/data-bind

drawio:data-bind

Bind diagram elements to live data sources for conditional formatting and dynamic updates. This command transforms static architecture diagrams into living dashboards that reflect real-time system state through color coding, icons, labels, and visual indicators.

---

Flags

Flag	Alias	Type	Default	Description
--source <type>	-s	string	none	Data source type (jira, github, k8s, prometheus, rest, csv, json)
--url <endpoint>	-u	string	none	REST API endpoint or data source URL
--repo <owner/repo>	-r	string	auto-detect	GitHub repository for GitHub Actions / PR status binding
--namespace <ns>	-N	string	default	Kubernetes namespace for pod/service status binding
--port <n>	-p	number	varies	Port for data source connections (e.g., Prometheus 9090)
--output <path>	-o	string	in-place	Output path for the data-bound diagram
--refresh-interval <sec>	-R	number	0	Auto-refresh interval in seconds (0 = one-shot)
--format <fmt>	-f	string	drawio	Output format after binding (drawio, svg, png)
--template <file>	-t	string	none	Template diagram to use as the binding target
--filter <expr>	-F	string	none	Filter expression to select specific data points
--transform <script>	-T	string	none	JavaScript transform function applied to data before binding
--staged		boolean	false	Only process staged (git add) diagram files
--watch	-w	boolean	false	Watch for data source changes and re-bind continuously
--quiet	-q	boolean	false	Suppress informational output
--verbose	-v	boolean	false	Show detailed data fetching and binding operations
--dry-run	-n	boolean	false	Fetch data and show what would change without modifying the diagram

Flag Details

Data Source Flags

• --source <type> (-s): The external data provider. jira fetches issue status and assignments. github reads CI/CD status, PR state, and deployments. k8s queries pod health, replica counts, and resource usage. prometheus pulls metrics. rest calls arbitrary REST APIs. csv/json reads local data files.
• --url <endpoint> (-u): Connection URL for the data source. For REST: the full API endpoint. For Prometheus: the query API URL. For K8s: the cluster API server (defaults to in-cluster config).
• --repo <owner/repo> (-r): GitHub repository identifier for binding CI status, PR comments, and deployment state. Auto-detected from git remote when omitted.
• --namespace <ns> (-N): Kubernetes namespace to query. Binds pod status, service endpoints, and resource metrics to diagram elements.
• --port <n> (-p): Override the default port for data source connections.

Binding Control Flags

• --template <file> (-t): Use a template diagram with placeholder %variable% syntax. Data values replace placeholders during binding.
• --filter <expr> (-F): Select specific data points. Syntax depends on source type. For Jira: JQL expression. For K8s: label selector. For REST: JSONPath expression.
• --transform <script> (-T): A JavaScript one-liner or file path to a transform function. Applied to each data point before binding. Example: --transform "d => ({...d, status: d.health > 90 ? 'healthy' : 'degraded'})".

Refresh & Watch Flags

• --refresh-interval <sec> (-R): Re-fetch data and update the diagram at this interval. Use with --output to continuously update an exported image. Set to 0 for a single binding pass.
• --watch (-w): Continuously monitor the data source for changes and re-bind when detected. Uses webhooks or polling depending on the source type.

Output Flags

• --output <path> (-o): Write the bound diagram to a new file. Without this, the original file is updated in-place.
• --format <fmt> (-f): After binding data, optionally export to SVG or PNG. The .drawio file is always updated first.
• --dry-run (-n): Fetch data from the source, compute the bindings, and report what would change (cell colors, labels, values) without modifying any files.
• --verbose (-v): Show each data fetch, binding resolution, and style change as it happens.
• --quiet (-q): Suppress all output except errors. Useful in cron jobs and CI pipelines.

Examples with Flags

# Bind Kubernetes pod status to architecture diagram
drawio:data-bind architecture.drawio --source k8s --namespace production --verbose

# Bind GitHub Actions CI status
drawio:data-bind ci-pipeline.drawio --source github --repo myorg/myapp

# Bind Prometheus metrics with custom filter
drawio:data-bind infra.drawio --source prometheus --url http://prometheus:9090 --filter 'up{job="api"}'

# Bind from REST API with transform
drawio:data-bind services.drawio --source rest --url https://api.example.com/status --transform "d => ({status: d.healthy ? 'active' : 'degraded'})"

# Dry-run to preview bindings
drawio:data-bind architecture.drawio --source k8s --namespace staging --dry-run

# Watch mode with auto-refresh every 30 seconds
drawio:data-bind dashboard.drawio --source prometheus --url http://localhost:9090 --watch --refresh-interval 30

Core Concepts

Custom Properties on Diagram Cells

Draw.io supports custom properties on cells through two mechanisms: <UserObject> tags (which replace <mxCell> as the outer element) and inline style attributes. The data-bind command leverages both to attach metadata and drive conditional formatting.

UserObject XML Structure

The <UserObject> tag wraps an <mxCell> and allows arbitrary key-value attributes that serve as data-binding points:

<!-- A service cell with bound data properties -->
<UserObject label="%name%"
            name="API Gateway"
            status="healthy"
            latency="42ms"
            uptime="99.97%"
            last_deploy="2026-03-14T10:30:00Z"
            deploy_version="v2.4.1"
            pod_count="3"
            cpu_usage="23%"
            memory_usage="512MB"
            placeholders="1"
            id="svc-api-gateway">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;
                 strokeColor=#82b366;fontSize=12;fontStyle=1;
                 shadow=1;arcSize=10;"
          vertex="1" parent="1">
    <mxGeometry x="200" y="100" width="180" height="80" as="geometry"/>
  </mxCell>
</UserObject>

Key attributes:

• placeholders="1" — Enables %variable% substitution in labels.
• Custom attributes (status, latency, etc.) — Store bound data values.
• label="%name%" — Displays the name attribute value as the cell label.

