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https.go
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https.go
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package https
import (
"context"
"fmt"
"net/http"
"net/url"
"time"
"github.com/mitchellh/mapstructure"
"github.com/rilldata/rill/runtime/drivers"
"github.com/rilldata/rill/runtime/pkg/activity"
"github.com/rilldata/rill/runtime/pkg/fileutil"
"go.uber.org/zap"
)
func init() {
drivers.Register("https", driver{})
drivers.RegisterAsConnector("https", driver{})
}
var spec = drivers.Spec{
DisplayName: "https",
Description: "Connect to a remote file.",
SourceProperties: []drivers.PropertySchema{
{
Key: "path",
DisplayName: "Path",
Description: "Path to the remote file.",
Placeholder: "https://example.com/file.csv",
Type: drivers.StringPropertyType,
Required: true,
},
},
}
type driver struct{}
func (d driver) Open(config map[string]any, shared bool, client activity.Client, logger *zap.Logger) (drivers.Handle, error) {
if shared {
return nil, fmt.Errorf("https driver can't be shared")
}
conn := &connection{
config: config,
logger: logger,
}
return conn, nil
}
func (d driver) Drop(config map[string]any, logger *zap.Logger) error {
return drivers.ErrDropNotSupported
}
func (d driver) Spec() drivers.Spec {
return spec
}
func (d driver) HasAnonymousSourceAccess(ctx context.Context, src map[string]any, logger *zap.Logger) (bool, error) {
return true, nil
}
func (d driver) TertiarySourceConnectors(ctx context.Context, src map[string]any, logger *zap.Logger) ([]string, error) {
return nil, nil
}
type sourceProperties struct {
Path string `mapstructure:"path"`
URI string `mapstructure:"uri"`
Headers map[string]string `mapstructure:"headers"`
}
func parseSourceProperties(props map[string]any) (*sourceProperties, error) {
conf := &sourceProperties{}
err := mapstructure.Decode(props, conf)
if err != nil {
return nil, err
}
// Backwards compatibility for "uri" renamed to "path"
if conf.URI != "" {
conf.Path = conf.URI
}
return conf, nil
}
type connection struct {
config map[string]any
logger *zap.Logger
}
var _ drivers.Handle = &connection{}
// Driver implements drivers.Connection.
func (c *connection) Driver() string {
return "https"
}
// Config implements drivers.Connection.
func (c *connection) Config() map[string]any {
return c.config
}
// Close implements drivers.Connection.
func (c *connection) Close() error {
return nil
}
// Registry implements drivers.Connection.
func (c *connection) AsRegistry() (drivers.RegistryStore, bool) {
return nil, false
}
// Catalog implements drivers.Connection.
func (c *connection) AsCatalogStore(instanceID string) (drivers.CatalogStore, bool) {
return nil, false
}
// Repo implements drivers.Connection.
func (c *connection) AsRepoStore(instanceID string) (drivers.RepoStore, bool) {
return nil, false
}
// OLAP implements drivers.Connection.
func (c *connection) AsOLAP(instanceID string) (drivers.OLAPStore, bool) {
return nil, false
}
// Migrate implements drivers.Connection.
func (c *connection) Migrate(ctx context.Context) (err error) {
return nil
}
// MigrationStatus implements drivers.Connection.
func (c *connection) MigrationStatus(ctx context.Context) (current, desired int, err error) {
return 0, 0, nil
}
// AsObjectStore implements drivers.Connection.
func (c *connection) AsObjectStore() (drivers.ObjectStore, bool) {
return nil, false
}
// AsTransporter implements drivers.Connection.
func (c *connection) AsTransporter(from, to drivers.Handle) (drivers.Transporter, bool) {
return nil, false
}
func (c *connection) AsFileStore() (drivers.FileStore, bool) {
return c, true
}
// AsSQLStore implements drivers.Connection.
func (c *connection) AsSQLStore() (drivers.SQLStore, bool) {
return nil, false
}
// FilePaths implements drivers.FileStore
func (c *connection) FilePaths(ctx context.Context, src map[string]any) ([]string, error) {
conf, err := parseSourceProperties(src)
if err != nil {
return nil, fmt.Errorf("failed to parse config: %w", err)
}
extension, err := urlExtension(conf.Path)
if err != nil {
return nil, fmt.Errorf("failed to parse path %s, %w", conf.Path, err)
}
req, err := http.NewRequestWithContext(ctx, http.MethodGet, conf.Path, http.NoBody)
if err != nil {
return nil, fmt.Errorf("failed to fetch url %s: %w", conf.Path, err)
}
for k, v := range conf.Headers {
req.Header.Set(k, v)
}
start := time.Now()
resp, err := http.DefaultClient.Do(req)
if err != nil {
return nil, fmt.Errorf("failed to fetch url %s: %w", conf.Path, err)
}
defer resp.Body.Close()
if resp.StatusCode < 200 || resp.StatusCode >= 300 {
return nil, fmt.Errorf("failed to fetch url %s: %s", conf.Path, resp.Status)
}
file, size, err := fileutil.CopyToTempFile(resp.Body, "", extension)
if err != nil {
return nil, err
}
// Collect metrics of download size and time
drivers.RecordDownloadMetrics(ctx, &drivers.DownloadMetrics{
Connector: "https",
Ext: extension,
Duration: time.Since(start),
Size: size,
})
return []string{file}, nil
}
func urlExtension(path string) (string, error) {
u, err := url.Parse(path)
if err != nil {
return "", err
}
return fileutil.FullExt(u.Path), nil
}