Examples with ProfileBuilder org.apache.karaf.profile.ProfileBuilder used on opensource projects

Example 6 with ProfileBuilder

use of org.apache.karaf.profile.ProfileBuilder in project karaf by apache.

the class Profiles method getEffective.

/**
 * <p>Gets an <em>effective</em> profile for given <code>profile</code>. Effective profile has all property
 * placeholders resolved. When <code>finalSubstitution</code> is <code>true</code>, placeholders that can't
 * be resolved are replaced with empty strings. When it's <code>false</code>, placeholders are left unchanged.</p>
 * @param profile
 * @param resolvers
 * @param finalSubstitution
 * @return
 */
public static Profile getEffective(final Profile profile, final Collection<PlaceholderResolver> resolvers, boolean finalSubstitution) {
    assertNotNull(profile, "profile is null");
    assertNotNull(profile, "resolvers is null");
    final Map<String, TypedProperties> originals = new HashMap<>();
    final Map<String, TypedProperties> originals2 = new HashMap<>();
    for (Map.Entry<String, byte[]> entry : profile.getFileConfigurations().entrySet()) {
        if (entry.getKey().endsWith(Profile.PROPERTIES_SUFFIX)) {
            try {
                String key = entry.getKey().substring(0, entry.getKey().length() - Profile.PROPERTIES_SUFFIX.length());
                TypedProperties props = new TypedProperties(false);
                props.load(new ByteArrayInputStream(entry.getValue()));
                originals.put(key, props);
                props = new TypedProperties(false);
                props.load(new ByteArrayInputStream(entry.getValue()));
                originals2.put(key, props);
            } catch (IOException e) {
                throw new IllegalArgumentException("Can not load properties for " + entry.getKey());
            }
        }
    }
    final Map<String, Map<String, String>> dynamic = TypedProperties.prepare(originals);
    TypedProperties.substitute(originals, dynamic, (pid, key, value) -> {
        if (value != null) {
            for (PlaceholderResolver resolver : resolvers) {
                if (resolver.getScheme() == null) {
                    String val = resolver.resolve(dynamic, pid, key, value);
                    if (val != null) {
                        return val;
                    }
                }
            }
            if (value.contains(":")) {
                String scheme = value.substring(0, value.indexOf(":"));
                String toSubst = value.substring(scheme.length() + 1);
                for (PlaceholderResolver resolver : resolvers) {
                    if (scheme.equals(resolver.getScheme())) {
                        String val = resolver.resolve(dynamic, pid, key, toSubst);
                        if (val != null) {
                            return val;
                        }
                    }
                }
            }
        }
        return null;
    }, finalSubstitution);
    // Force computation while preserving layout
    ProfileBuilder builder = ProfileBuilder.Factory.createFrom(profile);
    for (String cfg : originals.keySet()) {
        TypedProperties original = originals.get(cfg);
        TypedProperties original2 = originals2.get(cfg);
        original2.putAll(original);
        builder.addFileConfiguration(cfg + Profile.PROPERTIES_SUFFIX, Utils.toBytes(original2));
    }
    // Compute the new profile
    return builder.getProfile();
}