Object Tag Alternative

The <object> tag is functionally identical to <UserObject> and is the format used in newer draw.io versions:

<object label="%name% (%status%)"
        name="Auth Service"
        status="warning"
        placeholders="1"
        id="svc-auth">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;
                 strokeColor=#d6b656;fontSize=12;fontStyle=1;"
          vertex="1" parent="1">
    <mxGeometry x="400" y="100" width="180" height="80" as="geometry"/>
  </mxCell>
</object>

---

Placeholder Variables

Cell-Level Placeholders

When placeholders="1" is set on a <UserObject> or <object>, any %attributeName% in the label or tooltip is replaced with the corresponding attribute value.

<UserObject label="&lt;b&gt;%name%&lt;/b&gt;&lt;br&gt;Status: %status%&lt;br&gt;CPU: %cpu%"
            name="Worker Node 1"
            status="healthy"
            cpu="45%"
            placeholders="1"
            id="node-1">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;
                 strokeColor=#82b366;"
          vertex="1" parent="1">
    <mxGeometry x="100" y="100" width="200" height="80" as="geometry"/>
  </mxCell>
</UserObject>

Rendered label:

Worker Node 1
Status: healthy
CPU: 45%

Supported Placeholder Patterns

Pattern	Source	Example
%name%	Cell attribute	Service name
%status%	Cell attribute	healthy/warning/critical
%version%	Cell attribute	v2.4.1
%timestamp%	Cell attribute	ISO 8601 date
%metric_value%	Cell attribute	Any numeric metric
%label%	Built-in	Current cell label
%tooltip%	Built-in	Current tooltip text
%page%	Built-in	Current page number
%pagenumber%	Built-in	Same as %page%
%pagecount%	Built-in	Total page count
%date{format}%	Built-in	Formatted current date

File-Level Variables

Define variables at the diagram file level using the <mxfile> tag. These are available to all cells in all pages of the diagram:

<mxfile host="app.diagrams.net"
        type="device"
        vars='{"environment":"production","region":"us-east-1","cluster":"main","last_updated":"2026-03-14T10:30:00Z"}'>
  <diagram id="arch" name="Architecture">
    <mxGraphModel dx="1422" dy="762" grid="1" gridSize="10" guides="1"
                  tooltips="1" connect="1" arrows="1" fold="1" page="1"
                  pageScale="1" pageWidth="1169" pageHeight="827">
      <root>
        <mxCell id="0"/>
        <mxCell id="1" parent="0"/>

        <!-- This cell uses file-level variables -->
        <UserObject label="Environment: %environment%&#xa;Region: %region%&#xa;Cluster: %cluster%&#xa;Updated: %last_updated%"
                    placeholders="1"
                    id="info-panel">
          <mxCell style="text;html=1;strokeColor=#666666;fillColor=#f5f5f5;
                         align=left;verticalAlign=top;whiteSpace=wrap;
                         rounded=1;fontSize=11;spacingLeft=8;spacingTop=4;"
                  vertex="1" parent="1">
            <mxGeometry x="20" y="20" width="240" height="80" as="geometry"/>
          </mxCell>
        </UserObject>
      </root>
    </mxGraphModel>
  </diagram>
</mxfile>

Page-Level Variables

Variables can also be set per-page using diagram properties:

<diagram id="staging" name="Staging Environment"
         vars='{"env_name":"staging","env_color":"#fff2cc"}'>
  <!-- Page-level vars override file-level vars with the same name -->
</diagram>

---

Conditional Formatting Rules

Status-Based Formatting (Traffic Light Pattern)

The most common data-binding pattern maps a status field to fill and stroke colors:

Status Value    │ fillColor  │ strokeColor │ fontColor │ Icon
────────────────┼────────────┼─────────────┼───────────┼──────────────
healthy         │ #d5e8d4    │ #82b366     │ #2D6E0F   │ checkCircle
running         │ #d5e8d4    │ #82b366     │ #2D6E0F   │ play
warning         │ #fff2cc    │ #d6b656     │ #9A6700   │ alertTriangle
degraded        │ #fff2cc    │ #d6b656     │ #9A6700   │ alertTriangle
critical        │ #f8cecc    │ #b85450     │ #9C1A1A   │ xCircle
down            │ #f8cecc    │ #b85450     │ #9C1A1A   │ xCircle
unknown         │ #e1d5e7    │ #9673a6     │ #5B3A6E   │ helpCircle
maintenance     │ #dae8fc    │ #6c8ebf     │ #2B5C8A   │ wrench
deploying       │ #dae8fc    │ #6c8ebf     │ #2B5C8A   │ loader

Implementation: Status Color Mapping Script

#!/usr/bin/env python3
"""Apply conditional formatting to draw.io cells based on status attributes."""

