refactor/idiomatic-handlers-middlewares #25
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@ -1,13 +0,0 @@
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package api
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import "net/http"
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// Adapter to encapsulate incoming requests
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type Adapter func(http.HandlerFunc) http.HandlerFunc
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// AuthHandlerFunc is http.HandlerFunc with additional Authorization information
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type AuthHandlerFunc func(Auth, http.ResponseWriter, *http.Request)
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// AuthAdapter to encapsulate incoming request with access to api.Auth
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// to manage permissions
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type AuthAdapter func(AuthHandlerFunc) AuthHandlerFunc
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@ -21,7 +21,7 @@ type Auth struct {
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// Granted returns whether the authorization is granted
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// i.e. Auth.Active fulfills Auth.Required
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func (a Auth) Granted() bool {
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func (a *Auth) Granted() bool {
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var nothingRequired = true
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// first dimension: OR ; at least one is valid
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@ -43,7 +43,7 @@ func (a Auth) Granted() bool {
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}
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// returns whether Auth.Active fulfills (contains) all @required roles
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func (a Auth) fulfills(required []string) bool {
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func (a *Auth) fulfills(required []string) bool {
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for _, requiredRole := range required {
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var found = false
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for _, activeRole := range a.Active {
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@ -7,12 +7,8 @@ import (
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"git.xdrm.io/go/aicra/internal/ctx"
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)
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// Context is a simple wrapper around context.Context that adds helper methods
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// to access additional information
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type Context struct{ context.Context }
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// Request current request
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func (c Context) Request() *http.Request {
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// GetRequest extracts the current request from a context.Context
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func GetRequest(c context.Context) *http.Request {
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var (
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raw = c.Value(ctx.Request)
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cast, ok = raw.(*http.Request)
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@ -23,8 +19,8 @@ func (c Context) Request() *http.Request {
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return cast
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}
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// ResponseWriter for this request
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func (c Context) ResponseWriter() http.ResponseWriter {
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// GetResponseWriter extracts the response writer from a context.Context
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func GetResponseWriter(c context.Context) http.ResponseWriter {
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var (
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raw = c.Value(ctx.Response)
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cast, ok = raw.(http.ResponseWriter)
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@ -35,8 +31,8 @@ func (c Context) ResponseWriter() http.ResponseWriter {
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return cast
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}
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// Auth associated with this request
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func (c Context) Auth() *Auth {
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// GetAuth returns the api.Auth associated with this request from a context.Context
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func GetAuth(c context.Context) *Auth {
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var (
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raw = c.Value(ctx.Auth)
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cast, ok = raw.(*Auth)
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41
builder.go
41
builder.go
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@ -5,7 +5,6 @@ import (
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"io"
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"net/http"
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"git.xdrm.io/go/aicra/api"
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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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"git.xdrm.io/go/aicra/internal/dynfunc"
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@ -13,10 +12,16 @@ import (
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// Builder for an aicra server
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type Builder struct {
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// the server configuration defining available services
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conf *config.Server
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// user-defined handlers bound to services from the configuration
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handlers []*apiHandler
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adapters []api.Adapter
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authAdapters []api.AuthAdapter
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// http middlewares wrapping the entire http connection (e.g. logger)
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middlewares []func(http.Handler) http.Handler
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// custom middlewares only wrapping the service handler of a request
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// they will benefit from the request's context that contains service-specific
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// information (e.g. required permisisons from the configuration)
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ctxMiddlewares []func(http.Handler) http.Handler
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}
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// represents an api handler (method-pattern combination)
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@ -41,26 +46,36 @@ func (b *Builder) AddType(t datatype.T) error {
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return nil
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}
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// With adds an http adapter (middleware)
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func (b *Builder) With(adapter api.Adapter) {
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// With adds an http middleware on top of the http connection
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//
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// Authentication management can only be done with the WithContext() methods as
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// the service associated with the request has not been found at this stage.
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// This stage is perfect for logging or generic request management.
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func (b *Builder) With(mw func(http.Handler) http.Handler) {
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if b.conf == nil {
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b.conf = &config.Server{}
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}
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if b.adapters == nil {
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b.adapters = make([]api.Adapter, 0)
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if b.middlewares == nil {
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b.middlewares = make([]func(http.Handler) http.Handler, 0)
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}
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b.adapters = append(b.adapters, adapter)
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b.middlewares = append(b.middlewares, mw)
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}
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// WithAuth adds an http adapter with auth capabilities (middleware)
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func (b *Builder) WithAuth(adapter api.AuthAdapter) {
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// WithContext adds an http middleware with the fully loaded context
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//
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// Logging or generic request management should be done with the With() method as
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// it wraps the full http connection. Middlewares added through this method only
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// wrap the user-defined service handler. The context.Context is filled with useful
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// data that can be access with api.GetRequest(), api.GetResponseWriter(),
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// api.GetAuth(), etc methods.
