Add Ingress host, path and annotations support (#1325)

For each ingress controller, the format of ingress host,
path and annotations are different. To support different
kinds of controller, this PR adds new ingress config field
to http trigger spec. A user can set annotations, host and
path based on the type of underlying ingress controller
with CLI.

Command example:

fission route create --name foo \
    --url /foo/{bar} --function foofn --createingress \
    --ingressannotation "nginx.ingress.kubernetes.io/ssl-redirect=false" \
    --ingressannotation "nginx.ingress.kubernetes.io/use-regex=true" \
    --ingressrule "*=/foo/*"

test/tests/test_ingress.sh

@@ -7,50 +7,105 @@ echo "TEST_ID = $TEST_ID"
 
 ROOT=$(dirname $0)/../..
 
+env=nodejs-$TEST_ID
 relativeUrl="/itest-$TEST_ID"
 functionName="hellotest-$TEST_ID"
 hostName="test-$TEST_ID.com"
+routeName="ingress-$TEST_ID"
 
 cleanup() {
     clean_resource_by_id $TEST_ID
 }
 
+checkIngress() {
+    local route=$1
+    local host=$2
+    local path=$3
+    local annotations=$4
+
+    log "Ingresses matching this trigger:"
+    kubectl get ing -l 'functionName='$functionName',triggerName='$route --all-namespaces -o=json
+
+    log "Verifying to route value in ingress"
+    actual_path=$(kubectl get ing -l "functionName=$functionName,triggerName=$route" --all-namespaces -o=jsonpath='{.items[0].spec.rules[0].http.paths[0].path}')
+
+    if [ "$path" != "$actual_path" ]
+    then
+        log "Provided route ($path) and route ($actual_path) in ingress don't match"
+        exit 1
+    fi
+
+    actual_host=$(kubectl get ing -l "functionName=$functionName,triggerName=$route" --all-namespaces -o=jsonpath='{.items[0].spec.rules[0].host}')
+
+    if [ "$host" != "$actual_host" ]
+    then
+        log "Provided host ($host) and host ($actual_host) in ingress don't match"
+        exit 1
+    fi
+
+    actual_ann=$(kubectl get ing -l "functionName=$functionName,triggerName=$route" --all-namespaces -o jsonpath="{.items[0].metadata.annotations}")
+    if [ "$annotations" != "$actual_ann" ]
+    then
+        log "Provided annotations ($annotations) and annotations ($actual_ann) in ingress don't match"
+        exit 1
+    fi
+}
+
+createFn() {
+    # Create a hello world function in nodejs, test it with an http trigger
+    log "Creating nodejs env"
+    fission env create --name $env --image $NODE_RUNTIME_IMAGE
+
+    log "Creating function"
+    fission fn create --name $functionName --env $env --code $ROOT/examples/nodejs/hello.js
+
+    log "Doing an HTTP GET on the function's route"
+    response=$(fission fn test --name $functionName)
+
+    log "Checking for valid response"
+    echo $response | grep -i hello
+}
+
 if [ -z "${TEST_NOCLEANUP:-}" ]; then
     trap cleanup EXIT
 else
     log "TEST_NOCLEANUP is set; not cleaning up test artifacts afterwards."
 fi
 
+createFn
+
 log "Creating route for URL $relativeUrl"
-route_name=$(fission route create --url $relativeUrl --function $functionName --createingress| grep trigger| cut -d" " -f 2|cut -d"'" -f 2)
+fission route create --name $routeName --url $relativeUrl --function $functionName --createingress
 
-log "Route $route_name created"
-
-sleep 5
-
-log "Ingresses matching this trigger:"
-kubectl get ing -l 'functionName='$functionName',triggerName='$route_name --all-namespaces -o=json
-
-log "Verifying to route value in ingress"
-actual_route=$(kubectl -n fission get ing -l 'functionName='$functionName',triggerName='$route_name --all-namespaces -o=jsonpath='{.items[0].spec.rules[0].http.paths[0].path}')
-
-if [ $actual_route != $relativeUrl ]
-then
-    log "Provided route and route in ingress don't match"
-    exit 1
-fi
+sleep 3
+checkIngress $routeName "" $relativeUrl ""
 
 log "Modifying the route by adding host"
-fission route update --name $route_name --host $hostName --function $functionName
+fission route update --name $routeName --function $functionName --ingressannotation "foo=bar" --ingressrule "$hostName=/foo/bar"
 
-sleep 2
+sleep 3
+checkIngress $routeName $hostName "/foo/bar" "map[foo:bar]"
 
-actual_host=$(kubectl get ing -l 'functionName='$functionName',triggerName='$route_name --all-namespaces -o=jsonpath='{.items[0].spec.rules[0].host}')
+log "Remove ingress annotations, host and rule"
+fission route update --name $routeName --function $functionName --ingressannotation "-" --ingressrule "-"
 
-if [ $hostName != $actual_host ]
-then
-    log "Provided host and host in ingress don't match"
-    exit 1
-fi
+sleep 3
+checkIngress $routeName "" $relativeUrl ""
+
+fission route delete --name $routeName
+
+relativeUrl="/itest-$TEST_ID/{url}"
+wildcardPath="/itest-$TEST_ID/*"
+realPath="itest-$TEST_ID/test"
+
+log "Creating route for wildcard URL $relativeUrl"
+fission route create --name $routeName --url $relativeUrl --function $functionName --createingress \
+    --ingressannotation "nginx.ingress.kubernetes.io/ssl-redirect=false" \
+    --ingressannotation "nginx.ingress.kubernetes.io/use-regex=true" \
+    --ingressrule "*=$wildcardPath"
+
+sleep 3
+checkIngress $routeName "" $wildcardPath "map[nginx.ingress.kubernetes.io/ssl-redirect:false nginx.ingress.kubernetes.io/use-regex:true]"
+timeout 10 bash -c "test_ingress $realPath 'hello, world!'"
 
 log "Test PASSED"