nginx service

[djthorpe]

Implement an nginx service tasks:

• [x] Start, stop, reload and test configuration
• [x] Create new configurations, update, enable , disable and delete them
• [x] Command-line client for control of nginx
• [ ] Add a client which can be used for client-side control
• [x] Permissions on the TEMP directory need to be 755 rather than 700
• [x] Permissions on any socket directory need to reflect User and Group in httpserver
• [x] Add scopes for nginx for permissions
• [ ] Add data (for sockets/pid) and log paths
• [ ] Use a mutex lock to guard against concurrency in various places
• [ ] Add "readonly" property to Template so that it cannot be disabled, enabled, changed or deleted
• [ ] Add template variables for rending a configuration from a text/template
• [ ] Allow PATCH method to write body of enabled configuration
• [ ] Log rotation
• [ ] Check remaining TODO's

The repository link is: https://github.com/mutablelogic/go-server/tree/v4/pkg/handler/nginx

[djthorpe]

Additional methods:

• [ ] Available() []File - returns available configs as a set of unqiue strings (note we should also provide the state - so enabled or disabled)
• [ ] Enable(keyword string,vars ....any) error - enable a configuration through a template, returns error if test was not successful
• [ ] Disable(keyword string) error - disable a configuration
• [ ] Add(keyword string,data []byte) error - add a configuration (does not enable it)
• [ ] Delete(keyword string) error - delete a configuration, disables it if enabled

[djthorpe]

PR's #40 #39