import xml.etree.ElementTree as ET
import sys

STATUS_STYLES = {
    "healthy":     {"fillColor": "#d5e8d4", "strokeColor": "#82b366", "fontColor": "#2D6E0F"},
    "running":     {"fillColor": "#d5e8d4", "strokeColor": "#82b366", "fontColor": "#2D6E0F"},
    "warning":     {"fillColor": "#fff2cc", "strokeColor": "#d6b656", "fontColor": "#9A6700"},
    "degraded":    {"fillColor": "#fff2cc", "strokeColor": "#d6b656", "fontColor": "#9A6700"},
    "critical":    {"fillColor": "#f8cecc", "strokeColor": "#b85450", "fontColor": "#9C1A1A"},
    "down":        {"fillColor": "#f8cecc", "strokeColor": "#b85450", "fontColor": "#9C1A1A"},
    "unknown":     {"fillColor": "#e1d5e7", "strokeColor": "#9673a6", "fontColor": "#5B3A6E"},
    "maintenance": {"fillColor": "#dae8fc", "strokeColor": "#6c8ebf", "fontColor": "#2B5C8A"},
    "deploying":   {"fillColor": "#dae8fc", "strokeColor": "#6c8ebf", "fontColor": "#2B5C8A"},
}

def apply_status_formatting(drawio_path):
    tree = ET.parse(drawio_path)
    root = tree.getroot()
    updated = 0

    for obj in root.iter("UserObject"):
        status = obj.get("status", "").lower()
        if status in STATUS_STYLES:
            cell = obj.find("mxCell")
            if cell is not None:
                style = cell.get("style", "")
                for prop, value in STATUS_STYLES[status].items():
                    # Replace existing property or append
                    if f"{prop}=" in style:
                        import re
                        style = re.sub(f"{prop}=#[0-9a-fA-F]{{6}}", f"{prop}={value}", style)
                    else:
                        style = style.rstrip(";") + f";{prop}={value};"
                cell.set("style", style)
                updated += 1

    tree.write(drawio_path, xml_declaration=True, encoding="UTF-8")
    print(f"Updated {updated} cells in {drawio_path}")

if __name__ == "__main__":
    apply_status_formatting(sys.argv[1])

Deployment State Formatting

Maps deployment lifecycle states to visual styles:

<!-- Deploying: animated dashed border + blue fill -->
<UserObject label="%name%&#xa;Deploying %version%..."
            name="Payment Service"
            status="deploying"
            version="v3.1.0"
            placeholders="1"
            id="svc-payment">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#dae8fc;
                 strokeColor=#6c8ebf;fontSize=12;fontStyle=1;
                 dashed=1;dashPattern=8 4;strokeWidth=2;
                 shadow=0;glass=0;"
          vertex="1" parent="1">
    <mxGeometry x="200" y="200" width="180" height="70" as="geometry"/>
  </mxCell>
</UserObject>

<!-- Deployed: solid green border + green fill + shadow -->
<UserObject label="%name%&#xa;%version% ✓"
            name="Payment Service"
            status="deployed"
            version="v3.1.0"
            placeholders="1"
            id="svc-payment">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;
                 strokeColor=#82b366;fontSize=12;fontStyle=1;
                 strokeWidth=2;shadow=1;"
          vertex="1" parent="1">
    <mxGeometry x="200" y="200" width="180" height="70" as="geometry"/>
  </mxCell>
</UserObject>

<!-- Failed: red fill + thick red border -->
<UserObject label="%name%&#xa;DEPLOY FAILED"
            name="Payment Service"
            status="failed"
            version="v3.1.0"
            placeholders="1"
            id="svc-payment">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f8cecc;
                 strokeColor=#b85450;fontSize=12;fontStyle=1;
                 strokeWidth=3;shadow=0;fontColor=#9C1A1A;"
          vertex="1" parent="1">
    <mxGeometry x="200" y="200" width="180" height="70" as="geometry"/>
  </mxCell>
</UserObject>

Test Coverage Gradient

Map test coverage percentages to a color gradient from red through yellow to green:

def coverage_to_color(percentage):
    """Convert coverage percentage to hex color on a red-yellow-green gradient."""
    if percentage < 0:
        percentage = 0
    if percentage > 100:
        percentage = 100

    if percentage < 50:
        # Red to Yellow (0-50%)
        r = 248
        g = int(206 + (242 - 206) * (percentage / 50))
        b = int(204 + (204 - 204) * (percentage / 50))
    else:
        # Yellow to Green (50-100%)
        r = int(255 - (255 - 213) * ((percentage - 50) / 50))
        g = int(242 + (232 - 242) * ((percentage - 50) / 50))
        b = int(204 + (212 - 204) * ((percentage - 50) / 50))

    return f"#{r:02x}{g:02x}{b:02x}"

# Coverage thresholds and their visual mapping
COVERAGE_THRESHOLDS = [
    (90, "#d5e8d4", "Excellent"),   # Green
    (75, "#c8e6c0", "Good"),        # Light green
    (60, "#fff2cc", "Adequate"),    # Yellow
    (40, "#fce5b0", "Low"),         # Orange-yellow
    (20, "#f8cecc", "Poor"),        # Light red
    (0,  "#e6b8b7", "Critical"),   # Red
]

<!-- Module with 92% coverage: green fill -->
<UserObject label="%module%&#xa;Coverage: %coverage%%"
            module="auth"
            coverage="92"
            placeholders="1"
            id="mod-auth">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;
                 strokeColor=#82b366;fontSize=11;"
          vertex="1" parent="1">
    <mxGeometry x="100" y="100" width="140" height="50" as="geometry"/>
  </mxCell>
</UserObject>