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func (b *Builder) WithContext(mw func(http.Handler) http.Handler) {
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if b.conf == nil {
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b.conf = &config.Server{}
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}
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if b.authAdapters == nil {
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b.authAdapters = make([]api.AuthAdapter, 0)
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if b.ctxMiddlewares == nil {
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b.ctxMiddlewares = make([]func(http.Handler) http.Handler, 0)
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}
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b.authAdapters = append(b.authAdapters, adapter)
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b.ctxMiddlewares = append(b.ctxMiddlewares, mw)
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}
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// Setup the builder with its api definition file
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@ -1,6 +1,7 @@
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package aicra
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import (
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"context"
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"errors"
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"net/http"
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"strings"
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@ -72,7 +73,7 @@ func TestBind(t *testing.T) {
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Config: "[]",
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HandlerMethod: "",
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HandlerPath: "",
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HandlerFn: func(*api.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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HandlerFn: func(context.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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BindErr: errUnknownService,
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BuildErr: nil,
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},
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@ -108,7 +109,7 @@ func TestBind(t *testing.T) {
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]`,
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HandlerMethod: http.MethodPost,
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HandlerPath: "/path",
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HandlerFn: func(*api.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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HandlerFn: func(context.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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BindErr: errUnknownService,
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BuildErr: errMissingHandler,
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},
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@ -126,7 +127,7 @@ func TestBind(t *testing.T) {
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]`,
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HandlerMethod: http.MethodGet,
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HandlerPath: "/paths",
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HandlerFn: func(*api.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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HandlerFn: func(context.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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BindErr: errUnknownService,
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BuildErr: errMissingHandler,
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},
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@ -144,7 +145,7 @@ func TestBind(t *testing.T) {
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]`,
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HandlerMethod: http.MethodGet,
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HandlerPath: "/path",
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HandlerFn: func(*api.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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HandlerFn: func(context.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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BindErr: nil,
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BuildErr: nil,
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},
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@ -164,7 +165,7 @@ func TestBind(t *testing.T) {
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]`,
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HandlerMethod: http.MethodGet,
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HandlerPath: "/path",
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HandlerFn: func(*api.Context, struct{ Name int }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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HandlerFn: func(context.Context, struct{ Name int }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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BindErr: nil,
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BuildErr: nil,
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},
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@ -184,7 +185,7 @@ func TestBind(t *testing.T) {
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]`,
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HandlerMethod: http.MethodGet,
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HandlerPath: "/path",
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HandlerFn: func(*api.Context, struct{ Name uint }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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HandlerFn: func(context.Context, struct{ Name uint }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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BindErr: nil,
