91 lines
1.9 KiB
Go
91 lines
1.9 KiB
Go
package aicra
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import (
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"fmt"
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"io"
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"os"
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"git.xdrm.io/go/aicra/datatype"
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"git.xdrm.io/go/aicra/internal/config"
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)
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// Server represents an AICRA instance featuring: type checkers, services
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type Server struct {
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config *config.Server
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handlers []*handler
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}
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// New creates a framework instance from a configuration file
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func New(configPath string, dtypes ...datatype.T) (*Server, error) {
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var (
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err error
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configFile io.ReadCloser
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)
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// 1. init instance
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var i = &Server{
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config: nil,
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handlers: make([]*handler, 0),
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}
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// 2. open config file
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configFile, err = os.Open(configPath)
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if err != nil {
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return nil, err
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}
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defer configFile.Close()
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// 3. load configuration
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i.config, err = config.Parse(configFile, dtypes...)
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if err != nil {
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return nil, err
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}
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return i, nil
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}
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// Handle sets a new handler for an HTTP method to a path
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func (s *Server) Handle(method, path string, fn interface{}) error {
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// find associated service
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var found *config.Service = nil
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for _, service := range s.config.Services {
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if method == service.Method && path == service.Pattern {
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found = service
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break
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}
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}
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if found == nil {
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return fmt.Errorf("%s '%s': %w", method, path, ErrNoServiceForHandler)
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}
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handler, err := createHandler(method, path, *found, fn)
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if err != nil {
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return err
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}
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s.handlers = append(s.handlers, handler)
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return nil
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}
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// ToHTTPServer converts the server to a http server
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func (s Server) ToHTTPServer() (*httpServer, error) {
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// check if handlers are missing
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for _, service := range s.config.Services {
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found := false
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for _, handler := range s.handlers {
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if handler.Method == service.Method && handler.Path == service.Pattern {
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found = true
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break
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}
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}
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if !found {
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return nil, fmt.Errorf("%s '%s': %w", service.Method, service.Pattern, ErrNoHandlerForService)
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}
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}
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// 2. cast to http server
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httpServer := httpServer(s)
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return &httpServer, nil
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}
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