void processFile()

in emr-user-role-mapper-application/src/main/java/com/amazon/aws/emr/mapping/ManagedPolicyBasedUserRoleMapperImpl.java [102:135]

• 27 lines of code
• 5 McCabe index (conditional complexity)

  void processFile(String jsonString) {
    log.info("Received the following JSON {}", jsonString);
    PrincipalPolicyMappings principalPolicyMappings = GSON
        .fromJson(jsonString, PrincipalPolicyMappings.class);
    // Clear the old mapping now since we found a new valid mapping!
    principalRoleMapping.clear();
    noMatchPolicyArn = DEFAULT_NO_MATCH_POLICY_ARN;

    if (principalPolicyMappings.getNoMatchPolicyArn() != null) {
      noMatchPolicyArn = principalPolicyMappings.getNoMatchPolicyArn();
    }
    log.info("No-Match Policy ARN is : " + noMatchPolicyArn);

    for (PrincipalPolicyMapping principalPolicyMapping : principalPolicyMappings
        .getPrincipalPolicyMappings()) {
      if (!isValidMapping(principalPolicyMapping)) {
        log.info("Invalid record!");
        continue;
      }

      String principal =
          principalPolicyMapping.getUsername() != null ? principalPolicyMapping.getUsername() :
              principalPolicyMapping.getGroupname();

      List<PolicyDescriptorType> policyDescriptorTypes = new ArrayList<>();
      principalPolicyMapping.getPolicyArns().stream()
          .map(p -> new PolicyDescriptorType().withArn(p))
          .forEach(policyDescriptorTypes::add);

      principalRoleMapping.put(principal, policyDescriptorTypes);

      log.info("Mapped {} to {}", principal, principalPolicyMapping.getPolicyArns());
    }
  }