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importer.go
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importer.go
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package importer
import (
"encoding/json"
"errors"
"fmt"
"os"
"strings"
log "github.com/sirupsen/logrus"
kingpin "gopkg.in/alecthomas/kingpin.v2"
"github.com/TykTechnologies/tyk/apidef"
"github.com/TykTechnologies/tyk/apidef/importer"
)
const (
cmdName = "import"
cmdDesc = "Imports a BluePrint/Swagger/WSDL file"
)
var (
imp *Importer
errUnknownMode = errors.New("Unknown mode")
)
// Importer wraps the import functionality.
type Importer struct {
input *string
swaggerMode *bool
bluePrintMode *bool
wsdlMode *bool
portNames *string
createAPI *bool
orgID *string
upstreamTarget *string
asMock *bool
forAPI *string
asVersion *string
}
func init() {
imp = &Importer{}
}
// AddTo initializes an importer object.
func AddTo(app *kingpin.Application) {
cmd := app.Command(cmdName, cmdDesc)
imp.input = cmd.Arg("input file", "e.g. blueprint.json, swagger.json, service.wsdl etc.").String()
imp.swaggerMode = cmd.Flag("swagger", "Use Swagger mode").Bool()
imp.bluePrintMode = cmd.Flag("blueprint", "Use BluePrint mode").Bool()
imp.wsdlMode = cmd.Flag("wsdl", "Use WSDL mode").Bool()
imp.portNames = cmd.Flag("port-names", "Specify port name of each service in the WSDL file. Input format is comma separated list of serviceName:portName").String()
imp.createAPI = cmd.Flag("create-api", "Creates a new API definition from the blueprint").Bool()
imp.orgID = cmd.Flag("org-id", "assign the API Definition to this org_id (required with create-api").String()
imp.upstreamTarget = cmd.Flag("upstream-target", "set the upstream target for the definition").PlaceHolder("URL").String()
imp.asMock = cmd.Flag("as-mock", "creates the API as a mock based on example fields").Bool()
imp.forAPI = cmd.Flag("for-api", "adds blueprint to existing API Definition as version").PlaceHolder("PATH").String()
imp.asVersion = cmd.Flag("as-version", "the version number to use when inserting").PlaceHolder("VERSION").String()
cmd.Action(imp.Import)
}
// Import performs the import process.
func (i *Importer) Import(ctx *kingpin.ParseContext) (err error) {
if *i.swaggerMode {
err = i.handleSwaggerMode()
if err != nil {
log.Fatal(err)
os.Exit(1)
}
} else if *i.bluePrintMode {
err = i.handleBluePrintMode()
if err != nil {
log.Fatal(err)
os.Exit(1)
}
} else if *i.wsdlMode {
err = i.handleWSDLMode()
if err != nil {
log.Fatal(err)
os.Exit(1)
}
} else {
log.Fatal(errUnknownMode)
os.Exit(1)
}
os.Exit(0)
return nil
}
func (i *Importer) validateInput() error {
if *i.createAPI {
if *i.upstreamTarget == "" || *i.orgID == "" {
return fmt.Errorf("No upstream target or org ID defined, these are both required")
}
} else {
if *i.forAPI == "" {
return fmt.Errorf("If adding to an API, the path to the definition must be listed")
}
if *i.asVersion == "" {
return fmt.Errorf("No version defined for this import operation, please set an import ID using the --as-version flag")
}
}
return nil
}
func (i *Importer) processPortNames() map[string]string {
p := make(map[string]string)
if *i.portNames == "" {
return p
}
pairs := strings.Split(*i.portNames, ",")
for _, v := range pairs {
components := strings.Split(v, ":")
p[components[0]] = components[1]
}
return p
}
func (i *Importer) handleBluePrintMode() error {
if !*i.createAPI {
// Different branch, here we need an API Definition to modify
if *i.forAPI == "" {
return fmt.Errorf("If adding to an API, the path to the definition must be listed")
}
if *i.asVersion == "" {
return fmt.Errorf("No version defined for this import operation, please set an import ID using the --as-version flag")
}
defFromFile, err := i.apiDefLoadFile(*i.forAPI)
if err != nil {
return fmt.Errorf("failed to load and decode file data for API Definition: %v", err)
}
bp, err := i.bluePrintLoadFile(*i.input)
if err != nil {
return fmt.Errorf("File load error: %v", err)
}
versionData, err := bp.ConvertIntoApiVersion(*i.asMock)
if err != nil {
return fmt.Errorf("onversion into API Def failed: %v", err)
}
if err := bp.InsertIntoAPIDefinitionAsVersion(versionData, defFromFile, *i.asVersion); err != nil {
return fmt.Errorf("Insertion failed: %v", err)
}
i.printDef(defFromFile)
}
if *i.upstreamTarget == "" && *i.orgID == "" {
return fmt.Errorf("No upstream target or org ID defined, these are both required")
