Add bigquery-import sample.

README.md

@@ -36,11 +36,11 @@ Integrates the Google Translate API to perform automatic text translation across
 
 Make sure to keep the number of child nodes below a certain threshold. For instance this can be useful to limit the number of lines of logs or chat history below a given number.
 
-### [Full-text search via Algolia](/fulltext-search) TODO import from go/hearth-codesamples
+### [Import Data to Big Query](/bigquery-import)
 
-...
+Copies Firebase Database elements into BigQuery automatically. This can be useful for instance for logs analysis.
 
-### [Import Data to Big Query](/fulltext-search) TODO import from go/hearth-codesamples
+### [Full-text search via Algolia](/fulltext-search) TODO import from go/hearth-codesamples
 
 ...
 

bigquery-import/README.md

@@ -0,0 +1,41 @@
+# Import Data to Big Query
+
+This template shows how to keep the number of child nodes in a Firebase database below a given number. This can be used to limit the number of lines of a chat history or logs.
+
+## Cloud Function Code
+
+See file [index.js](index.js) for the code.
+
+The dependencies are listed in [package.json](package.json).
+
+## Sample Database Structure
+
+As an example we'll be using a simple logs database structure:
+
+```
+/functions-project-12345
+    /logs
+        /key-123456
+            text: "User signed in."
+        /key-123457
+            text: "Error: Could not connect to Database"
+```
+
+## Trigger rules
+
+Below is the trigger rule for the `addtobigquery` function making sure it's triggered when a new log entry is added.
+
+```
+  "functions": {
+    ".source": "functions",
+    "addtobigquery": {
+      "triggers": {
+        "database": {
+          "path": "/logs/$logid"
+        }
+      }
+    }
+  }
+```
+
+

bigquery-import/env.json

@@ -0,0 +1,10 @@
+// This file should be placed at the root of you project: the same directory as your firebase.json
+// file, not your functions source directory.
+// TODO: Input your Google Project ID, Private key and Email below.
+{
+  "google": {
+    "project_id": "<MY_GOOGLE_PROJECT_ID>",
+    "private_key": "<MY_GOOGLE_PROJECT_PRIVATE_KEY>",
+    "client_email": "<MY_GOOGLE_PROJECT_CLIENT_EMAIL>"
+  }
+}

bigquery-import/index.js

@@ -0,0 +1,63 @@
+/**
+ * Copyright 2015 Google Inc. All Rights Reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+'use strict';
+
+// Create an all access Firebase Database reference.
+var Firebase = require('firebase');
+var env = require('./env');
+var ref = new Firebase(env.get('firebase.database.url'), 'admin');
+ref.auth(env.get('firebase.database.token'));
+
+// Authenticate to gcloud.
+// TODO: Make sure you add your Google Project ID, Private key and Email into env.json
+var gcloudconfig = {
+  projectId: env.get('google.project_id'),
+  credentials: {
+    private_key: env.get('google.private_key'),
+    client_email: env.get('google.client_email')
+  }
+};
+var gcloud = require('gcloud')(gcloudconfig);
+var bigquery = gcloud.bigquery();
+// TODO: Change <YOUR-DATASET-NAME> with your BigQuery dataset name.
+var dataset = bigquery.dataset('<YOUR-DATASET-NAME>');
+// TODO: Change <YOUR-TABLE-NAME> with your BigQuery table name.
+var table = dataset.table('<YOUR-TABLE-NAME>');
+
+// Copies the Firebase Database element to BigQuery
+function addtobigquery(context, data) {
+  ref.child(data.path).once('value', function (snap) {
+    table.insert({
+      ID: snap.key(),
+      MESSAGE: snap.val().message,
+      NUMBER: snap.val().number
+    }, function(err, insertErr, resp) {
+      if (err) {
+        console.log(err);
+        context.done(err);
+      } else if (insertErr) {
+        console.log(insertErr);
+        context.done(insertErr);
+      } else {
+        context.done();
+      }
+    });
+  });
+}
+
+module.exports = {
+  addtobigquery: addtobigquery
+}

bigquery-import/package.json

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+{
+  "main": "index.js",
+  "dependencies": {
+    "firebase": "^2.4.0",
+    "gcloud": "^0.27.0"
+  }
+}