public void populateLogReferences()

in aws-xray-recorder-sdk-core/src/main/java/com/amazonaws/xray/plugins/EC2Plugin.java [107:143]

33 lines of code
8 McCabe index (conditional complexity)


    public void populateLogReferences() {
        String filePath = null;
        String programData = System.getenv(WINDOWS_PROGRAM_DATA);

        if (StringValidator.isNullOrBlank(programData)) {
            for (Path root : fs.getRootDirectories()) {
                if (root.toString().equals(LINUX_ROOT)) {
                    filePath = LINUX_ROOT + LINUX_PATH;
                    break;
                }
            }
        } else {
            filePath = programData + WINDOWS_PATH;
        }

        if (filePath == null) {
            logger.warn("X-Ray could not recognize the file system in use. Expected file system to be Linux or Windows based.");
            return;
        }

        try {
            JsonNode logConfigs = JsonUtils.getNodeFromJsonFile(filePath, LOG_CONFIGS);
            List<String> logGroups = JsonUtils.getMatchingListFromJsonArrayNode(logConfigs, LOG_GROUP_NAME);

            for (String logGroup : logGroups) {
                AWSLogReference logReference = new AWSLogReference();
                logReference.setLogGroup(logGroup);
                logReferences.add(logReference);
            }
        } catch (IOException e) {
            logger.warn("CloudWatch Agent log configuration file not found at " + filePath + ". Install the CloudWatch Agent "
                        + "on this instance to record log references in X-Ray.");
        } catch (RuntimeException e) {
            logger.warn("An unexpected exception occurred while reading CloudWatch agent log configuration file at " + filePath
                        + ":\n", e);
        }
    }