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Add read-only Kubernetes cluster mirror mode with filtering and 3D layered layout #35

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568 changes: 530 additions & 38 deletions index.html
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178 changes: 162 additions & 16 deletions js/engine/ClusterState.js
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Original file line number Diff line number Diff line change
Expand Up @@ -39,24 +39,58 @@ export class ClusterState {
this._watchCallbacks = new Map();
this._batchMode = false;
this._batchedEvents = [];
this.readOnly = false;
this.readOnlyReason = '';
this.mirrorInfo = null;

for (const kind of RESOURCE_KINDS) {
this.kindIndex.set(kind, new Set());
}

this._initDefaultNamespaces();
this._initDefaultNamespaces({ force: true });
}

_initDefaultNamespaces() {
_initDefaultNamespaces(options = {}) {
const defaults = ['default', 'kube-system', 'kube-public', 'kube-node-lease'];
for (const ns of defaults) {
const resource = new ResourceBase('Namespace', 'v1', ns, '');
resource.setPhase('Active');
resource.setLabel('kubernetes.io/metadata.name', ns);
this.add(resource);
this.add(resource, options);
}
}

setReadOnly(enabled, reason = '') {
this.readOnly = Boolean(enabled);
this.readOnlyReason = this.readOnly ? reason : '';
if (!this.readOnly) {
this.mirrorInfo = null;
}
if (this.eventBus) {
this.eventBus.emit('cluster:readonly-changed', {
readOnly: this.readOnly,
reason: this.readOnlyReason,
mirrorInfo: this.mirrorInfo,
});
}
}

isReadOnly() {
return this.readOnly;
}

_canWrite(action, options = {}) {
if (!this.readOnly || options.force) return true;
if (this.eventBus) {
this.eventBus.emit('cluster:write-blocked', {
action,
reason: this.readOnlyReason || 'Cluster is read-only',
mirrorInfo: this.mirrorInfo,
});
}
return false;
}

get totalResources() {
return this.resources.size;
}
Expand Down Expand Up @@ -99,13 +133,14 @@ export class ClusterState {
}
}

add(resource) {
add(resource, options = {}) {
if (!this._canWrite('add', options)) return null;
if (!(resource instanceof ResourceBase)) {
throw new Error('Resource must be an instance of ResourceBase');
}
const existing = this.resources.get(resource.uid);
if (existing) {
return this.update(resource.uid, resource);
return this.update(resource.uid, resource, options);
}

this.resources.set(resource.uid, resource);
Expand All @@ -124,7 +159,8 @@ export class ClusterState {
return resource;
}

update(uid, updates) {
update(uid, updates, options = {}) {
if (!this._canWrite('update', options)) return null;
const resource = this.resources.get(uid);
if (!resource) return null;

Expand Down Expand Up @@ -168,7 +204,8 @@ export class ClusterState {
return resource;
}

remove(uid) {
remove(uid, options = {}) {
if (!this._canWrite('remove', options)) return null;
const resource = this.resources.get(uid);
if (!resource) return null;

Expand All @@ -180,7 +217,7 @@ export class ClusterState {

const children = this.getChildren(uid);
for (const child of children) {
this.remove(child.uid);
this.remove(child.uid, options);
}

this._removeFromKindIndex(resource);
Expand Down Expand Up @@ -696,7 +733,8 @@ export class ClusterState {
};
}

clear() {
clear(options = {}) {
if (!this._canWrite('clear', options)) return false;
this.resources.clear();
this.relationships.clear();
this.reverseRelationships.clear();
Expand All @@ -712,7 +750,9 @@ export class ClusterState {
set.clear();
}

this._initDefaultNamespaces();
if (!options.skipDefaultNamespaces) {
this._initDefaultNamespaces({ force: true });
}

if (this.eventBus) {
this.eventBus.emit('cluster:reset', { timestamp: Date.now() });
Expand All @@ -727,32 +767,138 @@ export class ClusterState {
return [...RESOURCE_KINDS];
}

addResource(obj) {
addResource(obj, options = {}) {
if (!this._canWrite('addResource', options)) return null;
const ns = isClusterScopedKind(obj.kind) ? '' : (obj.metadata?.namespace || 'default');

