github.com/livermorium/go-swagger@v0.19.0/scan/routes.go (about)

     1  // Copyright 2015 go-swagger maintainers
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //    http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package scan
    16  
    17  import (
    18  	"fmt"
    19  	"go/ast"
    20  
    21  	"github.com/go-openapi/spec"
    22  
    23  	"golang.org/x/tools/go/loader"
    24  )
    25  
    26  func opConsumesSetter(op *spec.Operation) func([]string) {
    27  	return func(consumes []string) { op.Consumes = consumes }
    28  }
    29  
    30  func opProducesSetter(op *spec.Operation) func([]string) {
    31  	return func(produces []string) { op.Produces = produces }
    32  }
    33  
    34  func opSchemeSetter(op *spec.Operation) func([]string) {
    35  	return func(schemes []string) { op.Schemes = schemes }
    36  }
    37  
    38  func opSecurityDefsSetter(op *spec.Operation) func([]map[string][]string) {
    39  	return func(securityDefs []map[string][]string) { op.Security = securityDefs }
    40  }
    41  
    42  func opResponsesSetter(op *spec.Operation) func(*spec.Response, map[int]spec.Response) {
    43  	return func(def *spec.Response, scr map[int]spec.Response) {
    44  		if op.Responses == nil {
    45  			op.Responses = new(spec.Responses)
    46  		}
    47  		op.Responses.Default = def
    48  		op.Responses.StatusCodeResponses = scr
    49  	}
    50  }
    51  
    52  func opParamSetter(op *spec.Operation) func([]*spec.Parameter) {
    53  	return func(params []*spec.Parameter) {
    54  		for _, v := range params {
    55  			op.AddParam(v)
    56  		}
    57  	}
    58  }
    59  
    60  func newRoutesParser(prog *loader.Program) *routesParser {
    61  	return &routesParser{
    62  		program: prog,
    63  	}
    64  }
    65  
    66  type routesParser struct {
    67  	program     *loader.Program
    68  	definitions map[string]spec.Schema
    69  	operations  map[string]*spec.Operation
    70  	responses   map[string]spec.Response
    71  	parameters  []*spec.Parameter
    72  }
    73  
    74  func (rp *routesParser) Parse(gofile *ast.File, target interface{}, includeTags map[string]bool, excludeTags map[string]bool) error {
    75  	tgt := target.(*spec.Paths)
    76  	for _, comsec := range gofile.Comments {
    77  		content := parsePathAnnotation(rxRoute, comsec.List)
    78  
    79  		if content.Method == "" {
    80  			continue // it's not, next!
    81  		}
    82  
    83  		if !shouldAcceptTag(content.Tags, includeTags, excludeTags) {
    84  			if Debug {
    85  				fmt.Printf("route %s %s is ignored due to tag rules\n", content.Method, content.Path)
    86  			}
    87  			continue
    88  		}
    89  
    90  		pthObj := tgt.Paths[content.Path]
    91  		op := setPathOperation(
    92  			content.Method, content.ID,
    93  			&pthObj, rp.operations[content.ID])
    94  
    95  		op.Tags = content.Tags
    96  
    97  		sp := new(sectionedParser)
    98  		sp.setTitle = func(lines []string) { op.Summary = joinDropLast(lines) }
    99  		sp.setDescription = func(lines []string) { op.Description = joinDropLast(lines) }
   100  		sr := newSetResponses(rp.definitions, rp.responses, opResponsesSetter(op))
   101  		spa := newSetParams(rp.parameters, opParamSetter(op))
   102  		sp.taggers = []tagParser{
   103  			newMultiLineTagParser("Consumes", newMultilineDropEmptyParser(rxConsumes, opConsumesSetter(op)), false),
   104  			newMultiLineTagParser("Produces", newMultilineDropEmptyParser(rxProduces, opProducesSetter(op)), false),
   105  			newSingleLineTagParser("Schemes", newSetSchemes(opSchemeSetter(op))),
   106  			newMultiLineTagParser("Security", newSetSecurity(rxSecuritySchemes, opSecurityDefsSetter(op)), false),
   107  			newMultiLineTagParser("Parameters", spa, false),
   108  			newMultiLineTagParser("Responses", sr, false),
   109  		}
   110  		if err := sp.Parse(content.Remaining); err != nil {
   111  			return fmt.Errorf("operation (%s): %v", op.ID, err)
   112  		}
   113  
   114  		if tgt.Paths == nil {
   115  			tgt.Paths = make(map[string]spec.PathItem)
   116  		}
   117  		tgt.Paths[content.Path] = pthObj
   118  	}
   119  
   120  	return nil
   121  }
   122  
   123  func shouldAcceptTag(tags []string, includeTags map[string]bool, excludeTags map[string]bool) bool {
   124  	for _, tag := range tags {
   125  		if len(includeTags) > 0 {
   126  			if includeTags[tag] {
   127  				return true
   128  			}
   129  		} else if len(excludeTags) > 0 {
   130  			if excludeTags[tag] {
   131  				return false
   132  			}
   133  		}
   134  	}
   135  	return len(includeTags) <= 0
   136  }