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/**
* DAG Visualization Module
* Uses Cytoscape.js for rendering workflow dependency graphs
*/
class DAGVisualizer {
constructor(containerId) {
this.containerId = containerId;
this.cy = null;
this.currentWorkflowId = null;
this.currentType = 'jobs';
}
// Status to color mapping
static statusColors = {
0: '#6c757d', // uninitialized
1: '#ffc107', // blocked
2: '#17a2b8', // ready
3: '#fd7e14', // pending
4: '#007bff', // running
5: '#28a745', // completed
6: '#dc3545', // failed
7: '#6f42c1', // canceled
8: '#adb5bd', // terminated
9: '#e9ecef', // disabled
};
static statusNames = {
0: 'Uninitialized',
1: 'Blocked',
2: 'Ready',
3: 'Pending',
4: 'Running',
5: 'Completed',
6: 'Failed',
7: 'Canceled',
8: 'Terminated',
9: 'Disabled',
};
initialize() {
const container = document.getElementById(this.containerId);
if (!container) {
console.error('DAG container not found:', this.containerId);
return;
}
// Clear placeholder
container.innerHTML = '';
this.cy = cytoscape({
container: container,
style: [
// Node styles
{
selector: 'node',
style: {
'label': 'data(label)',
'text-valign': 'center',
'text-halign': 'center',
'background-color': 'data(color)',
'color': '#fff',
'text-outline-color': 'data(color)',
'text-outline-width': 2,
'font-size': '11px',
'width': 'label',
'height': 30,
'padding': '10px',
'shape': 'roundrectangle',
}
},
// Job nodes
{
selector: 'node.job',
style: {
'shape': 'roundrectangle',
}
},
// File nodes
{
selector: 'node.file',
style: {
'shape': 'diamond',
'background-color': '#20c997',
}
},
// User data nodes
{
selector: 'node.userdata',
style: {
'shape': 'ellipse',
'background-color': '#e83e8c',
}
},
// Edge styles
{
selector: 'edge',
style: {
'width': 2,
'line-color': '#adb5bd',
'target-arrow-color': '#adb5bd',
'target-arrow-shape': 'triangle',
'curve-style': 'bezier',
'arrow-scale': 1.2,
}
},
// Input edge (file/data -> job)
{
selector: 'edge.input',
style: {
'line-color': '#28a745',
'target-arrow-color': '#28a745',
'line-style': 'dashed',
}
},
// Output edge (job -> file/data)
{
selector: 'edge.output',
style: {
'line-color': '#007bff',
'target-arrow-color': '#007bff',
}
},
// Highlighted node
{
selector: 'node:selected',
style: {
'border-width': 3,
'border-color': '#000',
}
},
],
layout: { name: 'preset' },
wheelSensitivity: 0.3,
minZoom: 0.1,
maxZoom: 3,
});
// Add click handlers
this.cy.on('tap', 'node', (evt) => {
const node = evt.target;
console.log('Node clicked:', node.data());
this.showNodeInfo(node.data());
});
}
async loadJobDependencies(workflowId) {
this.currentWorkflowId = workflowId;
this.currentType = 'jobs';
try {
// Get jobs and their dependencies
const [jobs, dependencies] = await Promise.all([
api.listJobs(workflowId),
api.getJobsDependencies(workflowId),
]);
if (!jobs || jobs.length === 0) {
this.showEmpty('No jobs in this workflow');
return;
}
// Create node elements
const nodes = jobs.map(job => ({
data: {
id: `job-${job.id}`,
label: job.name || `Job ${job.id}`,
color: DAGVisualizer.statusColors[job.status] || '#6c757d',
type: 'job',
jobId: job.id,
status: job.status,
statusName: DAGVisualizer.statusNames[job.status],
},
classes: 'job',
}));
// Create edge elements from dependencies
const edges = [];
if (dependencies) {
for (const dep of dependencies) {
edges.push({
data: {
id: `edge-${dep.depends_on_job_id}-${dep.job_id}`,
source: `job-${dep.depends_on_job_id}`,
target: `job-${dep.job_id}`,
}
});
}
}
this.renderGraph(nodes, edges);
} catch (error) {
console.error('Error loading job dependencies:', error);
this.showEmpty('Error loading dependencies: ' + error.message);
}
}
async loadFileRelationships(workflowId) {
this.currentWorkflowId = workflowId;
this.currentType = 'files';
try {
const [jobs, files, relationships] = await Promise.all([
api.listJobs(workflowId),
api.listFiles(workflowId),
api.getJobFileRelationships(workflowId),
]);
if (!jobs || jobs.length === 0) {
this.showEmpty('No jobs in this workflow');
return;
}
