Golang file.File类代码示例

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原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了Golang中github.com/mattes/migrate/file.File类的典型用法代码示例。如果您正苦于以下问题：Golang File类的具体用法？Golang File怎么用？Golang File使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了File类的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: Migrate

func (driver *Driver) Migrate(f file.File, pipe chan interface{}) {
	var err error
	defer func() {
		if err != nil {
			// Invert version direction if we couldn't apply the changes for some reason.
			if err := driver.version(f.Direction, true); err != nil {
				pipe <- err
			}
			pipe <- err
		}
		close(pipe)
	}()

	pipe <- f
	if err = driver.version(f.Direction, false); err != nil {
		return
	}

	if err = f.ReadContent(); err != nil {
		return
	}

	for _, query := range strings.Split(string(f.Content), ";") {
		query = strings.TrimSpace(query)
		if len(query) == 0 {
			continue
		}

		if err = driver.session.Query(query).Exec(); err != nil {
			return
		}
	}
}

开发者ID:raizyr，项目名称:migrate，代码行数:33，代码来源:cassandra.go

示例2: Migrate

func (driver *Driver) Migrate(f file.File, pipe chan interface{}) {
	defer close(pipe)
	pipe <- f

	if f.Direction == direction.Up {
		err := driver.session.Query("UPDATE "+tableName+" SET version = version + 1 where versionRow = ?", versionRow).Exec()
		if err != nil {
			pipe <- err
			return
		}
	} else if f.Direction == direction.Down {
		err := driver.session.Query("UPDATE "+tableName+" SET version = version - 1 where versionRow = ?", versionRow).Exec()
		if err != nil {
			pipe <- err
			return
		}
	}

	if err := f.ReadContent(); err != nil {
		pipe <- err
		return
	}

	err := driver.session.Query(string(f.Content)).Exec()

	if err != nil {
		pipe <- err
		return
	}
}

开发者ID:carriercomm，项目名称:empire，代码行数:30，代码来源:cassandra.go

示例3: Migrate

func (driver *Driver) Migrate(f file.File, pipe chan interface{}) {
	defer close(pipe)
	pipe <- f

	tx, err := driver.db.Begin()
	if err != nil {
		pipe <- err
		return
	}

	if f.Direction == direction.Up {
		if _, err := tx.Exec("INSERT INTO "+tableName+" (version) VALUES ($1)", f.Version); err != nil {
			pipe <- err
			if err := tx.Rollback(); err != nil {
				pipe <- err
			}
			return
		}
	} else if f.Direction == direction.Down {
		if _, err := tx.Exec("DELETE FROM "+tableName+" WHERE version=$1", f.Version); err != nil {
			pipe <- err
			if err := tx.Rollback(); err != nil {
				pipe <- err
			}
			return
		}
	}

	if err := f.ReadContent(); err != nil {
		pipe <- err
		return
	}

	if _, err := tx.Exec(string(f.Content)); err != nil {
		pqErr := err.(*pq.Error)
		offset, err := strconv.Atoi(pqErr.Position)
		if err == nil && offset >= 0 {
			lineNo, columnNo := file.LineColumnFromOffset(f.Content, offset-1)
			errorPart := file.LinesBeforeAndAfter(f.Content, lineNo, 5, 5, true)
			pipe <- errors.New(fmt.Sprintf("%s %v: %s in line %v, column %v:\n\n%s", pqErr.Severity, pqErr.Code, pqErr.Message, lineNo, columnNo, string(errorPart)))
		} else {
			pipe <- errors.New(fmt.Sprintf("%s %v: %s", pqErr.Severity, pqErr.Code, pqErr.Message))
		}

		if err := tx.Rollback(); err != nil {
			pipe <- err
		}
		return
	}

	if err := tx.Commit(); err != nil {
		pipe <- err
		return
	}
}

开发者ID:raizyr，项目名称:migrate，代码行数:55，代码来源:postgres.go

示例4: Migrate

func (driver *Driver) Migrate(f file.File, pipe chan interface{}) {
	defer close(pipe)
	pipe <- f

	tx, err := driver.db.Begin()
	if err != nil {
		pipe <- err
		return
	}

	if f.Direction == direction.Up {
		if _, err := tx.Exec("INSERT INTO "+tableName+" (version) VALUES (?)", f.Version); err != nil {
			pipe <- err
			if err := tx.Rollback(); err != nil {
				pipe <- err
			}
			return
		}
	} else if f.Direction == direction.Down {
		if _, err := tx.Exec("DELETE FROM "+tableName+" WHERE version=?", f.Version); err != nil {
			pipe <- err
			if err := tx.Rollback(); err != nil {
				pipe <- err
			}
			return
		}
	}

