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adapter.go
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adapter.go
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package httppollersource
import (
"context"
"crypto/tls"
"crypto/x509"
"net/http"
cloudevents "github.com/cloudevents/sdk-go/v2"
"go.uber.org/zap"
pkgadapter "knative.dev/eventing/pkg/adapter/v2"
"knative.dev/pkg/logging"
"github.com/zeiss/typhoon/pkg/apis/sources"
)
// NewAdapter satisfies pkgadapter.AdapterConstructor.
func NewAdapter(ctx context.Context, envAcc pkgadapter.EnvConfigAccessor, ceClient cloudevents.Client) pkgadapter.Adapter {
logger := logging.FromContext(ctx)
mt := &pkgadapter.MetricTag{
ResourceGroup: sources.HTTPPollerSourceResource.String(),
Namespace: envAcc.GetNamespace(),
Name: envAcc.GetName(),
}
env := envAcc.(*envAccessor)
t := &http.Transport{
TLSClientConfig: &tls.Config{ // #nosec G402
InsecureSkipVerify: env.SkipVerify,
},
}
if env.CACertificate != "" {
certPool := x509.NewCertPool()
if !certPool.AppendCertsFromPEM([]byte(env.CACertificate)) {
logger.Panicf("Failed adding certificate to pool: %s", env.CACertificate)
}
t.TLSClientConfig = &tls.Config{
RootCAs: certPool,
MinVersion: tls.VersionTLS12,
}
}
httpClient := &http.Client{Transport: t}
httpRequest, err := http.NewRequest(env.Method, env.Endpoint, nil)
if err != nil {
logger.Panicw("Cannot build request", zap.Error(err))
}
for k, v := range env.Headers {
httpRequest.Header.Set(k, v)
}
if env.BasicAuthUsername != "" || env.BasicAuthPassword != "" {
httpRequest.SetBasicAuth(env.BasicAuthUsername, env.BasicAuthPassword)
}
return &httpPoller{
eventType: env.EventType,
eventSource: env.EventSource,
interval: env.Interval,
httpClient: httpClient,
httpRequest: httpRequest,
ceClient: ceClient,
logger: logger,
mt: mt,
}
}