public static AzureADToken getTokenFromMsi()

in src/main/java/com/microsoft/azure/datalake/store/oauth2/AzureADAuthenticator.java [98:126]

• 21 lines of code
• 6 McCabe index (conditional complexity)

    public static AzureADToken getTokenFromMsi(String tenantGuid, String clientId, boolean bypassCache) throws IOException {
        String authEndpoint  = "http://169.254.169.254/metadata/identity/oauth2/token";

        QueryParams qp = new QueryParams();
        qp.add("api-version", "2018-02-01");
        qp.add("resource", resource);


        if (tenantGuid != null && tenantGuid.length() > 0) {
            String authority = "https://login.microsoftonline.com/" + tenantGuid;
            qp.add("authority", authority);
        }

        if (clientId != null && clientId.length() > 0) {
            qp.add("client_id", clientId);
        }

        if (bypassCache) {
            qp.add("bypass_cache", "true");
        }

        Hashtable<String, String> headers = new Hashtable<String, String>();
        headers.put("Metadata", "true");

        RetryPolicy retryPolicy = new ExponentialBackoffPolicyforMSI(3, 1000, 2);

        log.debug("AADToken: starting to fetch token using MSI");
        return getTokenCall(authEndpoint, qp.serialize(), headers, "GET", retryPolicy);
    }