add hub instance crash recovery (#885)

* add hub instance crash recovery

2 files changed, 8 insertions, 1 deletions

diff --git a/src/zenserver/frontend/html/pages/hub.js b/src/zenserver/frontend/html/pages/hub.js
index 3a5b67483..149a5c79c 100644
--- a/src/zenserver/frontend/html/pages/hub.js
+++ b/src/zenserver/frontend/html/pages/hub.js
@@ -8,7 +8,7 @@ import { Friendly } from "../util/friendly.js"
 import { Modal } from "../util/modal.js"
 
 ////////////////////////////////////////////////////////////////////////////////
-const STABLE_STATES = new Set(["provisioned", "hibernated"]);
+const STABLE_STATES = new Set(["provisioned", "hibernated", "crashed"]);
 
 function _is_actionable(state)
 {
diff --git a/src/zenserver/frontend/html/zen.css b/src/zenserver/frontend/html/zen.css
index 5ce60d2d2..49a1e6d21 100644
--- a/src/zenserver/frontend/html/zen.css
+++ b/src/zenserver/frontend/html/zen.css
@@ -1099,6 +1099,12 @@ tr:last-child td {
 .module-state-dot[data-state="provisioned"]   { background: var(--theme_ok); }
 .module-state-dot[data-state="hibernated"]    { background: var(--theme_warn); }
 .module-state-dot[data-state="unprovisioned"] { background: var(--theme_g1); }
+.module-state-dot[data-state="crashed"]       { background: var(--theme_fail); }
+
+@keyframes module-dot-recovering {
+	0%,   59.9% { background: var(--theme_fail); }
+	60%,  100%  { background: var(--theme_ok); }
+}
 
 @keyframes module-dot-hibernating {
 	0%,   59.9% { background: var(--theme_warn); }
@@ -1124,6 +1130,7 @@ tr:last-child td {
 .module-state-dot[data-state="hibernating"]  { animation: module-dot-hibernating  1s steps(1, end) infinite; }
 .module-state-dot[data-state="waking"]       { animation: module-dot-waking       1s steps(1, end) infinite; }
 .module-state-dot[data-state="provisioning"] { animation: module-dot-provisioning 1s steps(1, end) infinite; }
+.module-state-dot[data-state="recovering"]   { animation: module-dot-recovering   1s steps(1, end) infinite; }
 .module-state-dot[data-state="deprovisioning"][data-prev-state="provisioned"] {
 	animation: module-dot-deprovisioning-from-provisioned 1s steps(1, end) infinite;
 }