Added exception handling to postback and implemented waiting properly.

2014-11-17 10:00:15 +00:00
parent 3e12845345
commit 3d86a3e149
25 changed files with 336 additions and 62 deletions
@@ -0,0 +1,68 @@
+package uk.ac.ic.wlgitbridge.application;
+
+import com.google.gson.Gson;
+import com.google.gson.JsonElement;
+import com.google.gson.JsonObject;
+import uk.ac.ic.wlgitbridge.bridge.WriteLatexDataSource;
+import uk.ac.ic.wlgitbridge.writelatex.SnapshotPostException;
+import uk.ac.ic.wlgitbridge.writelatex.api.request.base.JSONSource;
+import uk.ac.ic.wlgitbridge.writelatex.api.request.push.UnexpectedPostbackException;
+
+/**
+ * Created by Winston on 17/11/14.
+ */
+public class SnapshotPushPostbackContents implements JSONSource {
+
+    private static final String CODE_SUCCESS = "upToDate";
+
+    private final WriteLatexDataSource writeLatexDataSource;
+    private final String projectName;
+
+    private final SnapshotPostExceptionBuilder snapshotPostExceptionBuilder;
+
+    private int versionID;
+    private SnapshotPostException exception;
+
+    public SnapshotPushPostbackContents(WriteLatexDataSource writeLatexDataSource, String projectName, String contents) {
+        this.projectName = projectName;
+        this.writeLatexDataSource = writeLatexDataSource;
+        snapshotPostExceptionBuilder = new SnapshotPostExceptionBuilder();
+        fromJSON(new Gson().fromJson(contents, JsonElement.class));
+    }
+
+    @Override
+    public void fromJSON(JsonElement json) {
+        JsonObject responseObject = json.getAsJsonObject();
+        String code = responseObject.get("code").getAsString();
+        setResult(responseObject, code);
+    }
+
+    public void sendPostback() throws UnexpectedPostbackException {
+        if (exception == null) {
+            writeLatexDataSource.postbackReceivedSuccessfully(projectName, versionID);
+        } else {
+            writeLatexDataSource.postbackReceivedWithException(projectName, exception);
+        }
+    }
+
+    private void setResult(JsonObject responseObject, String code) {
+        if (code.equals(CODE_SUCCESS)) {
+            setVersionID(responseObject);
+        } else {
+            setException(responseObject, code);
+        }
+    }
+
+    private void setVersionID(JsonObject responseObject) {
+        versionID = responseObject.get("latestVerId").getAsInt();
+    }
+
+    private void setException(JsonObject responseObject, String code) {
+        try {
+            exception = snapshotPostExceptionBuilder.build(code, responseObject);
+        } catch (UnexpectedPostbackException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+}