140 lines
3.8 KiB
Go
140 lines
3.8 KiB
Go
package framework
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import (
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"fmt"
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"sort"
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"strings"
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"github.com/hashicorp/vault/logical"
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)
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// PathAppend is a helper for appending lists of paths into a single
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// list.
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func PathAppend(paths ...[]*Path) []*Path {
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result := make([]*Path, 0, 10)
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for _, ps := range paths {
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result = append(result, ps...)
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}
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return result
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}
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// Path is a single path that the backend responds to.
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type Path struct {
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// Pattern is the pattern of the URL that matches this path.
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//
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// This should be a valid regular expression. Named captures will be
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// exposed as fields that should map to a schema in Fields. If a named
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// capture is not a field in the Fields map, then it will be ignored.
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Pattern string
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// Fields is the mapping of data fields to a schema describing that
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// field. Named captures in the Pattern also map to fields. If a named
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// capture name matches a PUT body name, the named capture takes
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// priority.
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//
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// Note that only named capture fields are available in every operation,
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// whereas all fields are avaiable in the Write operation.
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Fields map[string]*FieldSchema
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// Callbacks are the set of callbacks that are called for a given
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// operation. If a callback for a specific operation is not present,
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// then logical.ErrUnsupportedOperation is automatically generated.
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//
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// The help operation is the only operation that the Path will
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// automatically handle if the Help field is set. If both the Help
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// field is set and there is a callback registered here, then the
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// callback will be called.
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Callbacks map[logical.Operation]OperationFunc
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// Help is text describing how to use this path. This will be used
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// to auto-generate the help operation. The Path will automatically
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// generate a parameter listing and URL structure based on the
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// regular expression, so the help text should just contain a description
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// of what happens.
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//
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// HelpSynopsis is a one-sentence description of the path. This will
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// be automatically line-wrapped at 80 characters.
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//
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// HelpDescription is a long-form description of the path. This will
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// be automatically line-wrapped at 80 characters.
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HelpSynopsis string
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HelpDescription string
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}
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func (p *Path) helpCallback(
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req *logical.Request, data *FieldData) (*logical.Response, error) {
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var tplData pathTemplateData
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tplData.Request = req.Path
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tplData.RoutePattern = p.Pattern
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tplData.Synopsis = strings.TrimSpace(p.HelpSynopsis)
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if tplData.Synopsis == "" {
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tplData.Synopsis = "<no synopsis>"
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}
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tplData.Description = strings.TrimSpace(p.HelpDescription)
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if tplData.Description == "" {
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tplData.Description = "<no description>"
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}
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// Alphabetize the fields
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fieldKeys := make([]string, 0, len(p.Fields))
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for k, _ := range p.Fields {
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fieldKeys = append(fieldKeys, k)
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}
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sort.Strings(fieldKeys)
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// Build the field help
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tplData.Fields = make([]pathTemplateFieldData, len(fieldKeys))
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for i, k := range fieldKeys {
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schema := p.Fields[k]
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description := strings.TrimSpace(schema.Description)
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if description == "" {
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description = "<no description>"
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}
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tplData.Fields[i] = pathTemplateFieldData{
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Key: k,
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Type: schema.Type.String(),
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Description: description,
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}
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}
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help, err := executeTemplate(pathHelpTemplate, &tplData)
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if err != nil {
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return nil, fmt.Errorf("error executing template: %s", err)
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}
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return logical.HelpResponse(help, nil), nil
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}
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type pathTemplateData struct {
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Request string
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RoutePattern string
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Synopsis string
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Description string
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Fields []pathTemplateFieldData
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}
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type pathTemplateFieldData struct {
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Key string
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Type string
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Description string
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URL bool
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}
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const pathHelpTemplate = `
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Request: {{.Request}}
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Matching Route: {{.RoutePattern}}
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{{.Synopsis}}
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## PARAMETERS
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{{range .Fields}}
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{{indent 4 .Key}} ({{.Type}})
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{{indent 8 .Description}}
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{{end}}
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## DESCRIPTION
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{{.Description}}
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`
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