forked from zambien/go-apigee-edge
/
apigee_edge.go
420 lines (365 loc) · 10.2 KB
/
apigee_edge.go
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// Package apigee provides a client for administering Apigee
package apigee
import (
"bytes"
"encoding/json"
"errors"
"fmt"
"io"
"io/ioutil"
"log"
"net/http"
"net/http/httputil"
"net/url"
"os"
"path"
"reflect"
//"strconv"
//"time"
"github.com/bgentry/go-netrc/netrc"
"github.com/google/go-querystring/query"
)
const (
appJson = "application/json"
defaultBaseURL = "https://api.enterprise.apigee.com/"
libraryVersion = "0.2.0"
octetStream = "application/octet-stream"
userAgent = "go-apigee-edge/" + libraryVersion
)
// RequestCompletionCallback defines the type of the request callback function
type RequestCompletionCallback func(*http.Request, *http.Response)
// ListOptions holds optional parameters to various List methods
type ListOptions struct {
// to ask for expanded results
Expand bool `url:"expand"`
}
func addOptions(s string, opt interface{}) (string, error) {
v := reflect.ValueOf(opt)
if v.Kind() == reflect.Ptr && v.IsNil() {
return s, nil
}
origURL, err := url.Parse(s)
if err != nil {
return s, err
}
origValues := origURL.Query()
newValues, err := query.Values(opt)
if err != nil {
return s, err
}
for k, v := range newValues {
origValues[k] = v
}
origURL.RawQuery = origValues.Encode()
return origURL.String(), nil
}
func retrieveAuthFromNetrc(netrcPath, host string) (*AdminAuth, error) {
if netrcPath == "" {
netrcPath = os.ExpandEnv("${HOME}/.netrc")
}
n, e := netrc.ParseFile(netrcPath)
if e != nil {
fmt.Printf("while parsing .netrc, error:\n%#v\n", e)
return nil, e
}
machine := n.FindMachine(host) // eg, "api.enterprise.apigee.com"
if machine == nil || machine.Password == "" {
msg := fmt.Sprintf("while scanning %s, cannot find machine:%s", netrcPath, host)
return nil, errors.New(msg)
}
auth := &AdminAuth{Username: machine.Login, Password: machine.Password}
return auth, nil
}
// NewApigeeClient returns a new ApigeeClient.
func NewApigeeClient(o *ApigeeClientOptions) (*ApigeeClient, error) {
httpClient := o.httpClient
if o.httpClient == nil {
httpClient = http.DefaultClient
}
mgmtUrl := o.MgmtUrl
if o.MgmtUrl == "" {
mgmtUrl = defaultBaseURL
}
baseURL, err := url.Parse(mgmtUrl)
if err != nil {
return nil, err
}
baseURL.Path = path.Join(baseURL.Path, "v1/o/", o.Org, "/")
c := &ApigeeClient{client: httpClient, BaseURL: baseURL, UserAgent: userAgent}
c.Caches = &CachesServiceOp{client: c}
c.Companies = &CompaniesServiceOp{client: c}
c.CompanyAppCredentials = &CompanyAppCredentialsServiceOp{client: c}
c.CompanyApps = &CompanyAppsServiceOp{client: c}
c.DeveloperApps = &DeveloperAppsServiceOp{client: c}
c.Developers = &DevelopersServiceOp{client: c}
c.Environments = &EnvironmentsServiceOp{client: c}
c.KeyValueMapEntries = &KeyValueMapEntriesServiceOp{client: c}
c.KeyValueMaps = &KeyValueMapsServiceOp{client: c}
c.Options = *o
c.Organization = &OrganizationServiceOp{client: c}
c.Products = &ProductsServiceOp{client: c}
c.Proxies = &ProxiesServiceOp{client: c}
c.SharedFlows = &SharedFlowsServiceOp{client: c}
c.TargetServers = &TargetServersServiceOp{client: c}
c.VirtualHosts = &VirtualHostsServiceOp{client: c}
var e error = nil
if o.Auth == nil {
c.auth, e = retrieveAuthFromNetrc("", baseURL.Host)
} else if o.Auth.Token != "" {
c.auth = &AdminAuth{Token: o.Auth.Token}
} else if o.Auth.Password == "" {
c.auth, e = retrieveAuthFromNetrc(o.Auth.NetrcPath, baseURL.Host)
} else {
c.auth = &AdminAuth{Username: o.Auth.Username, Password: o.Auth.Password}
}
c.LoginBaseUrl = o.LoginBaseUrl
c.WantToken = o.WantToken
if e != nil {
return nil, e
}
if o.Debug {
c.debug = true
c.onRequestCompleted = func(req *http.Request, resp *http.Response) {
debugDump(httputil.DumpResponse(resp, true))
}
}
return c, nil
}
// // ClientOpt are options for New.
