public InputStream call()

in archaius2-persisted2/src/main/java/com/netflix/archaius/persisted2/loader/HTTPStreamLoader.java [19:50]

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

    public InputStream call() throws Exception {
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        
        conn.setConnectTimeout(6000);
        conn.setReadTimeout(10000);
        conn.setRequestProperty("Accept",          "application/json");
        conn.setRequestProperty("Accept-Encoding", "gzip");
        if (lastEtag != null) {
            conn.setRequestProperty("If-None-Match", lastEtag);
        }
        
        conn.connect();
        
        // force a connection to test if the URL is reachable
        final int status = conn.getResponseCode();
        if (status == 200) {
            lastEtag = conn.getHeaderField("ETag");
            
            InputStream input = conn.getInputStream();
            if ("gzip".equals(conn.getContentEncoding())) {
                input = new GZIPInputStream(input);
            }
            return input;
        }
        else if (status == 304) {
            // It is expected the reader will treat this as a noop response
            return null;
        }
        else {
            throw new RuntimeException("Failed to read input " + conn.getResponseCode());
        }
    }