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BuildErr: nil,
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},
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@ -204,7 +205,7 @@ func TestBind(t *testing.T) {
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]`,
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HandlerMethod: http.MethodGet,
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HandlerPath: "/path",
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HandlerFn: func(*api.Context, struct{ Name string }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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HandlerFn: func(context.Context, struct{ Name string }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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BindErr: nil,
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BuildErr: nil,
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},
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@ -224,7 +225,7 @@ func TestBind(t *testing.T) {
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]`,
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HandlerMethod: http.MethodGet,
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HandlerPath: "/path",
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HandlerFn: func(*api.Context, struct{ Name bool }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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HandlerFn: func(context.Context, struct{ Name bool }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
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BindErr: nil,
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BuildErr: nil,
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},
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112
handler.go
112
handler.go
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@ -17,30 +17,31 @@ type Handler Builder
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// ServeHTTP implements http.Handler and wraps it in middlewares (adapters)
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func (s Handler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
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var h = http.HandlerFunc(s.resolve)
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var h http.Handler = http.HandlerFunc(s.resolve)
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for _, adapter := range s.adapters {
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h = adapter(h)
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for _, mw := range s.middlewares {
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h = mw(h)
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}
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h(w, r)
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h.ServeHTTP(w, r)
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}
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// ServeHTTP implements http.Handler and wraps it in middlewares (adapters)
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func (s Handler) resolve(w http.ResponseWriter, r *http.Request) {
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// 1. find a matching service from config
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// 1ind a matching service from config
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var service = s.conf.Find(r)
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if service == nil {
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handleError(api.ErrUnknownService, w, r)
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return
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}
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// 2. extract request data
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// extract request data
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var input, err = extractInput(service, *r)
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if err != nil {
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handleError(api.ErrMissingParam, w, r)
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return
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}
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// 3. find a matching handler
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// find a matching handler
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var handler *apiHandler
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for _, h := range s.handlers {
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if h.Method == service.Method && h.Path == service.Pattern {
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@ -48,63 +49,36 @@ func (s Handler) resolve(w http.ResponseWriter, r *http.Request) {
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}
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}
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// 4. fail on no matching handler
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// fail on no matching handler
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if handler == nil {
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handleError(api.ErrUncallableService, w, r)
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return
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}
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|
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// replace format '[a]' in scope where 'a' is an existing input's name
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scope := make([][]string, len(service.Scope))
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for a, list := range service.Scope {
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scope[a] = make([]string, len(list))
