io.dropwizard.bundles.webjars.WebJarBundle Maven / Gradle / Ivy

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Dropwizard bundle to make working with Webjars (http://webjars.org) easier.

There is a newer version: 1.3.5

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package io.dropwizard.bundles.webjars;

import com.google.common.cache.CacheBuilder;
import com.google.common.collect.Lists;
import io.dropwizard.Bundle;
import io.dropwizard.setup.Bootstrap;
import io.dropwizard.setup.Environment;
import java.util.Collections;
import java.util.List;

public class WebJarBundle implements Bundle {
  private CacheBuilder cacheBuilder = null;
  private List packages = Lists.newArrayList(WebJarServlet.DEFAULT_MAVEN_GROUPS);
  private String urlPrefix = WebJarServlet.DEFAULT_URL_PREFIX;

  public WebJarBundle() {}

  public WebJarBundle(CacheBuilder builder) {
    cacheBuilder = builder;
  }

  public WebJarBundle(String... additionalPackages) {
    Collections.addAll(packages, additionalPackages);
  }

  public WebJarBundle(CacheBuilder builder, String... additionalPackages) {
    cacheBuilder = builder;
    Collections.addAll(packages, additionalPackages);
  }

  public WebJarBundle withUrlPrefix(String prefix) {
    urlPrefix = prefix;
    return this;
  }

  private String normalizedUrlPrefix() {
    final StringBuilder pathBuilder = new StringBuilder();
    if (!urlPrefix.startsWith("/")) {
      pathBuilder.append('/');
    }
    pathBuilder.append(urlPrefix);
    if (!urlPrefix.endsWith("/")) {
      pathBuilder.append('/');
    }
    return pathBuilder.toString();
  }

  @Override
  public void initialize(Bootstrap bootstrap) {
  }

  @Override
  public void run(Environment environment) {
    String prefix = normalizedUrlPrefix();
    WebJarServlet servlet = new WebJarServlet(cacheBuilder, packages, prefix);
    environment.servlets()
        .addServlet("webjars", servlet)
        .addMapping(prefix + "*");
  }
}