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transformer.go
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transformer.go
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package destination
import (
_ "encoding/json"
"errors"
"fmt"
"net/http"
_ "github.com/lib/pq"
"github.com/ory/dockertest/v3"
"github.com/ory/dockertest/v3/docker"
"github.com/rudderlabs/rudder-server/utils/httputil"
)
type TransformerResource struct {
TransformURL string
Port string
}
func SetupTransformer(pool *dockertest.Pool, d cleaner) (*TransformerResource, error) {
// Set Rudder Transformer
// pulls an image first to make sure we don't have an old cached version locally,
// then it creates a container based on it and runs it
err := pool.Client.PullImage(docker.PullImageOptions{
Repository: "rudderlabs/rudder-transformer",
Tag: "latest",
}, docker.AuthConfiguration{})
if err != nil {
return nil, fmt.Errorf("failed to pull image: %w", err)
}
transformerContainer, err := pool.RunWithOptions(&dockertest.RunOptions{
Repository: "rudderlabs/rudder-transformer",
Tag: "latest",
ExposedPorts: []string{"9090"},
Env: []string{
"CONFIG_BACKEND_URL=https://api.rudderstack.com",
},
})
if err != nil {
return nil, err
}
d.Cleanup(func() {
if err := pool.Purge(transformerContainer); err != nil {
d.Log("Could not purge resource:", err)
}
})
tr := &TransformerResource{
TransformURL: fmt.Sprintf("http://localhost:%s", transformerContainer.GetPort("9090/tcp")),
Port: transformerContainer.GetPort("9090/tcp"),
}
err = pool.Retry(func() (err error) {
resp, err := http.Get(tr.TransformURL + "/health")
if err != nil {
return err
}
defer func() { httputil.CloseResponse(resp) }()
if resp.StatusCode != 200 {
return errors.New(resp.Status)
}
return nil
})
if err != nil {
return nil, err
}
return tr, nil
}