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for b, perm := range list {
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scope[a][b] = perm
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for name, value := range input.Data {
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var (
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token = fmt.Sprintf("[%s]", name)
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replacement = ""
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)
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if value != nil {
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replacement = fmt.Sprintf("[%v]", value)
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}
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scope[a][b] = strings.ReplaceAll(scope[a][b], token, replacement)
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}
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}
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}
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var auth = api.Auth{
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Required: scope,
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Active: []string{},
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}
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|
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// 5. run auth-aware middlewares
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var h = api.AuthHandlerFunc(func(a api.Auth, w http.ResponseWriter, r *http.Request) {
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if !a.Granted() {
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handleError(api.ErrPermission, w, r)
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return
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}
|
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|
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s.handle(input, handler, service, w, r)
|
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})
|
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|
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for _, adapter := range s.authAdapters {
|
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h = adapter(h)
|
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}
|
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h(auth, w, r)
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|
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}
|
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|
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func (s *Handler) handle(input *reqdata.T, handler *apiHandler, service *config.Service, w http.ResponseWriter, r *http.Request) {
|
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// build context with builtin data
|
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c := r.Context()
|
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c = context.WithValue(c, ctx.Request, r)
|
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c = context.WithValue(c, ctx.Response, w)
|
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c = context.WithValue(c, ctx.Auth, w)
|
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apictx := &api.Context{Context: c}
|
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c = context.WithValue(c, ctx.Auth, buildAuth(service.Scope, input.Data))
|
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|
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// create http handler
|
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var h http.Handler = http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
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// use context defined in the request
|
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s.handle(r.Context(), input, handler, service, w, r)
|
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})
|
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|
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// run middlewares the handler
|
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for _, mw := range s.ctxMiddlewares {
|
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h = mw(h)
|
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}
|
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|
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// serve using the context with values
|
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h.ServeHTTP(w, r.WithContext(c))
|
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}
|
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|
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func (s *Handler) handle(c context.Context, input *reqdata.T, handler *apiHandler, service *config.Service, w http.ResponseWriter, r *http.Request) {
|
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// pass execution to the handler
|
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var outData, outErr = handler.dyn.Handle(apictx, input.Data)
|
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var outData, outErr = handler.dyn.Handle(c, input.Data)
|
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|
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// build response from returned arguments
|
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var res = api.EmptyResponse().WithError(outErr)
|
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|
@ -157,3 +131,35 @@ func extractInput(service *config.Service, req http.Request) (*reqdata.T, error)
|
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|
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return dataset, nil
|
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}
|
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|
||||
// buildAuth builds the api.Auth struct from the service scope configuration
|
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//
|
||||
// it replaces format '[a]' in scope where 'a' is an existing input argument's
