feat(server/metrics): add documentation around the new metrics endpoint

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perf3ct 2025-05-26 13:51:03 -07:00
parent 3479f5016d
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7 changed files with 287 additions and 202 deletions

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@ -275,9 +275,9 @@
content via the injected <code>now</code> and <code>parentNote</code> variables.</p>
<p>Examples:</p>
<ul>
<li><code>${parentNote.getLabel('authorName')}'s literary works</code>
<li><code><span class="math-tex">\({parentNote.getLabel('authorName')}'s literary works</span></code>
</li>
<li><code>Log for ${now.format('YYYY-MM-DD HH:mm:ss')}</code>
<li><code>Log for \){now.format('YYYY-MM-DD HH:mm:ss')}</code>
</li>
<li>to mirror the parent's template.</li>
</ul>

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@ -0,0 +1,88 @@
<p>&nbsp;</p>
<h1><strong>Trilium Metrics API</strong></h1>
<p>The Trilium metrics API provides comprehensive monitoring data about your
Trilium instance, designed for external monitoring systems like Prometheus.</p>
<h2><strong>Endpoint</strong></h2>
<ul>
<li><strong>URL</strong>: <code>/etapi/metrics</code>
</li>
<li><strong>Method</strong>: <code>GET</code>
</li>
<li><strong>Authentication</strong>: ETAPI token required</li>
<li><strong>Default Format</strong>: Prometheus text format</li>
</ul>
<h2><strong>Authentication</strong></h2>
<p>You need an ETAPI token to access the metrics endpoint. Get one by:</p><pre><code class="language-text-x-trilium-auto"># Get an ETAPI token
curl -X POST http://localhost:8080/etapi/auth/login \
-H "Content-Type: application/json" \
-d '{"password": "your_password"}'
</code></pre>
<h2><strong>Usage</strong></h2>
<h3><strong>Prometheus Format (Default)</strong></h3><pre><code class="language-text-x-trilium-auto">curl -H "Authorization: YOUR_ETAPI_TOKEN" \
http://localhost:8080/etapi/metrics
</code></pre>
<p>Returns metrics in Prometheus text format:</p><pre><code class="language-text-x-trilium-auto"># HELP trilium_info Trilium instance information
# TYPE trilium_info gauge
trilium_info{version="0.91.6",db_version="231",node_version="v18.17.0"} 1 1701432000
# HELP trilium_notes_total Total number of notes including deleted
# TYPE trilium_notes_total gauge
trilium_notes_total 1234 1701432000
</code></pre>
<h3><strong>JSON Format</strong></h3><pre><code class="language-text-x-trilium-auto">curl -H "Authorization: YOUR_ETAPI_TOKEN" \
"http://localhost:8080/etapi/metrics?format=json"
</code></pre>
<p>Returns detailed metrics in JSON format for debugging or custom integrations.</p>
<h2><strong>Available Metrics</strong></h2>
<h3><strong>Instance Information</strong></h3>
<ul>
<li><code>trilium_info</code> - Version and build information with labels</li>
</ul>
<h3><strong>Database Metrics</strong></h3>
<ul>
<li><code>trilium_notes_total</code> - Total notes (including deleted)</li>
<li><code>trilium_notes_deleted</code> - Number of deleted notes</li>
<li><code>trilium_notes_active</code> - Number of active notes</li>
<li><code>trilium_notes_protected</code> - Number of protected notes</li>
<li><code>trilium_attachments_total</code> - Total attachments</li>
<li><code>trilium_attachments_active</code> - Active attachments</li>
<li><code>trilium_revisions_total</code> - Total note revisions</li>
<li><code>trilium_branches_total</code> - Active branches</li>
<li><code>trilium_attributes_total</code> - Active attributes</li>
<li><code>trilium_blobs_total</code> - Total blob records</li>
<li><code>trilium_etapi_tokens_total</code> - Active ETAPI tokens</li>
<li><code>trilium_embeddings_total</code> - Note embeddings (if available)</li>
</ul>
<h3><strong>Categorized Metrics</strong></h3>
<ul>
<li><code>trilium_notes_by_type{type="text|code|image|file"}</code> - Notes
by type</li>
<li><code>trilium_attachments_by_type{mime_type="..."}</code> - Attachments
by MIME type</li>
</ul>
<h3><strong>Statistics</strong></h3>
<ul>
<li><code>trilium_database_size_bytes</code> - Database size in bytes</li>
<li><code>trilium_oldest_note_timestamp</code> - Timestamp of oldest note</li>
<li><code>trilium_newest_note_timestamp</code> - Timestamp of newest note</li>
<li><code>trilium_last_modified_timestamp</code> - Last modification timestamp</li>
</ul>
<h2><strong>Prometheus Configuration</strong></h2>
<p>Add to your <code>prometheus.yml</code>:</p><pre><code class="language-text-x-trilium-auto">scrape_configs:
- job_name: 'trilium'
static_configs:
- targets: ['localhost:8080']
metrics_path: '/etapi/metrics'
headers:
Authorization: 'YOUR_ETAPI_TOKEN'
scrape_interval: 30s
</code></pre>
<h2><strong>Error Responses</strong></h2>
<ul>
<li><code>400</code> - Invalid format parameter</li>
<li><code>401</code> - Missing or invalid ETAPI token</li>
<li><code>500</code> - Internal server error</li>
</ul>
<p>&nbsp;</p>
<p>&nbsp;</p>
<p>&nbsp;</p>

