import com.hazelcast.util.StringUtil; //导入依赖的package包/类
private void reviewConfiguration(AwsConfig config) {
    if (StringUtil.isNullOrEmptyAfterTrim(config.getSecretKey())
            || StringUtil.isNullOrEmptyAfterTrim(config.getAccessKey())) {

        if (!StringUtil.isNullOrEmptyAfterTrim(config.getIamRole())) {
            getLogger().info("Describe instances will be queried with iam-role, "
                    + "please make sure given iam-role have ec2:DescribeInstances policy attached.");
        } else {
            getLogger().warning("Describe instances will be queried with iam-role assigned to EC2 instance, "
                    + "please make sure given iam-role have ec2:DescribeInstances policy attached.");
        }
    } else {
        if (!StringUtil.isNullOrEmptyAfterTrim(config.getIamRole())) {
            getLogger().info("No need to define iam-role, when access and secret keys are configured!");
        }
    }
}
 

import com.hazelcast.util.StringUtil; //导入依赖的package包/类
@Override
public Dataset intercept(Serializable key, RestValue _new,
    RestValue _old) throws ChannelException {
  if (log.isDebugEnabled()) {
    log.debug("-- Begin message --");
    log.debug(StringUtil.bytesToString(_new.getValue()));
    log.debug("-- End message --");
  }
  try 
  {
    JsonRequest jr = gsonWrapper.get().fromJson(StringUtil.bytesToString(_new.getValue()), JsonRequest.class);
    jr.setClassVars(classVars.split(","));
    return mapper.mapStringToModel(jr);
  } catch (Exception e) {
    throw new ChannelException("Inbound interceptor ["+name()+"] ", e);
  }
}
 

import com.hazelcast.util.StringUtil; //导入依赖的package包/类
@Override
public void configure(final Properties props) {
    String instanceName = CacheEnvironment.getInstanceName(props);

    if (!StringUtil.isNullOrEmptyAfterTrim(instanceName)) {
        LOGGER.info("Using existing HazelcastInstance [" + instanceName + "].");
        this.existingInstanceName = instanceName;
    } else {
        String configResourcePath = CacheEnvironment.getConfigFilePath(props);
        if (!StringUtil.isNullOrEmptyAfterTrim(configResourcePath)) {
            try {
                this.config = ConfigLoader.load(configResourcePath);
            } catch (IOException e) {
                LOGGER.warning("IOException: " + e.getMessage());
            }
            if (config == null) {
                throw new CacheException("Could not find configuration file: " + configResourcePath);
            }
        } else {
            this.config = new XmlConfigBuilder().build();
        }
    }

    this.shutDown = CacheEnvironment.shutdownOnStop(props, (instanceName == null));
}
 

import com.hazelcast.util.StringUtil; //导入依赖的package包/类
@Override
public void configure(Properties props) {
    String instanceName = CacheEnvironment.getInstanceName(props);

    if (!StringUtil.isNullOrEmptyAfterTrim(instanceName)) {
        LOGGER.info("Using existing HazelcastInstance [" + instanceName + "].");
        this.existingInstanceName = instanceName;
    } else {
        String configResourcePath = CacheEnvironment.getConfigFilePath(props);
        if (!StringUtil.isNullOrEmptyAfterTrim(configResourcePath)) {
            try {
                this.config = ConfigLoader.load(configResourcePath);
            } catch (IOException e) {
                LOGGER.warning("IOException: " + e.getMessage());
            }
            if (config == null) {
                throw new CacheException("Could not find configuration file: " + configResourcePath);
            }
        } else {
            this.config = new XmlConfigBuilder().build();
        }
    }

    this.shutDown = CacheEnvironment.shutdownOnStop(props, (instanceName == null));
}
 

import com.hazelcast.util.StringUtil; //导入依赖的package包/类
private Comparable readProperty(String prefix, PropertyDefinition property) {
    if (prefix != null) {
        String p = getProperty(prefix, property);
        String v = System.getProperty(p);
        if (StringUtil.isNullOrEmpty(v)) {
            v = System.getenv(p);
            if (StringUtil.isNullOrEmpty(v)) {
                v = System.getenv(cIdentifierLike(p));
            }
        }

        if (!StringUtil.isNullOrEmpty(v)) {
            return property.typeConverter().convert(v);
        }
    }
    return null;
}
 

import com.hazelcast.util.StringUtil; //导入依赖的package包/类
private static boolean getBoolean(FilterConfig filterConfig, Properties properties, String paramName, boolean defaultValue) {
    String value = getValue(filterConfig, properties, paramName);
    if (StringUtil.isNullOrEmptyAfterTrim(value)) {
        return defaultValue;
    } else {
        return Boolean.valueOf(value);
    }
}
 

import com.hazelcast.util.StringUtil; //导入依赖的package包/类
private static int getInt(FilterConfig filterConfig, Properties properties, String paramName, int defaultValue) {
    String value = getValue(filterConfig, properties, paramName);
    if (StringUtil.isNullOrEmptyAfterTrim(value)) {
        return defaultValue;
    } else {
        try {
            return Integer.parseInt(value);
        } catch (NumberFormatException e) {
            throw new InvalidConfigurationException(paramName + " needs to be an integer: (" + value + ")");
        }
    }
}
 

import com.hazelcast.util.StringUtil; //导入依赖的package包/类
private static String getString(FilterConfig filterConfig, Properties properties, String paramName, String defaultValue) {
    String value = getValue(filterConfig, properties, paramName);
    if (StringUtil.isNullOrEmptyAfterTrim(value)) {
        return defaultValue;
    } else {
        return value;
    }
}
 

import com.hazelcast.util.StringUtil; //导入依赖的package包/类
private static Set<String> getStringSet(FilterConfig filterConfig, Properties properties, String paramName) {
    String value = getValue(filterConfig, properties, paramName);
    if (StringUtil.isNullOrEmptyAfterTrim(value)) {
        return Collections.emptySet();
    } else {
        HashSet<String> transientAttributes = new HashSet<String>();
        StringTokenizer st = new StringTokenizer(value, ",");
        while (st.hasMoreTokens()) {
            String token = st.nextToken();
            transientAttributes.add(token.trim());
        }
        return transientAttributes;
    }
}
 

import com.hazelcast.util.StringUtil; //导入依赖的package包/类
private KubernetesClient buildKubernetesClient(String token, String kubernetesMaster) {
    if (StringUtil.isNullOrEmpty(token)) {
        token = getAccountToken();
    }
    logger.info("Kubernetes Discovery: Bearer Token { " + token + " }");
    Config config = new ConfigBuilder().withOauthToken(token).withMasterUrl(kubernetesMaster).build();
    return new DefaultKubernetesClient(config);
}