|
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// name with its value
|
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func buildAuth(scope [][]string, in map[string]interface{}) *api.Auth {
|
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updated := make([][]string, len(scope))
|
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|
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// replace '[arg_name]' with the 'arg_name' value if it is a known variable
|
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// name
|
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for a, list := range scope {
|
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updated[a] = make([]string, len(list))
|
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for b, perm := range list {
|
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updated[a][b] = perm
|
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for name, value := range in {
|
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var (
|
||||
token = fmt.Sprintf("[%s]", name)
|
||||
replacement = ""
|
||||
)
|
||||
if value != nil {
|
||||
replacement = fmt.Sprintf("[%v]", value)
|
||||
}
|
||||
updated[a][b] = strings.ReplaceAll(updated[a][b], token, replacement)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return &api.Auth{
|
||||
Required: updated,
|
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Active: []string{},
|
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}
|
||||
}
|
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|
|
|
@ -48,15 +48,15 @@ func TestWith(t *testing.T) {
|
|||
type ckey int
|
||||
const key ckey = 0
|
||||
|
||||
middleware := func(next http.HandlerFunc) http.HandlerFunc {
|
||||
return func(w http.ResponseWriter, r *http.Request) {
|
||||
middleware := func(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
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newr := r
|
||||
|
||||
// first time -> store 1
|
||||
value := r.Context().Value(key)
|
||||
if value == nil {
|
||||
newr = r.WithContext(context.WithValue(r.Context(), key, int(1)))
|
||||
next(w, newr)
|
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next.ServeHTTP(w, newr)
|
||||
return
|
||||
}
|
||||
|
||||
|
@ -67,8 +67,8 @@ func TestWith(t *testing.T) {
|
|||
}
|
||||
cast++
|
||||
newr = r.WithContext(context.WithValue(r.Context(), key, cast))
|
||||
next(w, newr)
|
||||
}
|
||||
next.ServeHTTP(w, newr)
|
||||
})
|
||||
}
|
||||
|
||||
// add middleware @n times
|
||||
|
@ -82,7 +82,7 @@ func TestWith(t *testing.T) {
|
|||
t.Fatalf("setup: unexpected error <%v>", err)
|
||||
}
|
||||
|
||||
pathHandler := func(ctx *api.Context) (*struct{}, api.Err) {
|
||||
pathHandler := func(ctx context.Context) (*struct{}, api.Err) {
|
||||
// write value from middlewares into response
|
||||
value := ctx.Value(key)
|
||||
if value == nil {
|
||||
|
@ -93,7 +93,7 @@ func TestWith(t *testing.T) {
|
|||
t.Fatalf("cannot cast context data to int")
|
||||
}
|
||||
// write to response
|
||||
ctx.ResponseWriter().Write([]byte(fmt.Sprintf("#%d#", cast)))
|
||||
api.GetResponseWriter(ctx).Write([]byte(fmt.Sprintf("#%d#", cast)))
|
||||
|
||||
return nil, api.ErrSuccess
|
||||
}
|
||||
|
@ -212,8 +212,13 @@ func TestWithAuth(t *testing.T) {
|
|||
}
|
||||
|
||||
// tester middleware (last executed)
|
||||
builder.WithAuth(func(next api.AuthHandlerFunc) api.AuthHandlerFunc {
|
||||
return func(a api.Auth, w http.ResponseWriter, r *http.Request) {
|
||||
builder.WithContext(func(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
a := api.GetAuth(r.Context())
|
||||
if a == nil {
|
||||
t.Fatalf("cannot access api.Auth form request context")
|
||||
}
|
||||
|
||||
if a.Granted() == tc.granted {
|
||||
return
|
||||
}
|
||||
|
@ -222,14 +227,20 @@ func TestWithAuth(t *testing.T) {
|
|||
} else {
|
||||
t.Fatalf("expected granted auth")
|
||||
}
|
||||
}
|
||||
next.ServeHTTP(w, r)
|
||||
})
|
||||
})
|
||||
|
||||
builder.WithAuth(func(next api.AuthHandlerFunc) api.AuthHandlerFunc {
|
||||
return func(a api.Auth, w http.ResponseWriter, r *http.Request) {
|
||||
a.Active = tc.permissions
|
||||
next(a, w, r)
|
||||
builder.WithContext(func(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
a := api.GetAuth(r.Context())
|
||||
if a == nil {
|
||||
t.Fatalf("cannot access api.Auth form request context")
|
||||
}
|
||||
|
||||
a.Active = tc.permissions
|
||||
next.ServeHTTP(w, r)
|
||||
})
|
||||
})
|
||||
|
||||
err := builder.Setup(strings.NewReader(tc.manifest))
|
||||
|
@ -237,7 +248,7 @@ func TestWithAuth(t *testing.T) {
|
|||
t.Fatalf("setup: unexpected error <%v>", err)
|
||||
}
|
||||
|
||||
pathHandler := func(ctx *api.Context) (*struct{}, api.Err) {
|
||||
pathHandler := func(ctx context.Context) (*struct{}, api.Err) {
|
||||
return nil, api.ErrNotImplemented
|
||||
}
|
||||
|
||||
|
@ -290,7 +301,7 @@ func TestDynamicScope(t *testing.T) {
|
|||
}
|
||||
]`,
|
||||
path: "/path/{id}",
|
||||
handler: func(*api.Context, struct{ Input1 uint }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
handler: func(context.Context, struct{ Input1 uint }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
url: "/path/123",
|
||||
body: ``,
|
||||
permissions: []string{"user[123]"},
|
||||
|
@ -311,7 +322,7 @@ func TestDynamicScope(t *testing.T) {
|
|||
}
|
||||
]`,
|
||||
path: "/path/{id}",
|
||||
handler: func(*api.Context, struct{ Input1 uint }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
handler: func(context.Context, struct{ Input1 uint }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
url: "/path/666",
|
||||
body: ``,
|
||||
permissions: []string{"user[123]"},
|
||||
|
@ -332,7 +343,7 @@ func TestDynamicScope(t *testing.T) {
|
|||
}
|
||||
]`,
|
||||
path: "/path/{id}",
|
||||
handler: func(*api.Context, struct{ User uint }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
handler: func(context.Context, struct{ User uint }) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
url: "/path/123",
|
