protected void checkoutExisting()

in src/main/java/org/apache/maven/plugins/scmpublish/AbstractScmPublishMojo.java [373:442]
55 lines of code
16 McCabe index (conditional complexity)

    protected void checkoutExisting() throws MojoExecutionException {

        if (scmProvider instanceof AbstractSvnScmProvider) {
            checkCreateRemoteSvnPath();
        }

        logInfo(
                MessageUtils.buffer().strong("%s") + " the pub tree from "
                        + MessageUtils.buffer().strong("%s") + " into %s",
                (tryUpdate ? "Updating" : "Checking out"),
                pubScmUrl,
                checkoutDirectory);

        if (checkoutDirectory.exists() && !tryUpdate) {

            try {
                FileUtils.deleteDirectory(checkoutDirectory);
            } catch (IOException e) {
                logError(e.getMessage());

                throw new MojoExecutionException("Unable to remove old checkout directory: " + e.getMessage(), e);
            }
        }

        boolean forceCheckout = false;

        if (!checkoutDirectory.exists()) {

            if (tryUpdate) {
                logInfo("TryUpdate is configured but no local copy currently available: forcing checkout.");
            }
            checkoutDirectory.mkdirs();
            forceCheckout = true;
        }

        try {
            ScmFileSet fileSet = new ScmFileSet(checkoutDirectory, includes, excludes);

            ScmBranch branch = (scmBranch == null) ? null : new ScmBranch(scmBranch);

            ScmResult scmResult = null;
            if (tryUpdate && !forceCheckout) {
                scmResult = scmProvider.update(scmRepository, fileSet, branch);
            } else {
                int attempt = 0;
                while (scmResult == null) {
                    try {
                        scmResult = scmProvider.checkOut(scmRepository, fileSet, branch);
                    } catch (ScmException e) {
                        // give it max 2 times to retry
                        if (attempt++ < 2) {
                            try {
                                // wait 3 seconds
                                Thread.sleep(3 * 1000);
                            } catch (InterruptedException ie) {
                                // noop
                            }
                        } else {
                            throw e;
                        }
                    }
                }
            }
            checkScmResult(scmResult, "check out from SCM");
        } catch (ScmException | IOException e) {
            logError(e.getMessage());

            throw new MojoExecutionException("An error occurred during the checkout process: " + e.getMessage(), e);
        }
    }