<!-- Module with 34% coverage: red fill -->
<UserObject label="%module%&#xa;Coverage: %coverage%%"
            module="payments"
            coverage="34"
            placeholders="1"
            id="mod-payments">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f8cecc;
                 strokeColor=#b85450;fontSize=11;"
          vertex="1" parent="1">
    <mxGeometry x="300" y="100" width="140" height="50" as="geometry"/>
  </mxCell>
</UserObject>

API Latency Visual Indicators

Latency Range     │ Fill Color │ Border    │ Extra Style
──────────────────┼────────────┼───────────┼──────────────────
< 100ms           │ #d5e8d4    │ #82b366   │ (none)
100ms - 500ms     │ #fff2cc    │ #d6b656   │ strokeWidth=2
500ms - 1000ms    │ #fce5b0    │ #d4a020   │ strokeWidth=2
1000ms - 3000ms   │ #f8cecc    │ #b85450   │ strokeWidth=3
> 3000ms          │ #e6b8b7    │ #9C1A1A   │ strokeWidth=3;dashed=1

Sprint Progress Bars

Represent sprint completion as a progress bar within a cell using nested rectangles:

<!-- Sprint card with progress bar -->
<UserObject label="Sprint 24&#xa;%completed%/%total% stories"
            completed="7"
            total="12"
            percentage="58"
            placeholders="1"
            id="sprint-24">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#f5f5f5;
                 strokeColor=#666666;fontSize=12;fontStyle=1;
                 verticalAlign=top;spacingTop=8;"
          vertex="1" parent="1">
    <mxGeometry x="100" y="100" width="200" height="80" as="geometry"/>
  </mxCell>
</UserObject>

<!-- Progress bar background (gray) -->
<mxCell id="progress-bg" value=""
        style="rounded=1;whiteSpace=wrap;html=1;fillColor=#e0e0e0;
               strokeColor=none;arcSize=40;"
        vertex="1" parent="1">
  <mxGeometry x="110" y="150" width="180" height="16" as="geometry"/>
</mxCell>

<!-- Progress bar fill (green, width = percentage * 180 / 100) -->
<mxCell id="progress-fill" value=""
        style="rounded=1;whiteSpace=wrap;html=1;fillColor=#82b366;
               strokeColor=none;arcSize=40;"
        vertex="1" parent="1">
  <mxGeometry x="110" y="150" width="104" height="16" as="geometry"/>
</mxCell>

Resource Utilization Heat Map

Map CPU/memory utilization to heat map colors for infrastructure diagrams:

def utilization_to_heatmap(percent):
    """Map utilization percentage to heat map color."""
    thresholds = [
        (95, "#67000d"),  # Dark red - critical
        (85, "#a50f15"),  # Red - danger
        (75, "#cb181d"),  # Medium red - high
        (60, "#ef3b2c"),  # Light red - elevated
        (45, "#fb6a4a"),  # Orange-red - moderate
        (30, "#fc9272"),  # Orange - normal
        (15, "#fcbba1"),  # Light orange - low
        (0,  "#fee0d2"),  # Very light - idle
    ]
    for threshold, color in thresholds:
        if percent >= threshold:
            return color
    return "#fff5f0"  # Near-white for 0%

<!-- Node with 87% CPU: red heat map color -->
<UserObject label="%hostname%&#xa;CPU: %cpu%%  MEM: %memory%%"
            hostname="worker-3"
            cpu="87"
            memory="62"
            placeholders="1"
            id="node-worker-3">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#a50f15;
                 fontColor=#ffffff;strokeColor=#67000d;fontSize=11;
                 fontStyle=1;"
          vertex="1" parent="1">
    <mxGeometry x="100" y="100" width="160" height="60" as="geometry"/>
  </mxCell>
</UserObject>

---

Data Sources

Jira Issue Status

Fetch Jira issue status and map to diagram cell formatting:

#!/usr/bin/env bash
# fetch-jira-status.sh - Update diagram cells with Jira issue statuses
# Usage: ./fetch-jira-status.sh <drawio_file> <jira_base_url>

DRAWIO_FILE="$1"
JIRA_URL="$2"
JIRA_TOKEN="${JIRA_API_TOKEN}"

# Extract all cells with a jira_key attribute
python3 << 'PYEOF'
import xml.etree.ElementTree as ET
import json
import subprocess
import sys
import os

drawio_file = sys.argv[1]
jira_url = sys.argv[2]
jira_token = os.environ.get("JIRA_API_TOKEN", "")

tree = ET.parse(drawio_file)
root = tree.getroot()

for obj in root.iter("UserObject"):
    jira_key = obj.get("jira_key")
    if not jira_key:
        continue

    # Fetch issue status from Jira API
    result = subprocess.run(
        ["curl", "-s", "-H", f"Authorization: Bearer {jira_token}",
         "-H", "Content-Type: application/json",
         f"{jira_url}/rest/api/3/issue/{jira_key}?fields=status,assignee,priority"],
        capture_output=True, text=True
    )

    if result.returncode == 0:
        issue = json.loads(result.stdout)
        status = issue["fields"]["status"]["name"].lower()
        assignee = issue["fields"].get("assignee", {})
        assignee_name = assignee.get("displayName", "Unassigned") if assignee else "Unassigned"

