null) {
            String[] tokens = StringUtils.split(artifact, ":");
            if (tokens.length < 3 || tokens.length > 5) {
                throw new MojoFailureException("Invalid artifact, you must specify "
                        + "groupId:artifactId:version[:packaging[:classifier]] " + artifact);
            }
            coordinate.setGroupId(tokens[0]);
            coordinate.setArtifactId(tokens[1]);
            coordinate.setVersion(tokens[2]);
            if (tokens.length >= 4) {
                coordinate.setType(tokens[3]);
            }
            if (tokens.length == 5) {
                coordinate.setClassifier(tokens[4]);
            }
        }

        ArtifactRepositoryPolicy always = new ArtifactRepositoryPolicy(
                true, ArtifactRepositoryPolicy.UPDATE_POLICY_ALWAYS, ArtifactRepositoryPolicy.CHECKSUM_POLICY_WARN);

        List<ArtifactRepository> repoList = new ArrayList<>();

        if (pomRemoteRepositories != null) {
            repoList.addAll(pomRemoteRepositories);
        }

        if (remoteRepositories != null) {
            // Use the same format as in the deploy plugin id::layout::url
            String[] repos = StringUtils.split(remoteRepositories, ",");
            for (String repo : repos) {
                repoList.add(parseRepository(repo, always));
            }
        }

        try {
            ProjectBuildingRequest buildingRequest =
                    new DefaultProjectBuildingRequest(session.getProjectBuildingRequest());

            Settings settings = session.getSettings();
            repositorySystem.injectMirror(repoList, settings.getMirrors());
            repositorySystem.injectProxy(repoList, settings.getProxies());
            repositorySystem.injectAuthentication(repoList, settings.getServers());

            buildingRequest.setRemoteRepositories(repoList);

            if (transitive) {
                getLog().info("Resolving " + coordinate + " with transitive dependencies");
                dependencyResolver.resolveDependencies(buildingRequest, coordinate, null);
            } else {
                getLog().info("Resolving " + coordinate);
                artifactResolver.resolveArtifact(buildingRequest, toArtifactCoordinate(coordinate));
            }
        } catch (ArtifactResolverException | DependencyResolverException e) {
            throw new MojoExecutionException("Couldn't download artifact: " + e.getMessage(), e);
        }
    }