mirror of https://github.com/databricks/cli.git
114 lines
3.1 KiB
Go
114 lines
3.1 KiB
Go
package template
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import (
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"context"
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"errors"
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"fmt"
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"net/url"
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"regexp"
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"text/template"
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"github.com/databricks/cli/cmd/root"
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"github.com/databricks/cli/libs/auth"
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"github.com/databricks/databricks-sdk-go/service/iam"
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)
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type ErrFail struct {
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msg string
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}
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func (err ErrFail) Error() string {
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return err.msg
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}
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type pair struct {
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k string
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v any
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}
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var cachedUser *iam.User
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var cachedIsServicePrincipal *bool
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func loadHelpers(ctx context.Context) template.FuncMap {
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w := root.WorkspaceClient(ctx)
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return template.FuncMap{
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"fail": func(format string, args ...any) (any, error) {
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return nil, ErrFail{fmt.Sprintf(format, args...)}
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},
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// Alias for https://pkg.go.dev/net/url#Parse. Allows usage of all methods of url.URL
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"url": func(rawUrl string) (*url.URL, error) {
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return url.Parse(rawUrl)
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},
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// Alias for https://pkg.go.dev/regexp#Compile. Allows usage of all methods of regexp.Regexp
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"regexp": func(expr string) (*regexp.Regexp, error) {
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return regexp.Compile(expr)
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},
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// A key value pair. This is used with the map function to generate maps
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// to use inside a template
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"pair": func(k string, v any) pair {
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return pair{k, v}
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},
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// map converts a list of pairs to a map object. This is useful to pass multiple
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// objects to templates defined in the library directory. Go text template
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// syntax for invoking a template only allows specifying a single argument,
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// this function can be used to workaround that limitation.
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//
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// For example: {{template "my_template" (map (pair "foo" $arg1) (pair "bar" $arg2))}}
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// $arg1 and $arg2 can be referred from inside "my_template" as ".foo" and ".bar"
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"map": func(pairs ...pair) map[string]any {
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result := make(map[string]any, 0)
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for _, p := range pairs {
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result[p.k] = p.v
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}
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return result
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},
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// Get smallest node type (follows Terraform's GetSmallestNodeType)
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"smallest_node_type": func() (string, error) {
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if w.Config.Host == "" {
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return "", errors.New("cannot determine target workspace, please first setup a configuration profile using 'databricks auth login'")
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}
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if w.Config.IsAzure() {
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return "Standard_D3_v2", nil
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} else if w.Config.IsGcp() {
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return "n1-standard-4", nil
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}
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return "i3.xlarge", nil
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},
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"workspace_host": func() (string, error) {
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if w.Config.Host == "" {
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return "", errors.New("cannot determine target workspace, please first setup a configuration profile using 'databricks auth login'")
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}
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return w.Config.Host, nil
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},
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"user_name": func() (string, error) {
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if cachedUser == nil {
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var err error
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cachedUser, err = w.CurrentUser.Me(ctx)
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if err != nil {
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return "", err
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}
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}
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result := cachedUser.UserName
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if result == "" {
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result = cachedUser.Id
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}
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return result, nil
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},
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"is_service_principal": func() (bool, error) {
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if cachedIsServicePrincipal != nil {
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return *cachedIsServicePrincipal, nil
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}
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if cachedUser == nil {
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var err error
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cachedUser, err = w.CurrentUser.Me(ctx)
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if err != nil {
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return false, err
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}
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}
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result := auth.IsServicePrincipal(cachedUser.Id)
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cachedIsServicePrincipal = &result
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return result, nil
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},
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}
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}
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