public IotHubConnectionString()

in iothub/device/iot-device-client/src/main/java/com/microsoft/azure/sdk/iot/device/IotHubConnectionString.java [57:112]
46 lines of code
11 McCabe index (conditional complexity)

    public IotHubConnectionString(String connectionString) throws IllegalArgumentException
    {
        /* Codes_SRS_IOTHUB_CONNECTIONSTRING_21_016: [If the connection string is null or empty, the constructor shall throw an IllegalArgumentException.] */
        if ((connectionString == null) || connectionString.isEmpty())
        {
            throw new IllegalArgumentException("The connection string cannot be null or empty.");
        }

        /* Codes_SRS_IOTHUB_CONNECTIONSTRING_21_010: [The constructor shall interpret the connection string as a set of key-value pairs delimited by ';', with keys and values separated by '='.] */
        String[] connStringAttrs = connectionString.split(";");
        for (String attr : connStringAttrs)
        {
            /* Codes_SRS_IOTHUB_CONNECTIONSTRING_21_011: [The constructor shall save the IoT Hub hostName as the value of 'hostName' in the connection string.] */
            if (attr.toLowerCase().startsWith(HOSTNAME_ATTRIBUTE.toLowerCase()))
            {
                this.hostName = attr.substring(HOSTNAME_ATTRIBUTE.length());
            }
            /* Codes_SRS_IOTHUB_CONNECTIONSTRING_21_013: [The constructor shall save the device ID as the UTF-8 URL-decoded value of 'deviceId' in the connection string.] */
            else if (attr.toLowerCase().startsWith(DEVICE_ID_ATTRIBUTE.toLowerCase()))
            {
                String urlEncodedDeviceId = attr.substring(DEVICE_ID_ATTRIBUTE.length());
                try
                {
                    this.deviceId = URLDecoder.decode(urlEncodedDeviceId, CONNECTION_STRING_CHARSET.name());
                }
                catch (UnsupportedEncodingException e)
                {
                    // should never happen, since the encoding is hard-coded.
                    throw new IllegalStateException(e);
                }
            }
            /* Codes_SRS_IOTHUB_CONNECTIONSTRING_21_014: [The constructor shall save the device key as the value of 'sharedAccessKey' in the connection string.] */
            else if (attr.toLowerCase().startsWith(SHARED_ACCESS_KEY_ATTRIBUTE.toLowerCase()))
            {
                this.sharedAccessKey = attr.substring(SHARED_ACCESS_KEY_ATTRIBUTE.length());
            }
            /* Codes_SRS_IOTHUB_CONNECTIONSTRING_21_015: [The constructor shall save the shared access token as the value of 'sharedAccessToken' in the connection string.] */
            else if (attr.toLowerCase().startsWith(SHARED_ACCESS_TOKEN_ATTRIBUTE.toLowerCase()))
            {
                this.sharedAccessToken = attr.substring(SHARED_ACCESS_TOKEN_ATTRIBUTE.length());
            }
            else if (attr.toLowerCase().startsWith(MODULE_ID_ATTRIBUTE.toLowerCase()))
            {
                this.moduleId = attr.substring(MODULE_ID_ATTRIBUTE.length());
            }
            else if (attr.toLowerCase().startsWith(GATEWAY_HOST_NAME_ATTRIBUTE.toLowerCase()))
            {
                this.gatewayHostName = attr.substring(GATEWAY_HOST_NAME_ATTRIBUTE.length());
            }
        }

        this.isUsingX509 = connectionString.contains(X509_ENABLED_ATTRIBUTE);
        validateTerms(this.hostName, this.deviceId, this.sharedAccessKey, this.sharedAccessToken, this.isUsingX509);

        this.hubName = parseHubName(this.hostName);
    }