||||
body: ``,
|
||||
permissions: []string{"prefix.user[123].suffix"},
|
||||
|
@ -354,7 +365,7 @@ func TestDynamicScope(t *testing.T) {
|
|||
}
|
||||
]`,
|
||||
path: "/prefix/{pid}/user/{uid}",
|
||||
handler: func(*api.Context, struct {
|
||||
handler: func(context.Context, struct {
|
||||
Prefix uint
|
||||
User uint
|
||||
}) (*struct{}, api.Err) {
|
||||
|
@ -381,7 +392,7 @@ func TestDynamicScope(t *testing.T) {
|
|||
}
|
||||
]`,
|
||||
path: "/prefix/{pid}/user/{uid}",
|
||||
handler: func(*api.Context, struct {
|
||||
handler: func(context.Context, struct {
|
||||
Prefix uint
|
||||
User uint
|
||||
}) (*struct{}, api.Err) {
|
||||
|
@ -409,7 +420,7 @@ func TestDynamicScope(t *testing.T) {
|
|||
}
|
||||
]`,
|
||||
path: "/prefix/{pid}/user/{uid}/suffix/{sid}",
|
||||
handler: func(*api.Context, struct {
|
||||
handler: func(context.Context, struct {
|
||||
Prefix uint
|
||||
User uint
|
||||
Suffix uint
|
||||
|
@ -438,7 +449,7 @@ func TestDynamicScope(t *testing.T) {
|
|||
}
|
||||
]`,
|
||||
path: "/prefix/{pid}/user/{uid}/suffix/{sid}",
|
||||
handler: func(*api.Context, struct {
|
||||
handler: func(context.Context, struct {
|
||||
Prefix uint
|
||||
User uint
|
||||
Suffix uint
|
||||
|
@ -460,8 +471,12 @@ func TestDynamicScope(t *testing.T) {
|
|||
}
|
||||
|
||||
// tester middleware (last executed)
|
||||
builder.WithAuth(func(next api.AuthHandlerFunc) api.AuthHandlerFunc {
|
||||
return func(a api.Auth, w http.ResponseWriter, r *http.Request) {
|
||||
builder.WithContext(func(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
a := api.GetAuth(r.Context())
|
||||
if a == nil {
|
||||
t.Fatalf("cannot access api.Auth form request context")
|
||||
}
|
||||
if a.Granted() == tc.granted {
|
||||
return
|
||||
}
|
||||
|
@ -470,15 +485,20 @@ func TestDynamicScope(t *testing.T) {
|
|||
} else {
|
||||
t.Fatalf("expected granted auth")
|
||||
}
|
||||
}
|
||||
next.ServeHTTP(w, r)
|
||||
})
|
||||
})
|
||||
|
||||
// update permissions
|
||||
builder.WithAuth(func(next api.AuthHandlerFunc) api.AuthHandlerFunc {
|
||||
return func(a api.Auth, w http.ResponseWriter, r *http.Request) {
|
||||
a.Active = tc.permissions
|
||||
next(a, w, r)
|
||||
builder.WithContext(func(next http.Handler) http.Handler {
|
||||
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
|
||||
a := api.GetAuth(r.Context())
|
||||
if a == nil {
|
||||
t.Fatalf("cannot access api.Auth form request context")
|
||||
}
|
||||
a.Active = tc.permissions
|
||||
next.ServeHTTP(w, r)
|
||||
})
|
||||
})
|
||||
|
||||
err := builder.Setup(strings.NewReader(tc.manifest))
|
||||
|
|
|
@ -14,7 +14,7 @@ const errHandlerNotFunc = cerr("handler must be a func")
|
|||
const errNoServiceForHandler = cerr("no service found for this handler")
|
||||
|
||||
// errMissingHandlerArgumentParam - missing params arguments for handler
|
||||
const errMissingHandlerContextArgument = cerr("missing handler first argument of type *api.Context")
|
||||
const errMissingHandlerContextArgument = cerr("missing handler first argument of type context.Context")
|
||||
|
||||
// errMissingHandlerInputArgument - missing params arguments for handler
|
||||
const errMissingHandlerInputArgument = cerr("missing handler argument: input struct")
|
||||
|
|
|
@ -1,6 +1,7 @@
|
|||
package dynfunc
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"log"
|
||||
"reflect"
|
||||
|
@ -50,7 +51,7 @@ func Build(fn interface{}, service config.Service) (*Handler, error) {
|
|||
}
|
||||
|
||||
// Handle binds input `data` into the dynamic function and returns an output map
|
||||
func (h *Handler) Handle(ctx *api.Context, data map[string]interface{}) (map[string]interface{}, api.Err) {
|
||||
func (h *Handler) Handle(ctx context.Context, data map[string]interface{}) (map[string]interface{}, api.Err) {
|
||||
var (
|
||||
ert = reflect.TypeOf(api.Err{})
|
||||
fnv = reflect.ValueOf(h.fn)
|
||||
|
|
|
@ -1,6 +1,7 @@
|
|||
package dynfunc
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"testing"
|
||||
|
@ -52,7 +53,7 @@ func TestInput(t *testing.T) {
|
|||
{
|
||||
Name: "none required none provided",
|
||||
Spec: (&testsignature{}).withArgs(),
|
||||
Fn: func(*api.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
Fn: func(context.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
HasContext: false,
|
||||
Input: []interface{}{},
|
||||
ExpectedOutput: []interface{}{},
|
||||
|
@ -61,7 +62,7 @@ func TestInput(t *testing.T) {
|
|||
{
|
||||
Name: "int proxy (0)",
|
||||
Spec: (&testsignature{}).withArgs(reflect.TypeOf(int(0))),
|
||||
Fn: func(ctx *api.Context, in intstruct) (*intstruct, api.Err) {
|
||||
Fn: func(ctx context.Context, in intstruct) (*intstruct, api.Err) {
|
||||
return &intstruct{P1: in.P1}, api.ErrSuccess
|
||||
},
|
||||
HasContext: false,
|
||||
|
@ -72,7 +73,7 @@ func TestInput(t *testing.T) {
|
|||
{
|
||||
Name: "int proxy (11)",
|
||||
Spec: (&testsignature{}).withArgs(reflect.TypeOf(int(0))),
|
||||
Fn: func(ctx *api.Context, in intstruct) (*intstruct, api.Err) {
|
||||
Fn: func(ctx context.Context, in intstruct) (*intstruct, api.Err) {
|
||||
return &intstruct{P1: in.P1}, api.ErrSuccess
|
||||
},
|
||||
HasContext: false,
|
||||
|
@ -83,7 +84,7 @@ func TestInput(t *testing.T) {
|
|||
{
|
||||
Name: "*int proxy (nil)",
|
||||
Spec: (&testsignature{}).withArgs(reflect.TypeOf(new(int))),
|
||||
Fn: func(ctx *api.Context, in intptrstruct) (*intptrstruct, api.Err) {
|
||||
Fn: func(ctx context.Context, in intptrstruct) (*intptrstruct, api.Err) {
|
||||
return &intptrstruct{P1: in.P1}, api.ErrSuccess
|
||||
},
|
||||
HasContext: false,
|
||||
|
@ -94,7 +95,7 @@ func TestInput(t *testing.T) {
|
|||
{
|
||||
Name: "*int proxy (28)",
|
||||
Spec: (&testsignature{}).withArgs(reflect.TypeOf(new(int))),
|
||||
Fn: func(ctx *api.Context, in intptrstruct) (*intstruct, api.Err) {
|
||||
Fn: func(ctx context.Context, in intptrstruct) (*intstruct, api.Err) {
|
||||
return &intstruct{P1: *in.P1}, api.ErrSuccess
|
||||
},
|
||||
HasContext: false,
|
||||
|
