Flesh out basic structure of the program, finish initial extension docs

docs/extensions/alerts.md

@@ -0,0 +1,39 @@
+# Alerts Extensions
+
+Updog doesn't do any monitoring by itself. Instead, extensions are used to check the status of whatever thing, send alerts, and log stuff. Updog just chains them together.
+
+Example extension: [askiiart/updog-alerts_template](https://git.askiiart.net/askiiart/updog-alerts_template)
+
+## Folder layout
+
+Extensions need to be put in the `./extensions/alerts` folder, and the name of the file must match the name of the folder.
+
+```txt
+.
+├── extensions
+│   ├── alerts
+│       └── alerts_template
+│           └── alerts_template.py
+```
+
+## Methods
+
+`*`: indicates a method is required
+
+### `__init__()`*
+
+**Arguments**:
+
+- (dict) Arguments from `alerts-args` in `services.json` - For no arguments, an empty dict will be used
+
+**Return**: None
+
+### `alert()`*
+
+**Arguments**:
+
+- (str) The name of the service the alert is for
+- (int) The status code returned by the checker
+- (str) The status message for that status code
+
+**Return**: Nothing

docs/extensions/checkers.md

@@ -11,9 +11,9 @@ Extensions need to be put in the `./extensions/checkers` folder, and the name of
 ```txt
 .
 ├── extensions
-│   ├── alerts
-│       └── alerts_template
-│           └── alerts_template.py
+│   ├── checkers
+│       └── checker_template
+│           └── checker_template.py
 ```
 
 ## Methods
@@ -24,7 +24,7 @@ Extensions need to be put in the `./extensions/checkers` folder, and the name of
 
 **Arguments**:
 
-- A dict of arguments from `checker-args` in `services.json` - For no arguments, an empty dict will be used
+- (dict) Arguments from `checker-args` in `services.json` - For no arguments, an empty dict will be used
 
 Example:
 

docs/extensions/logging.md

@@ -0,0 +1,39 @@
+# Alerts Extensions
+
+Updog doesn't do any monitoring by itself. Instead, extensions are used to check the status of whatever thing, send alerts, and log stuff. Updog just chains them together.
+
+Example extension: [askiiart/updog-logging_template](https://git.askiiart.net/askiiart/updog-logging_template)
+
+## Folder layout
+
+Extensions need to be put in the `./extensions/logging` folder, and the name of the file must match the name of the folder.
+
+```txt
+.
+├── extensions
+│   ├── logging
+│       └── logging_template
+│           └── logging_template.py
+```
+
+## Methods
+
+`*`: indicates a method is required
+
+### `__init__()`*
+
+**Arguments**:
+
+- A dict of arguments from `logging-args` in `services.json` - For no arguments, an empty dict will be used
+
+**Return**: None
+
+### `log()`*
+
+**Arguments**: `service_name`, `code`, `status`
+
+- `service_name`: The name of the service the logger is logging - currently it's always the same value for a single instance, but this is required for compatibility when support for logging multiple things with one instance of the logger is supported.
+- `code`: The status code returned by the checker
+- `status`: The status message for that status code
+
+**Return**: Nothing