136 lines
2.6 KiB
Go
136 lines
2.6 KiB
Go
package ingress
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import (
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"bytes"
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"context"
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"encoding/json"
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"net/http"
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"github.com/go-gost/core/ingress"
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"github.com/go-gost/core/logger"
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"github.com/go-gost/x/internal/plugin"
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)
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type httpPluginGetRuleRequest struct {
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Host string `json:"host"`
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}
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type httpPluginGetRuleResponse struct {
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Endpoint string `json:"endpoint"`
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}
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type httpPluginSetRuleRequest struct {
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Host string `json:"host"`
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Endpoint string `json:"endpoint"`
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}
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type httpPluginSetRuleResponse struct {
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OK bool `json:"ok"`
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}
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type httpPlugin struct {
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url string
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client *http.Client
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header http.Header
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log logger.Logger
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}
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// NewHTTPPlugin creates an Ingress plugin based on HTTP.
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func NewHTTPPlugin(name string, url string, opts ...plugin.Option) ingress.Ingress {
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var options plugin.Options
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for _, opt := range opts {
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opt(&options)
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}
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return &httpPlugin{
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url: url,
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client: plugin.NewHTTPClient(&options),
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header: options.Header,
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log: logger.Default().WithFields(map[string]any{
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"kind": "ingress",
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"ingress": name,
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}),
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}
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}
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func (p *httpPlugin) GetRule(ctx context.Context, host string, opts ...ingress.Option) *ingress.Rule {
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if p.client == nil {
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return nil
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodGet, p.url, nil)
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if err != nil {
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return nil
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}
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if p.header != nil {
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req.Header = p.header.Clone()
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}
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req.Header.Set("Content-Type", "application/json")
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q := req.URL.Query()
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q.Set("host", host)
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req.URL.RawQuery = q.Encode()
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resp, err := p.client.Do(req)
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if err != nil {
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return nil
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return nil
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}
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res := httpPluginGetRuleResponse{}
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if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
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return nil
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}
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if res.Endpoint == "" {
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return nil
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}
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return &ingress.Rule{
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Hostname: host,
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Endpoint: res.Endpoint,
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}
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}
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func (p *httpPlugin) SetRule(ctx context.Context, rule *ingress.Rule, opts ...ingress.Option) bool {
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if p.client == nil || rule == nil {
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return false
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}
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rb := httpPluginSetRuleRequest{
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Host: rule.Hostname,
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Endpoint: rule.Endpoint,
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}
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v, err := json.Marshal(&rb)
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if err != nil {
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return false
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}
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req, err := http.NewRequestWithContext(ctx, http.MethodPut, p.url, bytes.NewReader(v))
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if err != nil {
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return false
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}
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if p.header != nil {
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req.Header = p.header.Clone()
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}
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req.Header.Set("Content-Type", "application/json")
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resp, err := p.client.Do(req)
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if err != nil {
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return false
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return false
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}
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res := httpPluginSetRuleResponse{}
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if err := json.NewDecoder(resp.Body).Decode(&res); err != nil {
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return false
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}
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return res.OK
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}
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