}
// Create the API with the blueprint
bp, err := i.bluePrintLoadFile(*i.input)
if err != nil {
return fmt.Errorf("File load error: %v", err)
}
def, err := bp.ToAPIDefinition(*i.orgID, *i.upstreamTarget, *i.asMock)
if err != nil {
return fmt.Errorf("Failed to create API Definition from file")
}
i.printDef(def)
return nil
}
func (i *Importer) handleSwaggerMode() error {
if *i.createAPI {
if *i.upstreamTarget != "" && *i.orgID != "" {
// Create the API with the blueprint
s, err := i.swaggerLoadFile(*i.input)
if err != nil {
return fmt.Errorf("File load error: %v", err)
}
def, err := s.ToAPIDefinition(*i.orgID, *i.upstreamTarget, *i.asMock)
if err != nil {
return fmt.Errorf("Failed to create API Defintition from file")
}
i.printDef(def)
return nil
}
return fmt.Errorf("No upstream target or org ID defined, these are both required")
}
// Different branch, here we need an API Definition to modify
if *i.forAPI == "" {
return fmt.Errorf("If adding to an API, the path to the definition must be listed")
}
if *i.asVersion == "" {
return fmt.Errorf("No version defined for this import operation, please set an import ID using the --as-version flag")
}
defFromFile, err := i.apiDefLoadFile(*i.forAPI)
if err != nil {
return fmt.Errorf("failed to load and decode file data for API Definition: %v", err)
}
s, err := i.swaggerLoadFile(*i.input)
if err != nil {
return fmt.Errorf("File load error: %v", err)
}
versionData, err := s.ConvertIntoApiVersion(*i.asMock)
if err != nil {
return fmt.Errorf("Conversion into API Def failed: %v", err)
}
if err := s.InsertIntoAPIDefinitionAsVersion(versionData, defFromFile, *i.asVersion); err != nil {
return fmt.Errorf("Insertion failed: %v", err)
}
i.printDef(defFromFile)
return nil
}
func (i *Importer) handleWSDLMode() error {
var def *apidef.APIDefinition
//Process Input
if err := i.validateInput(); err != nil {
return err
}
serviceportMapping := i.processPortNames()
//Load WSDL file
w, err := i.wsdlLoadFile(*i.input)
if err != nil {
return fmt.Errorf("File load error: %v", err)
}
w.SetServicePortMapping(serviceportMapping)
if *i.createAPI {
//Create new API
def, err = w.ToAPIDefinition(*i.orgID, *i.upstreamTarget, *i.asMock)
if err != nil {
return fmt.Errorf("Failed to create API Defintition from file")
}
} else {
//Add into existing API
def, err = i.apiDefLoadFile(*i.forAPI)
if err != nil {
return fmt.Errorf("failed to load and decode file data for API Definition: %v", err)
}
versionData, err := w.ConvertIntoApiVersion(*i.asMock)
if err != nil {
return fmt.Errorf("Conversion into API Def failed: %v", err)
}
if err := w.InsertIntoAPIDefinitionAsVersion(versionData, def, *i.asVersion); err != nil {
return fmt.Errorf("Insertion failed: %v", err)
}
}
i.printDef(def)
return nil
}
func (i *Importer) printDef(def *apidef.APIDefinition) {
asJSON, err := json.MarshalIndent(def, "", " ")
if err != nil {
log.Error("Marshalling failed: ", err)
}
// The id attribute is for BSON only and breaks the parser if it's empty, cull it here.
fixed := strings.Replace(string(asJSON), ` "id": "",`, "", 1)
fmt.Println(fixed)
}
func (i *Importer) swaggerLoadFile(path string) (*importer.SwaggerAST, error) {
swagger, err := importer.GetImporterForSource(importer.SwaggerSource)
if err != nil {
return nil, err
}
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
if err := swagger.LoadFrom(f); err != nil {
return nil, err
}
return swagger.(*importer.SwaggerAST), nil
}
func (i *Importer) wsdlLoadFile(path string) (*importer.WSDLDef, error) {
wsdl, err := importer.GetImporterForSource(importer.WSDLSource)
if err != nil {
return nil, err
}
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
if err := wsdl.LoadFrom(f); err != nil {
return nil, err
}
return wsdl.(*importer.WSDLDef), nil
}
func (i *Importer) bluePrintLoadFile(path string) (*importer.BluePrintAST, error) {
blueprint, err := importer.GetImporterForSource(importer.ApiaryBluePrint)
if err != nil {
return nil, err
}
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
if err := blueprint.LoadFrom(f); err != nil {
return nil, err
}
return blueprint.(*importer.BluePrintAST), nil
}
func (i *Importer) apiDefLoadFile(path string) (*apidef.APIDefinition, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
def := &apidef.APIDefinition{}
if err := json.NewDecoder(f).Decode(&def); err != nil {
return nil, err
}
return def, nil
}