@ -105,7 +106,7 @@ func TestInput(t *testing.T) {
|
|||
{
|
||||
Name: "*int proxy (13)",
|
||||
Spec: (&testsignature{}).withArgs(reflect.TypeOf(new(int))),
|
||||
Fn: func(ctx *api.Context, in intptrstruct) (*intstruct, api.Err) {
|
||||
Fn: func(ctx context.Context, in intptrstruct) (*intstruct, api.Err) {
|
||||
return &intstruct{P1: *in.P1}, api.ErrSuccess
|
||||
},
|
||||
HasContext: false,
|
||||
|
@ -131,7 +132,7 @@ func TestInput(t *testing.T) {
|
|||
input[key] = val
|
||||
}
|
||||
|
||||
var output, err = handler.Handle(&api.Context{}, input)
|
||||
var output, err = handler.Handle(context.Background(), input)
|
||||
if err != tcase.ExpectedErr {
|
||||
t.Fatalf("expected api error <%v> got <%v>", tcase.ExpectedErr, err)
|
||||
}
|
||||
|
|
|
@ -1,6 +1,7 @@
|
|||
package dynfunc
|
||||
|
||||
import (
|
||||
"context"
|
||||
"fmt"
|
||||
"reflect"
|
||||
"strings"
|
||||
|
@ -48,12 +49,17 @@ func BuildSignature(service config.Service) *Signature {
|
|||
|
||||
// ValidateInput validates a handler's input arguments against the service signature
|
||||
func (s *Signature) ValidateInput(handlerType reflect.Type) error {
|
||||
ctxType := reflect.TypeOf(api.Context{})
|
||||
ctxType := reflect.TypeOf((*context.Context)(nil)).Elem()
|
||||
|
||||
// missing or invalid first arg: api.Context
|
||||
if handlerType.NumIn() < 1 || ctxType.AssignableTo(handlerType.In(0)) {
|
||||
// missing or invalid first arg: context.Context
|
||||
if handlerType.NumIn() < 1 {
|
||||
return errMissingHandlerContextArgument
|
||||
}
|
||||
firstArgType := handlerType.In(0)
|
||||
|
||||
if !firstArgType.Implements(ctxType) {
|
||||
return fmt.Errorf("fock")
|
||||
}
|
||||
|
||||
// no input required
|
||||
if len(s.Input) == 0 {
|
||||
|
|
|
@ -1,6 +1,7 @@
|
|||
package dynfunc
|
||||
|
||||
import (
|
||||
"context"
|
||||
"errors"
|
||||
"fmt"
|
||||
"reflect"
|
||||
|
@ -20,22 +21,22 @@ func TestInputCheck(t *testing.T) {
|
|||
{
|
||||
Name: "no input 0 given",
|
||||
Input: map[string]reflect.Type{},
|
||||
Fn: func(*api.Context) {},
|
||||
FnCtx: func(*api.Context) {},
|
||||
Fn: func(context.Context) {},
|
||||
FnCtx: func(context.Context) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
Name: "no input 1 given",
|
||||
Input: map[string]reflect.Type{},
|
||||
Fn: func(*api.Context, int) {},
|
||||
FnCtx: func(*api.Context, int) {},
|
||||
Fn: func(context.Context, int) {},
|
||||
FnCtx: func(context.Context, int) {},
|
||||
Err: errUnexpectedInput,
|
||||
},
|
||||
{
|
||||
Name: "no input 2 given",
|
||||
Input: map[string]reflect.Type{},
|
||||
Fn: func(*api.Context, int, string) {},
|
||||
FnCtx: func(*api.Context, int, string) {},
|
||||
Fn: func(context.Context, int, string) {},
|
||||
FnCtx: func(context.Context, int, string) {},
|
||||
Err: errUnexpectedInput,
|
||||
},
|
||||
{
|
||||
|
@ -43,8 +44,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(int(0)),
|
||||
},
|
||||
Fn: func(*api.Context) {},
|
||||
FnCtx: func(*api.Context) {},
|
||||
Fn: func(context.Context) {},
|
||||
FnCtx: func(context.Context) {},
|
||||
Err: errMissingHandlerInputArgument,
|
||||
},
|
||||
{
|
||||
|
@ -52,8 +53,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(int(0)),
|
||||
},
|
||||
Fn: func(*api.Context, int) {},
|
||||
FnCtx: func(*api.Context, int) {},
|
||||
Fn: func(context.Context, int) {},
|
||||
FnCtx: func(context.Context, int) {},
|
||||
Err: errMissingParamArgument,
|
||||
},
|
||||
{
|
||||
|
@ -61,8 +62,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"test1": reflect.TypeOf(int(0)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{}) {},
|
||||
FnCtx: func(*api.Context, struct{}) {},
|
||||
Fn: func(context.Context, struct{}) {},
|
||||
FnCtx: func(context.Context, struct{}) {},
|
||||
Err: errUnexportedName,
|
||||
},
|
||||
{
|
||||
|
@ -70,8 +71,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(int(0)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{}) {},
|
||||
FnCtx: func(*api.Context, struct{}) {},
|
||||
Fn: func(context.Context, struct{}) {},
|
||||
FnCtx: func(context.Context, struct{}) {},
|
||||
Err: errMissingConfigArgument,
|
||||
},
|
||||
{
|
||||
|
@ -79,8 +80,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(int(0)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 string }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 string }) {},
|
||||
Fn: func(context.Context, struct{ Test1 string }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 string }) {},
|
||||
Err: errWrongParamTypeFromConfig,
|
||||
},
|
||||
{
|
||||
|
@ -88,8 +89,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(int(0)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 int }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 int }) {},
|
||||
Fn: func(context.Context, struct{ Test1 int }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 int }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -97,8 +98,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(new(int)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{}) {},
|
||||
FnCtx: func(*api.Context, struct{}) {},
|
||||
Fn: func(context.Context, struct{}) {},
|
||||
FnCtx: func(context.Context, struct{}) {},
|
||||
Err: errMissingConfigArgument,
|
||||
},
|
||||
{
|
||||
|
@ -106,8 +107,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(new(int)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 string }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 string }) {},
|
||||
Fn: func(context.Context, struct{ Test1 string }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 string }) {},
|
||||
Err: errWrongParamTypeFromConfig,
|
||||
},
|
||||
{
|
||||
|
@ -115,8 +116,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(new(int)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 *string }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 *string }) {},
|
||||
Fn: func(context.Context, struct{ Test1 *string }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 *string }) {},
|
||||
Err: errWrongParamTypeFromConfig,
|
||||
},
|
||||
