Examples with Pattern com.google.re2j.Pattern used on opensource projects

Example 1 with Pattern

use of com.google.re2j.Pattern in project hadoop by apache.

the class SaslRpcClient method getServerPrincipal.

/**
   * Get the remote server's principal.  The value will be obtained from
   * the config and cross-checked against the server's advertised principal.
   * 
   * @param authType of the SASL client
   * @return String of the server's principal
   * @throws IOException - error determining configured principal
   */
@VisibleForTesting
String getServerPrincipal(SaslAuth authType) throws IOException {
    KerberosInfo krbInfo = SecurityUtil.getKerberosInfo(protocol, conf);
    LOG.debug("Get kerberos info proto:" + protocol + " info:" + krbInfo);
    if (krbInfo == null) {
        // protocol has no support for kerberos
        return null;
    }
    String serverKey = krbInfo.serverPrincipal();
    if (serverKey == null) {
        throw new IllegalArgumentException("Can't obtain server Kerberos config key from protocol=" + protocol.getCanonicalName());
    }
    // construct server advertised principal for comparision
    String serverPrincipal = new KerberosPrincipal(authType.getProtocol() + "/" + authType.getServerId(), KerberosPrincipal.KRB_NT_SRV_HST).getName();
    // use the pattern if defined
    String serverKeyPattern = conf.get(serverKey + ".pattern");
    if (serverKeyPattern != null && !serverKeyPattern.isEmpty()) {
        Pattern pattern = GlobPattern.compile(serverKeyPattern);
        if (!pattern.matcher(serverPrincipal).matches()) {
            throw new IllegalArgumentException(String.format("Server has invalid Kerberos principal: %s," + " doesn't match the pattern: %s", serverPrincipal, serverKeyPattern));
        }
    } else {
        // check that the server advertised principal matches our conf
        String confPrincipal = SecurityUtil.getServerPrincipal(conf.get(serverKey), serverAddr.getAddress());
        if (LOG.isDebugEnabled()) {
            LOG.debug("getting serverKey: " + serverKey + " conf value: " + conf.get(serverKey) + " principal: " + confPrincipal);
        }
        if (confPrincipal == null || confPrincipal.isEmpty()) {
            throw new IllegalArgumentException("Failed to specify server's Kerberos principal name");
        }
        KerberosName name = new KerberosName(confPrincipal);
        if (name.getHostName() == null) {
            throw new IllegalArgumentException("Kerberos principal name does NOT have the expected hostname part: " + confPrincipal);
        }
        if (!serverPrincipal.equals(confPrincipal)) {
            throw new IllegalArgumentException(String.format("Server has invalid Kerberos principal: %s, expecting: %s", serverPrincipal, confPrincipal));
        }
    }
    return serverPrincipal;
}

Example 2 with Pattern

use of com.google.re2j.Pattern in project hadoop by apache.

the class AbstractPatternFilter method accepts.

@Override
public boolean accepts(MetricsTag tag) {
    // Accept if whitelisted
    Pattern ipat = includeTagPatterns.get(tag.name());
    if (ipat != null && ipat.matcher(tag.value()).matches()) {
        return true;
    }
    // Reject if blacklisted
    Pattern epat = excludeTagPatterns.get(tag.name());
    if (epat != null && epat.matcher(tag.value()).matches()) {
        return false;
    }
    // Reject if no match in whitelist only mode
    if (!includeTagPatterns.isEmpty() && excludeTagPatterns.isEmpty()) {
        return false;
    }
    return true;
}