        # Update cell attributes
        obj.set("jira_status", status)
        obj.set("assignee", assignee_name)

        # Map Jira status to visual status
        status_map = {
            "to do": "unknown",
            "in progress": "deploying",
            "in review": "warning",
            "done": "healthy",
            "blocked": "critical",
        }
        obj.set("status", status_map.get(status, "unknown"))

tree.write(drawio_file, xml_declaration=True, encoding="UTF-8")
PYEOF

GitHub Actions Workflow Status

#!/usr/bin/env bash
# fetch-github-actions.sh - Update diagram with GitHub Actions workflow statuses
# Usage: ./fetch-github-actions.sh <drawio_file> <owner/repo>

DRAWIO_FILE="$1"
REPO="$2"
GH_TOKEN="${GITHUB_TOKEN}"

python3 << 'PYEOF'
import xml.etree.ElementTree as ET
import json
import subprocess
import sys
import os

drawio_file = sys.argv[1]
repo = sys.argv[2]
gh_token = os.environ.get("GITHUB_TOKEN", "")

tree = ET.parse(drawio_file)
root = tree.getroot()

for obj in root.iter("UserObject"):
    workflow = obj.get("github_workflow")
    if not workflow:
        continue

    # Fetch latest workflow run
    result = subprocess.run(
        ["curl", "-s",
         "-H", f"Authorization: Bearer {gh_token}",
         "-H", "Accept: application/vnd.github+json",
         f"https://api.github.com/repos/{repo}/actions/workflows/{workflow}/runs?per_page=1"],
        capture_output=True, text=True
    )

    if result.returncode == 0:
        data = json.loads(result.stdout)
        runs = data.get("workflow_runs", [])
        if runs:
            run = runs[0]
            conclusion = run.get("conclusion", "pending")
            status_map = {
                "success": "healthy",
                "failure": "critical",
                "cancelled": "warning",
                "in_progress": "deploying",
                "pending": "deploying",
                None: "deploying",
            }
            obj.set("status", status_map.get(conclusion, "unknown"))
            obj.set("ci_run_url", run.get("html_url", ""))
            obj.set("ci_conclusion", conclusion or "running")
            obj.set("ci_updated", run.get("updated_at", ""))

tree.write(drawio_file, xml_declaration=True, encoding="UTF-8")
PYEOF

Kubernetes Pod Health

#!/usr/bin/env bash
# fetch-k8s-status.sh - Update diagram cells with K8s pod status
# Usage: ./fetch-k8s-status.sh <drawio_file> [namespace]

DRAWIO_FILE="$1"
NAMESPACE="${2:-default}"

python3 << 'PYEOF'
import xml.etree.ElementTree as ET
import json
import subprocess
import sys

drawio_file = sys.argv[1]
namespace = sys.argv[2] if len(sys.argv) > 2 else "default"

# Get pod status from kubectl
result = subprocess.run(
    ["kubectl", "get", "pods", "-n", namespace, "-o", "json"],
    capture_output=True, text=True
)

if result.returncode != 0:
    print(f"Error fetching pods: {result.stderr}", file=sys.stderr)
    sys.exit(1)

pods_data = json.loads(result.stdout)
pod_status = {}
for pod in pods_data.get("items", []):
    name = pod["metadata"]["name"]
    # Derive the deployment/service name from the pod name
    # Convention: deployment-name-hash-hash
    parts = name.rsplit("-", 2)
    deploy_name = parts[0] if len(parts) >= 3 else name

    phase = pod["status"].get("phase", "Unknown")
    ready_conditions = [c for c in pod["status"].get("conditions", [])
                       if c["type"] == "Ready"]
    is_ready = ready_conditions[0]["status"] == "True" if ready_conditions else False

    if deploy_name not in pod_status:
        pod_status[deploy_name] = {"total": 0, "ready": 0, "phase": phase}
    pod_status[deploy_name]["total"] += 1
    if is_ready:
        pod_status[deploy_name]["ready"] += 1

tree = ET.parse(drawio_file)
root = tree.getroot()

for obj in root.iter("UserObject"):
    k8s_deploy = obj.get("k8s_deployment")
    if not k8s_deploy or k8s_deploy not in pod_status:
        continue

    info = pod_status[k8s_deploy]
    obj.set("pod_count", f"{info['ready']}/{info['total']}")
    obj.set("k8s_phase", info["phase"])

    # Determine status
    if info["ready"] == info["total"] and info["total"] > 0:
        obj.set("status", "healthy")
    elif info["ready"] > 0:
        obj.set("status", "degraded")
    elif info["total"] > 0:
        obj.set("status", "critical")
    else:
        obj.set("status", "unknown")

tree.write(drawio_file, xml_declaration=True, encoding="UTF-8")
PYEOF

Prometheus / Grafana Metrics

#!/usr/bin/env bash
# fetch-prometheus-metrics.sh - Update diagram with Prometheus metric values
# Usage: ./fetch-prometheus-metrics.sh <drawio_file> <prometheus_url>

DRAWIO_FILE="$1"
PROM_URL="$2"

python3 << 'PYEOF'
import xml.etree.ElementTree as ET
import json
import subprocess
import sys
import urllib.parse

drawio_file = sys.argv[1]
prom_url = sys.argv[2].rstrip("/")

tree = ET.parse(drawio_file)
root = tree.getroot()

for obj in root.iter("UserObject"):
    prom_query = obj.get("prom_query")
    if not prom_query:
        continue

    # Query Prometheus instant API
    encoded_query = urllib.parse.quote(prom_query)
    result = subprocess.run(
        ["curl", "-s", f"{prom_url}/api/v1/query?query={encoded_query}"],
        capture_output=True, text=True
    )

    if result.returncode == 0:
        data = json.loads(result.stdout)
        results = data.get("data", {}).get("result", [])
        if results:
            value = float(results[0]["value"][1])
            metric_name = obj.get("metric_name", "metric")
            obj.set(metric_name, f"{value:.1f}")