const resource = new ResourceBase(obj.kind, {
apiVersion: obj.apiVersion || 'v1',
name: obj.name || obj.metadata?.name || 'unnamed',
namespace: ns,
labels: obj.metadata?.labels || {},
annotations: obj.metadata?.annotations || {},
ownerReferences: obj.metadata?.ownerReferences || [],
finalizers: obj.metadata?.finalizers || [],
});
if (obj.metadata?.uid) resource.metadata.uid = obj.metadata.uid;
if (obj.metadata?.creationTimestamp) resource.metadata.creationTimestamp = obj.metadata.creationTimestamp;
if (obj.metadata?.generation) resource.metadata.generation = obj.metadata.generation;
if (obj.metadata?.resourceVersion) resource.metadata.resourceVersion = obj.metadata.resourceVersion;
if (obj.spec) {
resource.spec = typeof obj.spec === 'object' ? { ...obj.spec } : {};
}
if (obj.status?.phase) {
resource.setPhase(obj.status.phase);
resource.spec = typeof obj.spec === 'object' ? JSON.parse(JSON.stringify(obj.spec)) : {};
}
if (obj.status) {
resource.status = {
...resource.status,
...JSON.parse(JSON.stringify(obj.status)),
phase: obj.status.phase || this._derivePhase(obj),
conditions: Array.isArray(obj.status.conditions) ? JSON.parse(JSON.stringify(obj.status.conditions)) : [],
};
} else {
resource.status.phase = this._derivePhase(obj);
}
return this.add(resource);
return this.add(resource, options);
}

removeResource(kind, name, namespace = 'default') {
if (!this._canWrite('removeResource')) return null;
const key = `${kind}:${namespace}:${name}`;
const uid = this.nameIndex.get(key);
if (uid) {
return this.remove(uid);
}
return null;
}

importSnapshot(objects, options = {}) {
const previousReadOnly = this.readOnly;
const previousReason = this.readOnlyReason;

this.setReadOnly(false);
this.clear({ force: true, skipDefaultNamespaces: true });

const imported = [];
for (const obj of objects) {
const normalized = this._normalizeKubernetesObject(obj);
if (!normalized) continue;
const resource = this.addResource(normalized, { force: true });
if (resource) imported.push(resource);
}

const readOnly = options.readOnly ?? previousReadOnly;
if (readOnly) {
this.mirrorInfo = {
source: options.source || 'Kubernetes snapshot',
importedAt: Date.now(),
resourceCount: imported.length,
};
this.setReadOnly(true, options.reason || previousReason || 'Mirrored cluster is read-only');
}

if (this.eventBus) {
this.eventBus.emit('cluster:imported', {
resources: imported,
count: imported.length,
readOnly: this.readOnly,
mirrorInfo: this.mirrorInfo,
});
}

return imported;
}

_normalizeKubernetesObject(obj) {
if (!obj || typeof obj !== 'object' || !obj.kind || !obj.metadata?.name) return null;
const metadata = obj.metadata || {};
const spec = obj.spec && typeof obj.spec === 'object' ? JSON.parse(JSON.stringify(obj.spec)) : {};
for (const [key, value] of Object.entries(obj)) {
if (['apiVersion', 'kind', 'metadata', 'spec', 'status'].includes(key)) continue;
if (key === 'managedFields') continue;
if (value !== undefined && spec[key] === undefined) {
spec[key] = JSON.parse(JSON.stringify(value));
}
}
return {
apiVersion: obj.apiVersion || 'v1',
kind: obj.kind,
name: metadata.name,
metadata: {
...metadata,
namespace: isClusterScopedKind(obj.kind) ? '' : (metadata.namespace || 'default'),
labels: metadata.labels || {},
annotations: metadata.annotations || {},
ownerReferences: metadata.ownerReferences || [],
finalizers: metadata.finalizers || [],
},
spec,
status: obj.status || { phase: this._derivePhase(obj) },
};
}