{
|
||||
|
@ -124,8 +125,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(new(int)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 *int }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 *int }) {},
|
||||
Fn: func(context.Context, struct{ Test1 *int }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 *int }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -133,8 +134,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(string("")),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 string }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 string }) {},
|
||||
Fn: func(context.Context, struct{ Test1 string }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 string }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -142,8 +143,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(uint(0)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 uint }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 uint }) {},
|
||||
Fn: func(context.Context, struct{ Test1 uint }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 uint }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -151,8 +152,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(float64(0)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 float64 }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 float64 }) {},
|
||||
Fn: func(context.Context, struct{ Test1 float64 }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 float64 }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -160,8 +161,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf([]byte("")),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 []byte }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 []byte }) {},
|
||||
Fn: func(context.Context, struct{ Test1 []byte }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 []byte }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -169,8 +170,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf([]rune("")),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 []rune }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 []rune }) {},
|
||||
Fn: func(context.Context, struct{ Test1 []rune }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 []rune }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -178,8 +179,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(new(string)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 *string }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 *string }) {},
|
||||
Fn: func(context.Context, struct{ Test1 *string }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 *string }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -187,8 +188,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(new(uint)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 *uint }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 *uint }) {},
|
||||
Fn: func(context.Context, struct{ Test1 *uint }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 *uint }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -196,8 +197,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(new(float64)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 *float64 }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 *float64 }) {},
|
||||
Fn: func(context.Context, struct{ Test1 *float64 }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 *float64 }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -205,8 +206,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(new([]byte)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 *[]byte }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 *[]byte }) {},
|
||||
Fn: func(context.Context, struct{ Test1 *[]byte }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 *[]byte }) {},
|
||||
Err: nil,
|
||||
},
|
||||
{
|
||||
|
@ -214,8 +215,8 @@ func TestInputCheck(t *testing.T) {
|
|||
Input: map[string]reflect.Type{
|
||||
"Test1": reflect.TypeOf(new([]rune)),
|
||||
},
|
||||
Fn: func(*api.Context, struct{ Test1 *[]rune }) {},
|
||||
FnCtx: func(*api.Context, struct{ Test1 *[]rune }) {},
|
||||
Fn: func(context.Context, struct{ Test1 *[]rune }) {},
|
||||
FnCtx: func(context.Context, struct{ Test1 *[]rune }) {},
|
||||
Err: nil,
|
||||
},
|
||||
}
|
||||
|
@ -259,37 +260,37 @@ func TestOutputCheck(t *testing.T) {
|
|||
// no input -> missing api.Err
|
||||
{
|
||||
Output: map[string]reflect.Type{},
|
||||
Fn: func(*api.Context) {},
|
||||
Fn: func(context.Context) {},
|
||||
Err: errMissingHandlerOutputArgument,
|
||||
},
|
||||
// no input -> with last type not api.Err
|
||||
{
|
||||
Output: map[string]reflect.Type{},
|
||||
Fn: func(*api.Context) bool { return true },
|
||||
Fn: func(context.Context) bool { return true },
|
||||
Err: errMissingHandlerErrorArgument,
|
||||
},
|
||||
// no input -> with api.Err
|
||||
{
|
||||
Output: map[string]reflect.Type{},
|
||||
Fn: func(*api.Context) api.Err { return api.ErrSuccess },
|
||||
Fn: func(context.Context) api.Err { return api.ErrSuccess },
|
||||
Err: nil,
|
||||
},
|
||||
// no input -> missing *api.Context
|
||||
// no input -> missing context.Context
|
||||
{
|
||||
Output: map[string]reflect.Type{},
|
||||
Fn: func(*api.Context) api.Err { return api.ErrSuccess },
|
||||
Fn: func(context.Context) api.Err { return api.ErrSuccess },
|
||||
Err: errMissingHandlerContextArgument,
|
||||
},
|
||||
// no input -> invlaid *api.Context type
|
||||
// no input -> invlaid context.Context type
|
||||
{
|
||||
Output: map[string]reflect.Type{},
|
||||
Fn: func(*api.Context, int) api.Err { return api.ErrSuccess },
|
||||
Fn: func(context.Context, int) api.Err { return api.ErrSuccess },
|
||||
Err: errMissingHandlerContextArgument,
|
||||
},
|
||||
// func can have output if not specified
|
||||
{
|
||||
Output: map[string]reflect.Type{},
|
||||
Fn: func(*api.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
Fn: func(context.Context) (*struct{}, api.Err) { return nil, api.ErrSuccess },
|
||||
Err: nil,
|
||||
},
|
||||
// missing output struct in func
|
||||
|
|
Loading…
Reference in New Issue