// type ClientOpt func(*ApigeeClient) error
//
// // New returns a new instance of the client for the Apigee Edge Admin API
// func New(httpClient *http.Client, opts ...ClientOpt) (*ApigeeClient, error) {
// c := NewClient(httpClient)
// for _, opt := range opts {
// if err := opt(c); err != nil {
// return nil, err
// }
// }
//
// return c, nil
// }
//
// // SetBaseURL is a client option for setting the base URL.
// func SetBaseURL(baseurl string) ClientOpt {
// return func(c *Client) error {
// u, err := url.Parse(baseurl)
// if err != nil {
// return err
// }
//
// c.BaseURL = u
// return nil
// }
// }
//
// // SetUserAgent is a client option for adding a string to the user agent.
// func SetUserAgent(ua string) ClientOpt {
// return func(c *Client) error {
// c.UserAgent = fmt.Sprintf("%s+%s", ua, c.UserAgent)
// return nil
// }
// }
// NewRequest creates an API request. A relative URL can be provided in urlStr,
// which will be resolved to the BaseURL of the Client. Relative URLS should
// always be specified without a preceding slash. If specified, the value
// pointed to by body is JSON encoded and included in as the request body.
func (c *ApigeeClient) NewRequest(method, urlStr string, body interface{}) (*http.Request, error) {
rel, e := url.Parse(urlStr)
ctype := ""
if e != nil {
return nil, e
}
//fmt.Printf("BaseURL: %#v\n", c.BaseURL)
u := c.BaseURL.ResolveReference(rel)
// u, err := url.Parse(c.BaseURL)
// if err != nil {
// return nil,err
// }
//
// c.BaseURL = u
u.Path = path.Join(c.BaseURL.Path, rel.Path)
if c.debug {
fmt.Printf("u: %#v\n", u)
}
var req *http.Request
if body != nil {
switch body.(type) {
default:
ctype = appJson
buf := new(bytes.Buffer)
e := json.NewEncoder(buf).Encode(body)
if e != nil {
return nil, e
}
req, e = http.NewRequest(method, u.String(), buf)
case io.Reader:
ctype = octetStream
req, e = http.NewRequest(method, u.String(), body.(io.Reader))
}
} else {
req, e = http.NewRequest(method, u.String(), nil)
}
if e != nil {
return nil, e
}
if ctype != "" {
req.Header.Add("Content-Type", ctype)
}
req.Header.Add("Accept", appJson)
req.Header.Add("User-Agent", c.UserAgent)
if c.WantToken {
token, e := GetToken(c)
if e != nil {
return nil, e
}
c.auth.Token = *token.AccessToken
req.Header.Add("Authorization", "Bearer "+c.auth.Token)
} else {
req.SetBasicAuth(c.auth.Username, c.auth.Password)
}
return req, nil
}
// NewRequest creates an API request using application/x-www-form-urlencoded header.
