Files
genai-toolbox/internal/testutils/testutils.go
Juexin Wang aa270b2630 feat: add the Gemini Data Analytics (GDA) integration for DB NL2SQL conversion to Toolbox (#2181)
## Description

This PR is to add the Gemini Data Analytics (GDA) integration for DB
NL2SQL conversion to Toolbox. It allows the user to convert a natural
language query to SQL statement based on their database instance. See
the doc section for details.

## PR Checklist

> Thank you for opening a Pull Request! Before submitting your PR, there
are a
> few things you can do to make sure it goes smoothly:

- [x] Make sure you reviewed

[CONTRIBUTING.md](https://github.com/googleapis/genai-toolbox/blob/main/CONTRIBUTING.md)
- [x] Make sure to open an issue as a

[bug/issue](https://github.com/googleapis/genai-toolbox/issues/new/choose)
  before writing your code! That way we can discuss the change, evaluate
  designs, and agree on the general idea
- [x] Ensure the tests and linter pass
- [x] Code coverage does not decrease (if any source code was changed)
- [x] Appropriate docs were updated (if necessary)
- [x] Make sure to add `!` if this involve a breaking change

🛠️ Fixes #2180

---------

Co-authored-by: Yuan Teoh <45984206+Yuan325@users.noreply.github.com>
2025-12-18 09:58:46 -08:00

113 lines
3.1 KiB
Go

// Copyright 2024 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package testutils
import (
"bufio"
"context"
"fmt"
"io"
"os"
"regexp"
"strings"
"github.com/googleapis/genai-toolbox/internal/log"
"github.com/googleapis/genai-toolbox/internal/util"
)
// formatYaml is a utility function for stripping out tabs in multiline strings
func FormatYaml(in string) []byte {
// removes any leading indentation(tabs)
in = strings.ReplaceAll(in, "\n\t", "\n ")
// converts remaining indentation
in = strings.ReplaceAll(in, "\t", " ")
return []byte(in)
}
// ContextWithNewLogger create a new context with new logger
func ContextWithNewLogger() (context.Context, error) {
ctx := context.Background()
logger, err := log.NewStdLogger(os.Stdout, os.Stderr, "info")
if err != nil {
return nil, fmt.Errorf("unable to create logger: %s", err)
}
return util.WithLogger(ctx, logger), nil
}
// ContextWithUserAgent creates a new context with a specified user agent string.
func ContextWithUserAgent(ctx context.Context, userAgent string) context.Context {
return util.WithUserAgent(ctx, userAgent)
}
// WaitForString waits until the server logs a single line that matches the provided regex.
// returns the output of whatever the server sent so far.
func WaitForString(ctx context.Context, re *regexp.Regexp, pr io.ReadCloser) (string, error) {
in := bufio.NewReader(pr)
ctx, cancel := context.WithCancel(ctx)
defer cancel()
// read lines in background, sending result of each read over a channel
// this allows us to use in.ReadString without blocking
type result struct {
s string
err error
}
output := make(chan result)
go func() {
defer close(output)
for {
select {
case <-ctx.Done():
// if the context is canceled, the orig thread will send back the error
// so we can just exit the goroutine here
return
default:
// otherwise read a line from the output
s, err := in.ReadString('\n')
if err != nil {
output <- result{err: err}
return
}
output <- result{s: s}
// if that last string matched, exit the goroutine
if re.MatchString(s) {
return
}
}
}
}()
// collect the output until the ctx is canceled, an error was hit,
// or match was found (which is indicated the channel is closed)
var sb strings.Builder
for {
select {
case <-ctx.Done():
// if ctx is done, return that error
return sb.String(), ctx.Err()
case o, ok := <-output:
if !ok {
// match was found!
return sb.String(), nil
}
if o.err != nil {
// error was found!
return sb.String(), o.err
}
sb.WriteString(o.s)
}
}
}