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@ -0,0 +1,110 @@
# **Trilium Metrics API**
The Trilium metrics API provides comprehensive monitoring data about your Trilium instance, designed for external monitoring systems like Prometheus.
## **Endpoint**
* **URL**: `/etapi/metrics`
* **Method**: `GET`
* **Authentication**: ETAPI token required
* **Default Format**: Prometheus text format
## **Authentication**
You need an ETAPI token to access the metrics endpoint. Get one by:
```
# Get an ETAPI token
curl -X POST http://localhost:8080/etapi/auth/login \
-H "Content-Type: application/json" \
-d '{"password": "your_password"}'
```
## **Usage**
### **Prometheus Format (Default)**
```
curl -H "Authorization: YOUR_ETAPI_TOKEN" \
http://localhost:8080/etapi/metrics
```
Returns metrics in Prometheus text format:
```
# HELP trilium_info Trilium instance information
# TYPE trilium_info gauge
trilium_info{version="0.91.6",db_version="231",node_version="v18.17.0"} 1 1701432000
# HELP trilium_notes_total Total number of notes including deleted
# TYPE trilium_notes_total gauge
trilium_notes_total 1234 1701432000
```
### **JSON Format**
```
curl -H "Authorization: YOUR_ETAPI_TOKEN" \
"http://localhost:8080/etapi/metrics?format=json"
```
Returns detailed metrics in JSON format for debugging or custom integrations.
## **Available Metrics**
### **Instance Information**
* `trilium_info` - Version and build information with labels
### **Database Metrics**
* `trilium_notes_total` - Total notes (including deleted)
* `trilium_notes_deleted` - Number of deleted notes
* `trilium_notes_active` - Number of active notes
* `trilium_notes_protected` - Number of protected notes
* `trilium_attachments_total` - Total attachments
* `trilium_attachments_active` - Active attachments
* `trilium_revisions_total` - Total note revisions
* `trilium_branches_total` - Active branches
* `trilium_attributes_total` - Active attributes
* `trilium_blobs_total` - Total blob records
* `trilium_etapi_tokens_total` - Active ETAPI tokens
* `trilium_embeddings_total` - Note embeddings (if available)
### **Categorized Metrics**
* `trilium_notes_by_type{type="text|code|image|file"}` - Notes by type
* `trilium_attachments_by_type{mime_type="..."}` - Attachments by MIME type
### **Statistics**
* `trilium_database_size_bytes` - Database size in bytes
* `trilium_oldest_note_timestamp` - Timestamp of oldest note
* `trilium_newest_note_timestamp` - Timestamp of newest note
* `trilium_last_modified_timestamp` - Last modification timestamp
## **Prometheus Configuration**
Add to your `prometheus.yml`:
```
scrape_configs:
- job_name: 'trilium'
static_configs:
- targets: ['localhost:8080']
metrics_path: '/etapi/metrics'
headers:
Authorization: 'YOUR_ETAPI_TOKEN'
scrape_interval: 30s
```
## **Error Responses**
* `400` - Invalid format parameter
* `401` - Missing or invalid ETAPI token
* `500` - Internal server error