_derivePhase(obj) {
if (obj.status?.phase) return obj.status.phase;
if (obj.kind === 'Namespace') return obj.status?.phase || 'Active';
if (obj.kind === 'Node') {
const ready = (obj.status?.conditions || []).find((c) => c.type === 'Ready');
return ready?.status === 'True' ? 'Running' : 'NotReady';
}
if (['Deployment', 'StatefulSet', 'ReplicaSet'].includes(obj.kind)) {
const desired = obj.spec?.replicas ?? 1;
const ready = obj.status?.readyReplicas ?? obj.status?.availableReplicas ?? 0;
return ready >= desired ? 'Running' : 'Pending';
}
if (obj.kind === 'DaemonSet') {
const desired = obj.status?.desiredNumberScheduled ?? 0;
const ready = obj.status?.numberReady ?? 0;
return desired > 0 && ready >= desired ? 'Running' : 'Pending';
}
if (obj.kind === 'Job') {
if (obj.status?.failed) return 'Failed';
if (obj.status?.succeeded) return 'Succeeded';
return obj.status?.active ? 'Running' : 'Pending';
}
Comment on lines +895 to +899

@coderabbitai coderabbitai Bot May 26, 2026

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⚠️ Potential issue | 🟡 Minor | ⚡ Quick win

Keep imported Job completion status aligned with the rest of the engine.

Completed Jobs are marked as Complete elsewhere in this class, but mirror imports derive Succeeded instead. That makes imported snapshots diverge from in-app Job status handling and can misclassify finished Jobs in status-based UI.

Suggested fix 
-      if (obj.status?.succeeded) return 'Succeeded';
+      if (obj.status?.succeeded) return 'Complete';
🤖 Prompt for AI Agents 
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@js/engine/ClusterState.js` around lines 895 - 899, Imported Job completion
uses the string "Succeeded" but elsewhere in ClusterState.js completed Jobs are
marked "Complete"; update the Job handling branch (the obj.kind === 'Job' block)
to return 'Complete' when obj.status?.succeeded is truthy (leaving the failed,
active/Running, and Pending branches unchanged) so imported snapshots use the
same "Complete" status as the rest of the engine.

return 'Running';
}
}

export default ClusterState;
23 changes: 22 additions & 1 deletion js/engine/GameEngine.js
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Original file line number Diff line number Diff line change
Expand Up @@ -123,6 +123,7 @@ const GAME_MODES = {
SANDBOX: 'sandbox',
CHAOS: 'chaos',
CHALLENGE: 'challenge',
MIRROR: 'mirror',
};

const GAME_STATES = {
Expand Down Expand Up @@ -242,6 +243,10 @@ export class GameEngine {
this._score -= 5;
}
});

this.eventBus.on('cluster:write-blocked', (data) => {
this._addNotification('warning', data.reason || 'Mirrored cluster is read-only');
});
}

start() {
Expand Down Expand Up @@ -403,6 +408,13 @@ export class GameEngine {

this.eventBus.emit('command:executed', command);

if (this.cluster.isReadOnly?.() && this._isMutatingCommand(command)) {
const message = this.cluster.readOnlyReason || 'Mirrored cluster is read-only';
this.eventBus.emit('command:blocked', { command, message });
this.eventBus.emit('cluster:write-blocked', { action: command.type, reason: message });
return { success: false, message };
}

switch (command.type) {
case 'create':
return this._handleCreate(command);
Expand Down Expand Up @@ -430,6 +442,14 @@ export class GameEngine {
}
}

_isMutatingCommand(command) {
if (!command) return false;
if (command.type === 'rollout') {
return command.subcommand !== 'status' && command.subcommand !== 'history';
}
return ['create', 'delete', 'scale', 'apply', 'cordon', 'uncordon', 'drain'].includes(command.type);
}

_handleCreate(command) {
const { kind, name, namespace, spec } = command;
const existing = this.cluster.getByName(kind, name, namespace);
Expand Down Expand Up @@ -810,7 +830,8 @@ export class GameEngine {

reset() {
this.stop();
this.cluster.clear();
this.cluster.setReadOnly(false);
this.cluster.clear({ force: true });
this.simulation.reset();
this.eventBus.clearHistory();

Expand Down
12 changes: 12 additions & 0 deletions js/engine/SimulationTick.js
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Original file line number Diff line number Diff line change
Expand Up @@ -44,6 +44,18 @@ export class SimulationTick {
this.tickCount++;
const dt = deltaTime * this.tickRate;

if (this.cluster.isReadOnly?.()) {
if (this.eventBus) {
this.eventBus.emit('simulation:tick', {
tickCount: this.tickCount,
deltaTime: dt,
stats: this.cluster.getClusterStats(),
readOnly: true,
});
}
return;
}

this.cluster.startBatch();

this._tickNodes(dt);
Expand Down
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