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results.go
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results.go
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package compute
import (
"fmt"
"html"
"regexp"
"strings"
)
var (
// IPython's output prefixes
outRE = regexp.MustCompile(`Out\[[\d\s]+\]:\s`)
// HTML tags
tagRE = regexp.MustCompile(`<[^>]*>`)
// just exception content without exception name
exceptionRE = regexp.MustCompile(`.*Exception:\s+(.*)`)
// execution errors resulting from http errors are sometimes hidden in these keys
executionErrorRE = regexp.MustCompile(`ExecutionError: ([\s\S]*)\n(StatusCode=[0-9]*)\n(StatusDescription=.*)\n`)
// usual error message explanation is hidden in this key
errorMessageRE = regexp.MustCompile(`ErrorMessage=(.+)\n`)
)
// Failed tells if command execution failed
func (r *Results) Failed() bool {
return r.ResultType == "error"
}
// Text returns plain text results
func (r *Results) Text() string {
if r.ResultType != "text" {
return ""
}
return outRE.ReplaceAllLiteralString(r.Data.(string), "")
}
// Err returns error type
func (r *Results) Err() error {
if !r.Failed() {
return nil
}
return fmt.Errorf(r.Error())
}
// Error returns error in a bit more friendly way
func (r *Results) Error() string {
if r.ResultType != "error" {
return ""
}
summary := tagRE.ReplaceAllLiteralString(r.Summary, "")
summary = html.UnescapeString(summary)
exceptionMatches := exceptionRE.FindStringSubmatch(summary)
if len(exceptionMatches) == 2 {
summary = strings.ReplaceAll(exceptionMatches[1], "; nested exception is:", "")
summary = strings.TrimRight(summary, " ")
return summary
}
executionErrorMatches := executionErrorRE.FindStringSubmatch(r.Cause)
if len(executionErrorMatches) == 4 {
return strings.Join(executionErrorMatches[1:], "\n")
}
errorMessageMatches := errorMessageRE.FindStringSubmatch(r.Cause)
if len(errorMessageMatches) == 2 {
return errorMessageMatches[1]
}
return summary
}
// Scan scans for results
// TODO: change API, also in terraform (databricks_sql_permissions)
// for now we're adding `pos` field artificially. this must be removed
// before this repo is public.
func (r *Results) Scan(dest ...any) bool {
if r.ResultType != ResultTypeTable {
return false
}
if rows, ok := r.Data.([]any); ok {
if r.Pos >= len(rows) {
return false
}
if cols, ok := rows[r.Pos].([]any); ok {
for i := range dest {
switch d := dest[i].(type) {
case *string:
*d = cols[i].(string)
case *int:
*d = cols[i].(int)
case *bool:
*d = cols[i].(bool)
}
}
r.Pos++
return true
}
}
return false
}