            # Apply threshold-based formatting
            warn_threshold = float(obj.get("warn_threshold", "70"))
            crit_threshold = float(obj.get("crit_threshold", "90"))

            if value >= crit_threshold:
                obj.set("status", "critical")
            elif value >= warn_threshold:
                obj.set("status", "warning")
            else:
                obj.set("status", "healthy")

tree.write(drawio_file, xml_declaration=True, encoding="UTF-8")
PYEOF

Azure DevOps Pipeline Status

#!/usr/bin/env bash
# fetch-azdo-pipeline.sh - Update diagram with Azure DevOps pipeline status
# Usage: ./fetch-azdo-pipeline.sh <drawio_file> <org> <project>

DRAWIO_FILE="$1"
ORG="$2"
PROJECT="$3"
AZDO_TOKEN="${AZDO_PAT}"

python3 << 'PYEOF'
import xml.etree.ElementTree as ET
import json
import subprocess
import sys
import os
import base64

drawio_file = sys.argv[1]
org = sys.argv[2]
project = sys.argv[3]
pat = os.environ.get("AZDO_PAT", "")
auth = base64.b64encode(f":{pat}".encode()).decode()

tree = ET.parse(drawio_file)
root = tree.getroot()

for obj in root.iter("UserObject"):
    pipeline_id = obj.get("azdo_pipeline_id")
    if not pipeline_id:
        continue

    result = subprocess.run(
        ["curl", "-s",
         "-H", f"Authorization: Basic {auth}",
         f"https://dev.azure.com/{org}/{project}/_apis/pipelines/{pipeline_id}/runs?$top=1&api-version=7.0"],
        capture_output=True, text=True
    )

    if result.returncode == 0:
        data = json.loads(result.stdout)
        runs = data.get("value", [])
        if runs:
            run = runs[0]
            result_val = run.get("result", "unknown")
            state = run.get("state", "unknown")

            status_map = {
                "succeeded": "healthy",
                "failed": "critical",
                "canceled": "warning",
                "inProgress": "deploying",
            }
            obj.set("status", status_map.get(result_val, status_map.get(state, "unknown")))
            obj.set("pipeline_run_id", str(run.get("id", "")))
            obj.set("pipeline_result", result_val)

tree.write(drawio_file, xml_declaration=True, encoding="UTF-8")
PYEOF

Custom REST API Endpoints

Generic data binding from any REST API:

<!-- Cell with custom API binding configuration -->
<UserObject label="%service_name%&#xa;%metric_label%: %metric_value%"
            service_name="Order Processor"
            api_url="https://api.internal.example.com/health/order-processor"
            api_method="GET"
            api_headers='{"Authorization":"Bearer ${API_TOKEN}"}'
            api_jq_status=".status"
            api_jq_metric=".metrics.orders_per_minute"
            metric_label="Orders/min"
            metric_value="--"
            status="unknown"
            placeholders="1"
            id="svc-orders">
  <mxCell style="rounded=1;whiteSpace=wrap;html=1;fontSize=11;"
          vertex="1" parent="1">
    <mxGeometry x="100" y="100" width="180" height="60" as="geometry"/>
  </mxCell>
</UserObject>

#!/usr/bin/env python3
"""Generic REST API data binder for draw.io diagrams."""

import xml.etree.ElementTree as ET
import json
import subprocess
import sys
import os
import re

def fetch_api_data(url, method="GET", headers=None):
    """Fetch data from a REST API endpoint."""
    cmd = ["curl", "-s", "-X", method]
    if headers:
        for key, value in headers.items():
            # Expand environment variables in header values
            expanded = os.path.expandvars(value)
            cmd.extend(["-H", f"{key}: {expanded}"])
    cmd.append(url)

    result = subprocess.run(cmd, capture_output=True, text=True, timeout=10)
    if result.returncode == 0:
        return json.loads(result.stdout)
    return None

def extract_jq(data, jq_path):
    """Simple jq-like path extraction (supports .field.subfield syntax)."""
    parts = jq_path.lstrip(".").split(".")
    current = data
    for part in parts:
        if isinstance(current, dict) and part in current:
            current = current[part]
        else:
            return None
    return current

def bind_api_data(drawio_path):
    tree = ET.parse(drawio_path)
    root = tree.getroot()
    updated = 0

    for obj in root.iter("UserObject"):
        api_url = obj.get("api_url")
        if not api_url:
            continue

        method = obj.get("api_method", "GET")
        headers_str = obj.get("api_headers", "{}")
        try:
            headers = json.loads(headers_str)
        except json.JSONDecodeError:
            headers = {}

        data = fetch_api_data(api_url, method, headers)
        if data is None:
            obj.set("status", "unknown")
            continue

        # Extract and set all api_jq_* attributes
        for attr_name in list(obj.keys()):
            if attr_name.startswith("api_jq_"):
                target_attr = attr_name[7:]  # Remove "api_jq_" prefix
                jq_path = obj.get(attr_name)
                value = extract_jq(data, jq_path)
                if value is not None:
                    obj.set(target_attr, str(value))
        updated += 1

    tree.write(drawio_path, xml_declaration=True, encoding="UTF-8")
    print(f"Updated {updated} API-bound cells")

if __name__ == "__main__":
    bind_api_data(sys.argv[1])

