1 files changed, 107 insertions, 0 deletions
diff --git a/src/java/ru/sape/SapeConnection.java b/src/java/ru/sape/SapeConnection.java
new file mode 100644
index 00000000..8c794b08
--- /dev/null
+++ b/src/java/ru/sape/SapeConnection.java
@@ -0,0 +1,107 @@
+package ru.sape;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.io.StringWriter;
+import java.net.HttpURLConnection;
+import java.net.URL;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class SapeConnection {
+
+    private final String version = "1.0.3";
+    private final List<String> serverList = Arrays.asList("dispenser-01.sape.ru", "dispenser-02.sape.ru");
+    private final String dispenserPath;
+    private final String userAgent;
+    private final int socketTimeout;
+    private final int cacheLifeTime;
+
+    public SapeConnection(String dispenserPath, String userAgent, int socketTimeout, int cacheLifeTime) {
+        this.dispenserPath = dispenserPath;
+        this.userAgent = userAgent;
+        this.socketTimeout = socketTimeout;
+        this.cacheLifeTime = cacheLifeTime;
+    }
+
+    protected String fetchRemoteFile(String host, String path) throws IOException {
+        Reader r = null;
+
+        try {
+            HttpURLConnection connection = (HttpURLConnection) ((new URL(("http://" + host + path)).openConnection()));
+
+            if (socketTimeout > 0) {
+                connection.setConnectTimeout(socketTimeout);
+                connection.setReadTimeout(socketTimeout);
+            }
+
+            connection.addRequestProperty("User-Agent", userAgent + ' ' + version);
+
+            connection.setDoOutput(true);
+            connection.setDoInput(true);
+            connection.setUseCaches(false);
+            connection.setRequestMethod("GET");
+            connection.connect();
+
+            r = new BufferedReader(new InputStreamReader(connection.getInputStream(), "UTF-8"));
+
+            StringWriter sw = new StringWriter();
+
+            int b;
+
+            while ((b = r.read()) != -1) {
+                sw.write(b);
+            }
+
+            return sw.toString();
+        } finally {
+            if (r != null) {
+                r.close();
+            }
+        }
+    }
+    Map<String, Object> cached;
+    long cacheUpdated;
+
+    @SuppressWarnings("unchecked")
+    public Map<String, Object> getData() {
+        if (cacheLifeTime <= (System.currentTimeMillis() - cacheUpdated) / 1000) {
+            for (String server : serverList) {
+                String data;
+
+                try {
+                    data = fetchRemoteFile(server, dispenserPath + "&charset=UTF-8");
+                } catch (IOException e1) {
+                    continue;
+                }
+
+                if (data.startsWith("FATAL ERROR:")) {
+                    System.err.println("Sape responded with error: " + data);
+
+                    continue;
+                }
+
+                try {
+                    cached = (Map<String, Object>) new SerializedPhpParser(data).parse();
+                } catch (Exception e) {
+                    System.err.println("Can't parse Sape data: " + e);
+                    continue;
+                }
+
+                cacheUpdated = System.currentTimeMillis();
+
+                return cached;
+            }
+
+            System.err.println("Unable to fetch Sape data");
+
+            return new HashMap<String, Object>();
+        }
+
+        return cached;
+    }
+}