{"record":{"id":"51052ce5ac6cffda","repo":"googleapis/mcp-toolbox","slug":"unable-to-create-pool-w-51052c","errorCode":null,"errorMessage":"unable to create pool: %w","messagePattern":"unable to create pool: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/sources/mysql/mysql.go","lineNumber":72,"sourceCode":"\tType         string            `yaml:\"type\" validate:\"required\"`\n\tHost         string            `yaml:\"host\" validate:\"required\"`\n\tPort         string            `yaml:\"port\" validate:\"required\"`\n\tUser         string            `yaml:\"user\"`\n\tPassword     string            `yaml:\"password\"`\n\tDatabase     string            `yaml:\"database\"`\n\tQueryTimeout string            `yaml:\"queryTimeout\"`\n\tQueryParams  map[string]string `yaml:\"queryParams\"`\n\tSQLCommenter *bool             `yaml:\"sqlCommenter\"`\n}\n\nfunc (r Config) SourceConfigType() string {\n\treturn SourceType\n}\n\nfunc (r Config) Initialize(ctx context.Context, tracer trace.Tracer) (sources.Source, error) {\n\tpool, err := initMySQLConnectionPool(ctx, tracer, r.Name, r.Host, r.Port, r.User, r.Password, r.Database, r.QueryTimeout, r.QueryParams)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"unable to create pool: %w\", err)\n\t}\n\n\terr = pool.PingContext(ctx)\n\tif err != nil {\n\t\tpool.Close()\n\t\treturn nil, fmt.Errorf(\"unable to connect successfully: %w\", err)\n\t}\n\n\ts := &Source{\n\t\tConfig: r,\n\t\tPool:   pool,\n\t}\n\treturn s, nil\n}\n\nvar _ sources.Source = &Source{}\n\ntype Source struct {","sourceCodeStart":54,"sourceCodeEnd":90,"githubUrl":"https://github.com/googleapis/mcp-toolbox/blob/8cc6e09de2ad7b8bffc77751799585a1401a48eb/internal/sources/mysql/mysql.go#L54-L90","documentation":"Error \"unable to create pool: %w\" thrown in googleapis/mcp-toolbox.","triggerScenarios":"Thrown at internal/sources/mysql/mysql.go:72 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"8cc6e09de2ad7b8bffc77751799585a1401a48eb","analyzedAt":"2026-09-05T01:10:36.887Z","contentChangedAt":"2026-09-05T01:10:36.887Z","schemaVersion":2},"datasetVersion":"2026-09-08T10:18:20.063Z"}