// Create job nodes
const nodes = jobs.map(job => ({
data: {
id: `job-${job.id}`,
label: job.name || `Job ${job.id}`,
color: DAGVisualizer.statusColors[job.status] || '#6c757d',
type: 'job',
},
classes: 'job',
}));
// Create file nodes
if (files) {
for (const file of files) {
nodes.push({
data: {
id: `file-${file.id}`,
label: this.truncateName(file.name || file.path || `File ${file.id}`),
type: 'file',
},
classes: 'file',
});
}
}
// Create edges from relationships
const edges = [];
if (relationships) {
for (const rel of relationships) {
if (rel.relationship_type === 'input') {
// File -> Job (input)
edges.push({
data: {
source: `file-${rel.file_id}`,
target: `job-${rel.job_id}`,
},
classes: 'input',
});
} else if (rel.relationship_type === 'output') {
// Job -> File (output)
edges.push({
data: {
source: `job-${rel.job_id}`,
target: `file-${rel.file_id}`,
},
classes: 'output',
});
}
}
}
this.renderGraph(nodes, edges);
} catch (error) {
console.error('Error loading file relationships:', error);
this.showEmpty('Error loading file relationships: ' + error.message);
}
}
async loadUserDataRelationships(workflowId) {
this.currentWorkflowId = workflowId;
this.currentType = 'userdata';
try {
const [jobs, userData, relationships] = await Promise.all([
api.listJobs(workflowId),
api.listUserData(workflowId),
api.getJobUserDataRelationships(workflowId),
]);
if (!jobs || jobs.length === 0) {
this.showEmpty('No jobs in this workflow');
return;
}
// Create job nodes
const nodes = jobs.map(job => ({
data: {
id: `job-${job.id}`,
label: job.name || `Job ${job.id}`,
color: DAGVisualizer.statusColors[job.status] || '#6c757d',
type: 'job',
},
classes: 'job',
}));
// Create user data nodes
if (userData) {
for (const ud of userData) {
nodes.push({
data: {
id: `ud-${ud.id}`,
label: this.truncateName(ud.name || `UserData ${ud.id}`),
type: 'userdata',
},
classes: 'userdata',
});
}
}
// Create edges from relationships
const edges = [];
if (relationships) {
for (const rel of relationships) {
if (rel.relationship_type === 'input') {
edges.push({
data: {
source: `ud-${rel.user_data_id}`,
target: `job-${rel.job_id}`,
},
classes: 'input',
});
} else if (rel.relationship_type === 'output') {
edges.push({
data: {
source: `job-${rel.job_id}`,
target: `ud-${rel.user_data_id}`,
},
classes: 'output',
});
}
}
}
this.renderGraph(nodes, edges);
} catch (error) {
console.error('Error loading user data relationships:', error);
this.showEmpty('Error loading user data relationships: ' + error.message);
}
}
renderGraph(nodes, edges) {
if (!this.cy) {
this.initialize();
}
// Clear existing elements
this.cy.elements().remove();
// Add new elements
this.cy.add([...nodes, ...edges]);
// Apply dagre layout
this.cy.layout({
name: 'dagre',
rankDir: 'TB', // Top to Bottom
nodeSep: 50,
rankSep: 80,
padding: 30,
animate: true,
animationDuration: 300,
}).run();
// Show legend
const legend = document.getElementById('dag-legend');
if (legend) {
legend.style.display = 'flex';
}
}
showEmpty(message) {
const container = document.getElementById(this.containerId);
if (container) {
container.innerHTML = `<div class="placeholder-message">${message}</div>`;
}
const legend = document.getElementById('dag-legend');
if (legend) {
legend.style.display = 'none';
}
}
showNodeInfo(data) {
// Could show a tooltip or sidebar with node details
console.log('Node info:', data);
}
fitToView() {
if (this.cy) {
this.cy.fit(50);
}
}
truncateName(name, maxLen = 20) {
if (name.length > maxLen) {
return name.substring(0, maxLen - 3) + '...';
}
return name;
}
async refresh() {
if (!this.currentWorkflowId) return;
switch (this.currentType) {
case 'jobs':
await this.loadJobDependencies(this.currentWorkflowId);
break;
case 'files':
await this.loadFileRelationships(this.currentWorkflowId);
break;
case 'userdata':
await this.loadUserDataRelationships(this.currentWorkflowId);
break;
}
}
destroy() {
if (this.cy) {
this.cy.destroy();
this.cy = null;
}
}
}
// Export
const dagVisualizer = new DAGVisualizer('dag-container');