public String getSSPMatcherConfigRanges() {
    return Optional.ofNullable(get(SSP_MATCHER_CONFIG_RANGES))
        .orElseThrow(
          () -> new SamzaException(String.format("Missing required configuration: '%s'", SSP_MATCHER_CONFIG_RANGES)));
  }
Compile a map of each input-system to its corresponding input-monitor-regex patterns.
samza-core/src/main/java/org/apache/samza/config/JobConfig.java