func (c *ApigeeClient) NewDeployableRequest(method, urlStr string) (*http.Request, error) {
rel, e := url.Parse(urlStr)
if e != nil {
return nil, e
}
u := c.BaseURL.ResolveReference(rel)
// u, err := url.Parse(c.BaseURL)
// if err != nil {
// return nil,err
// }
//
// c.BaseURL = u
u.Path = path.Join(c.BaseURL.Path, rel.Path)
if c.debug {
fmt.Printf("u: %#v\n", u)
}
req, e := http.NewRequest(method, u.String(), nil)
if e != nil {
return nil, e
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
req.Header.Add("Accept", appJson)
req.Header.Add("User-Agent", c.UserAgent)
if c.WantToken {
token, e := GetToken(c)
if e != nil {
return nil, e
}
c.auth.Token = *token.AccessToken
req.Header.Add("Authorization", "Bearer "+c.auth.Token)
} else {
req.SetBasicAuth(c.auth.Username, c.auth.Password)
}
return req, nil
}
// sets the request completion callback for the API
func (c *ApigeeClient) OnRequestCompleted(rc RequestCompletionCallback) {
c.onRequestCompleted = rc
}
// newResponse creates a new Response for the provided http.Response
func newResponse(r *http.Response) *Response {
response := Response{Response: r}
return &response
}
func debugDump(data []byte, err error) {
if err == nil {
fmt.Printf("%s\n\n", data)
} else {
log.Fatalf("%s\n\n", err)
}
}
// Do sends an API request and returns the API response. The API response is
// JSON decoded and stored in the value pointed to by v, or returned as an error
// if an API error has occurred. If v implements the io.Writer interface, the
// raw response will be written to v, without attempting to decode it.
func (c *ApigeeClient) Do(req *http.Request, v interface{}) (*Response, error) {
if c.debug {
debugDump(httputil.DumpRequestOut(req, true))
}
resp, e := c.client.Do(req)
if e != nil {
return nil, e
}
if c.onRequestCompleted != nil {
c.onRequestCompleted(req, resp)
}
defer func() {
if error := resp.Body.Close(); e == nil {
e = error
}
}()
response := newResponse(resp)
e = CheckResponse(resp)
if e != nil {
return response, e
}
if v != nil {
if w, ok := v.(io.Writer); ok {
_, e := io.Copy(w, resp.Body)
if e != nil {
return nil, e
}
} else {
e := json.NewDecoder(resp.Body).Decode(v)
if e != nil {
return nil, e
}
}
}
return response, e
}
func (r *ErrorResponse) Error() string {
return fmt.Sprintf("%v %v: %d %v",
r.Response.Request.Method, r.Response.Request.URL, r.Response.StatusCode, r.Message)
}
// CheckResponse checks the API response for errors, and returns them if
// present. A response is considered an error if it has a status code outside
// the 200 range. API error responses are expected to have either no response
// body, or a JSON response body that maps to ErrorResponse. Any other response
// body will be silently ignored.
func CheckResponse(r *http.Response) error {
if c := r.StatusCode; c >= 200 && c <= 299 {
return nil
}
errorResponse := &ErrorResponse{Response: r}
data, err := ioutil.ReadAll(r.Body)
if err == nil && len(data) > 0 {
err := json.Unmarshal(data, errorResponse)
if err != nil {
return err
}
}
return errorResponse
}
// String is a helper routine that allocates a new string value
// to store v and returns a pointer to it.
func String(v string) *string {
p := new(string)
*p = v
return p
}
// Int is a helper routine that allocates a new int32 value
// to store v and returns a pointer to it, but unlike Int32
// its argument value is an int.
func Int(v int) *int {
p := new(int)
*p = v
return p
}
// Bool is a helper routine that allocates a new bool value
// to store v and returns a pointer to it.
func Bool(v bool) *bool {
p := new(bool)
*p = v
return p
}
// StreamToString converts a reader to a string
func StreamToString(stream io.Reader) string {
buf := new(bytes.Buffer)
_, _ = buf.ReadFrom(stream)
return buf.String()
}