document the proxy example

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Kenneth Bingham 2025-01-29 03:41:40 -05:00
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# zrok Python Proxy Example
This demonstrates using the ProxyShare class to forward requests from the public frontend to a target URL.
## Run the Example
```bash
LOG_LEVEL=INFO python ./proxy.py http://127.0.0.1:3000
```
Expected output:
```txt
2025-01-29 06:37:00,884 - __main__ - INFO - === Starting proxy server ===
2025-01-29 06:37:00,884 - __main__ - INFO - Target URL: http://127.0.0.1:3000
2025-01-29 06:37:01,252 - __main__ - INFO - Access proxy at: https://24x0pq7s6jr0.zrok.example.com:443
2025-01-29 06:37:07,981 - zrok.proxy - INFO - Share 24x0pq7s6jr0 released
```
## Basic Usage
```python
from zrok.proxy import ProxyShare
import zrok
# Load the environment
root = zrok.environment.root.Load()
# Create a temporary proxy share (will be cleaned up on exit)
proxy = ProxyShare.create(root=root, target="http://my-target-service")
# Access the proxy's endpoints and token
print(f"Access proxy at: {proxy.endpoints}")
proxy.run()
```
## Creating a Reserved Proxy Share
To create a share token that persists and can be reused, run the example `proxy.py --unique-name my-persistent-proxy`. If the unique name already exists it will be reused. Here's how it works:
```python
proxy = ProxyShare.create(
root=root,
target="http://127.0.0.1:3000",
unique_name="my-persistent-proxy"
)
```

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# Zrok Python SDK
## Proxy Facility
The SDK includes a proxy facility that makes it easy to create and manage proxy shares. This is particularly useful when you need to:
1. Create an HTTP proxy with zrok
2. Optionally reserve the proxy with a unique name for persistence
3. Automatically handle cleanup of non-reserved shares
### Basic Usage
```python
from zrok.proxy import ProxyShare
import zrok
# Load the environment
root = zrok.environment.root.Load()
# Create a temporary proxy share (will be cleaned up on exit)
proxy = ProxyShare.create(root=root, target="http://my-target-service")
# Access the proxy's endpoints and token
print(f"Access proxy at: {proxy.endpoints}")
print(f"Share token: {proxy.token}")
```
### Creating a Reserved Proxy Share
To create a proxy share that persists and can be reused:
```python
# Create/retrieve a reserved proxy share with a unique name
proxy = ProxyShare.create(
root=root,
target="http://my-target-service",
unique_name="my-persistent-proxy"
)
```
When a `unique_name` is provided:
1. If the zrok environment already has a share with that name, it will be reused
2. If no share exists, a new reserved share will be created
3. The share will be automatically cleaned up on exit if no `unique_name` is provided
When a `unique_name` is not provided, the randomly generated share will be cleaned up on exit.