Add project http fetch statistics API

The API get projects/:id/traffic/fetches allows user with write
access to the repository to get the number of clones for the
last 30 days.

1 files changed, 49 insertions, 0 deletions

diff --git a/doc/api/project_statistics.md b/doc/api/project_statistics.md
new file mode 100644
index 00000000000..34d73abfcbf
--- /dev/null
+++ b/doc/api/project_statistics.md
@@ -0,0 +1,49 @@
+# Project statistics API
+
+Every API call to [project](../user/project/index.md) statistics must be authenticated.
+
+## Get the statistics of the last 30 days
+
+Retrieving the statistics requires write access to the repository.
+Currently only HTTP fetches statistics are returned.
+Fetches statistics includes both clones and pulls count and are HTTP only, SSH fetches are not included.
+
+```
+GET /projects/:id/statistics
+```
+
+| Attribute  | Type   | Required | Description |
+| ---------- | ------ | -------- | ----------- |
+| `id `      | integer / string | yes      | The ID or [URL-encoded path of the project](README.md#namespaced-path-encoding) |
+
+Example response:
+
+```json
+{
+  "fetches": {
+    "total": 50,
+    "days": [
+      {
+        "count": 10,
+        "date": "2018-01-10"
+      },
+      {
+        "count": 10,
+        "date": "2018-01-09"
+      },
+      {
+        "count": 10,
+        "date": "2018-01-08"
+      },
+      {
+        "count": 10,
+        "date": "2018-01-07"
+      },
+      {
+        "count": 10,
+        "date": "2018-01-06"
+      }
+    ]
+  }
+}
+```