---

Update Workflow

Manual Update

Run the data-bind command to refresh all bound cells:

# Update all data bindings in a diagram
/drawio:data-bind refresh architecture.drawio

# Update only specific data sources
/drawio:data-bind refresh architecture.drawio --source=k8s
/drawio:data-bind refresh architecture.drawio --source=jira
/drawio:data-bind refresh architecture.drawio --source=github

Automated Update via CI/CD

Add a workflow step to update diagrams on schedule or on deployment:

# .github/workflows/update-diagrams.yml
name: Update Architecture Diagrams
on:
  schedule:
    - cron: '*/15 * * * *'  # Every 15 minutes
  workflow_dispatch:

jobs:
  update:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Update diagram data bindings
        env:
          JIRA_API_TOKEN: ${{ secrets.JIRA_API_TOKEN }}
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PROM_URL: ${{ secrets.PROMETHEUS_URL }}
        run: |
          python3 scripts/update-diagram-bindings.py docs/architecture.drawio
      - name: Commit updated diagrams
        run: |
          git config user.name "diagram-bot"
          git config user.email "[email protected]"
          git add docs/architecture.drawio
          git diff --staged --quiet || git commit -m "chore(diagrams): auto-update data bindings"
          git push

Webhook-Triggered Updates

Configure webhook endpoints that trigger diagram updates when events occur:

#!/usr/bin/env python3
"""Webhook handler for diagram auto-refresh."""

from http.server import HTTPServer, BaseHTTPRequestHandler
import json
import subprocess

class DiagramWebhookHandler(BaseHTTPRequestHandler):
    def do_POST(self):
        content_length = int(self.headers.get("Content-Length", 0))
        body = self.rfile.read(content_length)
        event = json.loads(body)

        diagram_file = "docs/architecture.drawio"

        if self.path == "/webhook/k8s":
            subprocess.run(["python3", "scripts/fetch-k8s-status.sh", diagram_file])
        elif self.path == "/webhook/github":
            subprocess.run(["python3", "scripts/fetch-github-actions.sh", diagram_file])
        elif self.path == "/webhook/jira":
            subprocess.run(["python3", "scripts/fetch-jira-status.sh", diagram_file])

        self.send_response(200)
        self.end_headers()
        self.wfile.write(b'{"status":"updated"}')

if __name__ == "__main__":
    server = HTTPServer(("0.0.0.0", 8090), DiagramWebhookHandler)
    print("Diagram webhook listener on :8090")
    server.serve_forever()

---

Status Badge Generation

Generate SVG badges from diagram data for use in READMEs and dashboards:

#!/usr/bin/env python3
"""Generate SVG status badges from draw.io diagram data."""

import xml.etree.ElementTree as ET
import sys

BADGE_TEMPLATE = '''<svg xmlns="http://www.w3.org/2000/svg" width="{width}" height="20">
  <linearGradient id="b" x2="0" y2="100%">
    <stop offset="0" stop-color="#bbb" stop-opacity=".1"/>
    <stop offset="1" stop-opacity=".1"/>
  </linearGradient>
  <clipPath id="a"><rect width="{width}" height="20" rx="3" fill="#fff"/></clipPath>
  <g clip-path="url(#a)">
    <rect width="{label_width}" height="20" fill="#555"/>
    <rect x="{label_width}" width="{value_width}" height="20" fill="{color}"/>
    <rect width="{width}" height="20" fill="url(#b)"/>
  </g>
  <g fill="#fff" text-anchor="middle" font-family="DejaVu Sans,Verdana,sans-serif" font-size="11">
    <text x="{label_x}" y="15" fill="#010101" fill-opacity=".3">{label}</text>
    <text x="{label_x}" y="14">{label}</text>
    <text x="{value_x}" y="15" fill="#010101" fill-opacity=".3">{value}</text>
    <text x="{value_x}" y="14">{value}</text>
  </g>
</svg>'''

STATUS_COLORS = {
    "healthy": "#4c1",
    "running": "#4c1",
    "warning": "#dfb317",
    "degraded": "#dfb317",
    "critical": "#e05d44",
    "down": "#e05d44",
    "unknown": "#9f9f9f",
    "maintenance": "#007ec6",
    "deploying": "#007ec6",
}

def generate_badge(label, value, status):
    color = STATUS_COLORS.get(status, "#9f9f9f")
    label_width = len(label) * 7 + 10
    value_width = len(value) * 7 + 10
    width = label_width + value_width

    return BADGE_TEMPLATE.format(
        width=width, label_width=label_width, value_width=value_width,
        label_x=label_width / 2, value_x=label_width + value_width / 2,
        label=label, value=value, color=color
    )

def generate_badges_from_diagram(drawio_path, output_dir):
    tree = ET.parse(drawio_path)
    root = tree.getroot()

    for obj in root.iter("UserObject"):
        badge_label = obj.get("badge_label")
        if not badge_label:
            continue

        name = obj.get("name", obj.get("label", "unknown"))
        status = obj.get("status", "unknown")
        badge_value = obj.get("badge_value", status)
        cell_id = obj.get("id", "unknown")

        svg = generate_badge(badge_label, badge_value, status)
        output_path = f"{output_dir}/{cell_id}.svg"
        with open(output_path, "w") as f:
            f.write(svg)
        print(f"Generated badge: {output_path}")

if __name__ == "__main__":
    generate_badges_from_diagram(sys.argv[1], sys.argv[2] if len(sys.argv) > 2 else ".")

