✨ Add status query

Dockerfile

@@ -18,6 +18,11 @@ RUN         pip install awscli
 
 ADD         . /app
 
+# Bake version number
+RUN         COMMIT=`git rev-parse --short HEAD` && echo "COMMIT=\"${COMMIT}\"" > /app/coordinator/version_info.py \
+            && VERSION=`git describe --always --tags` && echo "VERSION=\"${VERSION}\"" >> /app/coordinator/version_info.py
+
+
 RUN         python /app/setup.py install \
             && python /app/manage.py collectstatic -v0 --noinput
 

coordinator/graphql/schema.py

@@ -1,4 +1,5 @@
-from graphene import relay, ObjectType, Schema
+from django.core.cache import cache
+from graphene import relay, ObjectType, Field, Schema, String
 from graphene_django.types import DjangoObjectType
 from graphene_django.filter import DjangoFilterConnectionField
 
@@ -14,6 +15,17 @@
 from .users import Query as UserQuery
 
 
+def get_version_info():
+    from coordinator.version_info import COMMIT, VERSION
+    return {"commit": COMMIT, "version": VERSION}
+
+
+class Status(ObjectType):
+    name = String()
+    version = String()
+    commit = String()
+
+
 class Query(
     ObjectType,
     ReleaseQuery,
@@ -24,7 +36,17 @@ class Query(
     StudyQuery,
     UserQuery,
 ):
-    pass
+    status = Field(Status)
+
+    def resolve_status(parent, info):
+        """
+        Return status information about the coordinator.
+        """
+        # Retrieve from cache in the case that we have to parse git commands
+        # to get version details.
+        info = cache.get_or_set("VERSION_INFO", get_version_info)
+
+        return Status(name="Kids First Release Coordinator", **info)
 
 
 class Mutation(

coordinator/version_info.py

@@ -0,0 +1,10 @@
+# This file will be re-written during the Docker build. For development, the
+# following defaults are provided.
+import subprocess
+
+VERSION = subprocess.check_output(
+    ["git", "describe", "--always", "--tags"]
+).strip().decode()
+COMMIT = subprocess.check_output(
+    ["git", "rev-parse", "--short", "HEAD"]
+).strip().decode()