Functions have access to secrets/configmaps specified by the user (#399)

This commit solves part of the issue #52 , functions are able to access secrets/configmaps specified by the user. For now, CLI only accept one secret/configmap. For advanced users, it will be able to use YAML to declare multiple secrets/configmaps in later changes.

test/tests/test_secret_cfgmap/cfgmap.py.template

@@ -0,0 +1,5 @@
+def main():
+	path = "/configs/default/{{ FN_CFGMAP }}/TEST_KEY"
+	f = open(path, "r")
+	data = f.read()
+	return data, 200

test/tests/test_secret_cfgmap/empty.py

@@ -0,0 +1,7 @@
+import os
+def main():
+	cfgmap_path = "/configs/"
+	secret_path = "/secrets/"
+	if os.listdir(cfgmap_path) or os.listdir(secret_path):
+		return "no", 400
+	return "yes", 200

test/tests/test_secret_cfgmap/secret.py.template

@@ -0,0 +1,6 @@
+def main():
+	path = "/secrets/default/{{ FN_SECRET }}/TEST_KEY"
+	f = open(path, "r")
+	data = f.read()
+	#print()
+	return data, 200

test/tests/test_secret_cfgmap/test_secret_cfgmap.sh

@@ -0,0 +1,113 @@
+#!/bin/bash
+
+set -euo pipefail
+
+ROOT=$(dirname $0)/../..
+
+fn=testnormal-$(date +%s)
+fn_secret=testsecret-$(date +%s)
+fn_cfgmap=testcfgmap-$(date +%s)
+
+cp secret.py.template secret.py
+sed -i "s/{{ FN_SECRET }}/${fn_secret}/g" secret.py
+
+cp cfgmap.py.template cfgmap.py
+sed -i "s/{{ FN_CFGMAP }}/${fn_cfgmap}/g" cfgmap.py
+
+function cleanup {
+    echo "Cleanup everything"
+    kubectl delete secret -n default ${fn_secret}
+    kubectl delete configmap -n default ${fn_cfgmap}
+    fission function delete --name ${fn_secret}
+    fission function delete --name ${fn_cfgmap}
+    fission function delete --name ${fn}
+    var=$(fission route list | grep ${fn_secret} | awk '{print $1;}')
+    var2=$(fission route list | grep ${fn_cfgmap} | awk '{print $1;}')
+    var3=$(fission route list | grep ${fn} | awk '{print $1;}')
+    fission route delete --name ${var}
+    fission route delete --name ${var2}
+    fission route delete --name ${var3}
+}
+
+# Create a hello world function in nodejs, test it with an http trigger
+echo "Pre-test cleanup"
+fission env delete --name python || true
+
+echo "Creating python env"
+fission env create --name python --image fission/python-env
+trap "fission env delete --name python" EXIT
+
+echo "Creating secret"
+kubectl create secret generic ${fn_secret} --from-literal=TEST_KEY="TESTVALUE" -n default
+trap "kubectl delete secret ${fn_secret} -n default" EXIT
+
+
+echo "Creating function with secret"
+fission fn create --name ${fn_secret} --env python --code secret.py --secret ${fn_secret}
+trap "fission fn delete --name ${fn_secret}" EXIT
+
+echo "Creating route"
+fission route create --function ${fn_secret} --url /${fn_secret} --method GET
+
+echo "Waiting for router to catch up"
+sleep 5
+
+echo "HTTP GET on the function's route"
+res=$(curl http://${FISSION_ROUTER}/${fn_secret})
+val='TESTVALUE'
+
+if [[ ${res} != ${val} ]]
+then
+	echo "test secret failed"
+	cleanup
+	exit 1
+fi
+echo "test secret passed"
+
+echo "Creating configmap"
+kubectl create configmap ${fn_cfgmap} --from-literal=TEST_KEY=TESTVALUE -n default
+trap "kubectl delete configmap ${fn_cfgmap} -n default" EXIT
+
+echo "creating function with configmap"
+fission fn create --name ${fn_cfgmap} --env python --code cfgmap.py --configmap ${fn_cfgmap}
+trap "fission fn delete --name ${fn_cfgmap}" EXIT
+
+echo "Creating route"
+fission route create --function ${fn_cfgmap} --url /${fn_cfgmap} --method GET
+
+echo "Waiting for router to catch up"
+sleep 5
+
+echo "HTTP GET on the function's route"
+rescfg=$(curl http://${FISSION_ROUTER}/${fn_cfgmap})
+
+if [ ${rescfg} != ${val} ]
+then
+	echo "test cfgmap failed"
+	cleanup
+	exit 1
+fi
+echo "test configmap passed"
+
+echo "testing creating a function without a secret or configmap"
+fission function create --name ${fn} --env python --code empty.py
+trap "fission fn delete --name ${fn}" EXIT
+
+echo "Creating route"
+fission route create --function ${fn} --url /${fn} --method GET
+
+echo "Waiting for router to catch up"
+sleep 5
+
+echo "HTTP GET on the function's route"
+resnormal=$(curl http://${FISSION_ROUTER}/${fn})
+if [ ${resnormal} != "yes" ]
+then
+	echo "test empty failed"
+	cleanup
+	exit 1
+fi
+echo "test empty passed"
+
+echo "All done."
+trap "cleanup" EXIT