---

Complete Data-Bound Diagram Example

A full architecture diagram with multiple data sources bound:

<mxfile host="app.diagrams.net" type="device"
        vars='{"environment":"production","region":"us-east-1","updated":"2026-03-14T10:30:00Z"}'>
  <diagram id="arch" name="Production Architecture">
    <mxGraphModel dx="1422" dy="762" grid="1" gridSize="10" guides="1"
                  tooltips="1" connect="1" arrows="1" fold="1" page="1"
                  pageScale="1" pageWidth="1169" pageHeight="827">
      <root>
        <mxCell id="0"/>
        <mxCell id="1" parent="0"/>

        <!-- Info panel with file-level variables -->
        <UserObject label="Env: %environment% | Region: %region%&#xa;Last updated: %updated%"
                    placeholders="1" id="info">
          <mxCell style="text;html=1;fillColor=#f5f5f5;strokeColor=#666;
                         rounded=1;fontSize=10;align=left;spacingLeft=6;"
                  vertex="1" parent="1">
            <mxGeometry x="20" y="20" width="280" height="40" as="geometry"/>
          </mxCell>
        </UserObject>

        <!-- API Gateway - bound to K8s and GitHub Actions -->
        <UserObject label="&lt;b&gt;%name%&lt;/b&gt;&#xa;%pod_count% pods | %status%"
                    name="API Gateway"
                    status="healthy"
                    k8s_deployment="api-gateway"
                    github_workflow="deploy-api.yml"
                    pod_count="3/3"
                    badge_label="api-gateway"
                    badge_value="healthy"
                    placeholders="1"
                    id="svc-api">
          <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#d5e8d4;
                         strokeColor=#82b366;fontSize=11;fontStyle=0;shadow=1;"
                  vertex="1" parent="1">
            <mxGeometry x="400" y="100" width="200" height="70" as="geometry"/>
          </mxCell>
        </UserObject>

        <!-- Auth Service - bound to Jira and Prometheus -->
        <UserObject label="&lt;b&gt;%name%&lt;/b&gt;&#xa;Latency: %latency%ms | %status%"
                    name="Auth Service"
                    status="warning"
                    jira_key="AUTH-142"
                    prom_query="histogram_quantile(0.99, rate(http_request_duration_seconds_bucket{service='auth'}[5m]))"
                    metric_name="latency"
                    latency="340"
                    warn_threshold="200"
                    crit_threshold="1000"
                    placeholders="1"
                    id="svc-auth">
          <mxCell style="rounded=1;whiteSpace=wrap;html=1;fillColor=#fff2cc;
                         strokeColor=#d6b656;fontSize=11;fontStyle=0;shadow=1;"
                  vertex="1" parent="1">
            <mxGeometry x="200" y="250" width="200" height="70" as="geometry"/>
          </mxCell>
        </UserObject>

        <!-- Database - bound to custom health API -->
        <UserObject label="&lt;b&gt;%name%&lt;/b&gt;&#xa;Connections: %connections%/%max_connections%"
                    name="PostgreSQL Primary"
                    status="healthy"
                    api_url="https://db-monitor.internal/health/pg-primary"
                    api_jq_status=".status"
                    api_jq_connections=".metrics.active_connections"
                    api_jq_max_connections=".config.max_connections"
                    connections="42"
                    max_connections="200"
                    placeholders="1"
                    id="db-primary">
          <mxCell style="shape=cylinder3;whiteSpace=wrap;html=1;
                         boundedLbl=1;backgroundOutline=1;size=15;
                         fillColor=#d5e8d4;strokeColor=#82b366;
                         fontSize=11;fontStyle=0;"
                  vertex="1" parent="1">
            <mxGeometry x="600" y="240" width="160" height="90" as="geometry"/>
          </mxCell>
        </UserObject>

        <!-- Connections -->
        <mxCell style="edgeStyle=orthogonalEdgeStyle;rounded=1;strokeWidth=2;
                       endArrow=block;endFill=1;strokeColor=#666;"
                edge="1" source="svc-api" target="svc-auth" parent="1">
          <mxGeometry relative="1" as="geometry"/>
        </mxCell>
        <mxCell style="edgeStyle=orthogonalEdgeStyle;rounded=1;strokeWidth=2;
                       endArrow=block;endFill=1;strokeColor=#666;"
                edge="1" source="svc-auth" target="db-primary" parent="1">
          <mxGeometry relative="1" as="geometry"/>
        </mxCell>
      </root>
    </mxGraphModel>
  </diagram>
</mxfile>

---

Usage Examples

# Bind K8s pod status to all cells with k8s_deployment attribute
/drawio:data-bind --source=k8s --namespace=production architecture.drawio

# Bind Jira issue statuses
/drawio:data-bind --source=jira --url=https://myorg.atlassian.net architecture.drawio

# Bind GitHub Actions workflow results
/drawio:data-bind --source=github --repo=myorg/myrepo architecture.drawio

# Bind Prometheus metrics
/drawio:data-bind --source=prometheus --url=http://prometheus:9090 architecture.drawio

# Bind all configured sources and apply conditional formatting
/drawio:data-bind refresh architecture.drawio

# Generate status badges from bound data
/drawio:data-bind badges architecture.drawio --output=docs/badges/

# Set up webhook listener for auto-refresh
/drawio:data-bind webhook --port=8090 architecture.drawio