	if err := f.ReadContent(); err != nil {
		pipe <- err
		return
	}

	if _, err := tx.Exec(string(f.Content)); err != nil {
		sqliteErr, isErr := err.(sqlite3.Error)

		if isErr {
			// The sqlite3 library only provides error codes, not position information. Output what we do know
			pipe <- errors.New(fmt.Sprintf("SQLite Error (%s); Extended (%s)\nError: %s", sqliteErr.Code.Error(), sqliteErr.ExtendedCode.Error(), sqliteErr.Error()))
		} else {
			pipe <- errors.New(fmt.Sprintf("An error occurred: %s", err.Error()))
		}

		if err := tx.Rollback(); err != nil {
			pipe <- err
		}
		return
	}

	if err := tx.Commit(); err != nil {
		pipe <- err
		return
	}
}

开发者ID:bhcleek，项目名称:migrate，代码行数:54，代码来源:sqlite3.go

示例5: Migrate

func (d *Driver) Migrate(f file.File, pipe chan interface{}) {
	defer close(pipe)
	pipe <- f

	tx, err := d.conn.Begin()
	if err != nil {
		pipe <- err
		return
	}

	if f.Direction == direction.Up {
		if _, err := tx.Exec("INSERT INTO schema_migration (stamp, version) VALUES (now(), $1)", f.Version); err != nil {
			pipe <- err
			if err := tx.Rollback(); err != nil {
				pipe <- err
			}
			return
		}
	} else if f.Direction == direction.Down {
		if _, err := tx.Exec("DELETE FROM schema_migration WHERE version=$1", f.Version); err != nil {
			pipe <- err
			if err := tx.Rollback(); err != nil {
				pipe <- err
			}
			return
		}
	}

	if err := f.ReadContent(); err != nil {
		pipe <- err
		return
	}

	if _, err := tx.Exec(string(f.Content)); err != nil {
		pipe <- err
		if err := tx.Rollback(); err != nil {
			pipe <- err
		}
		return
	}

	if err := tx.Commit(); err != nil {
		pipe <- err
		return
	}
}

开发者ID:weaveworks，项目名称:flux，代码行数:46，代码来源:migration_driver.go

示例6: Migrate

func (driver *Driver) Migrate(f file.File, pipe chan interface{}) {
	defer close(pipe)
	pipe <- f

	// http://go-database-sql.org/modifying.html, Working with Transactions
	// You should not mingle the use of transaction-related functions such as Begin() and Commit() with SQL statements such as BEGIN and COMMIT in your SQL code.
	tx, err := driver.db.Begin()
	if err != nil {
		pipe <- err
		return
	}

	if f.Direction == direction.Up {
		if _, err := tx.Exec("INSERT INTO "+tableName+" (version) VALUES (?)", f.Version); err != nil {
			pipe <- err
			if err := tx.Rollback(); err != nil {
				pipe <- err
			}
			return
		}
	} else if f.Direction == direction.Down {
		if _, err := tx.Exec("DELETE FROM "+tableName+" WHERE version = ?", f.Version); err != nil {
			pipe <- err
			if err := tx.Rollback(); err != nil {
				pipe <- err
			}
			return
		}
	}

	if err := f.ReadContent(); err != nil {
		pipe <- err
		return
	}

	// TODO this is not good! unfortunately there is no mysql driver that
	// supports multiple statements per query.
	sqlStmts := bytes.Split(f.Content, []byte(";"))

	for _, sqlStmt := range sqlStmts {
		sqlStmt = bytes.TrimSpace(sqlStmt)
		if len(sqlStmt) > 0 {
			if _, err := tx.Exec(string(sqlStmt)); err != nil {
				mysqlErr, isErr := err.(*mysql.MySQLError)

				if isErr {
					re, err := regexp.Compile(`at line ([0-9]+)$`)
					if err != nil {
						pipe <- err
						if err := tx.Rollback(); err != nil {
							pipe <- err
						}
					}

					var lineNo int
					lineNoRe := re.FindStringSubmatch(mysqlErr.Message)
					if len(lineNoRe) == 2 {
						lineNo, err = strconv.Atoi(lineNoRe[1])
					}
					if err == nil {

						// get white-space offset
						// TODO this is broken, because we use sqlStmt instead of f.Content
						wsLineOffset := 0
						b := bufio.NewReader(bytes.NewBuffer(sqlStmt))
						for {
							line, _, err := b.ReadLine()
							if err != nil {
								break
							}
							if bytes.TrimSpace(line) == nil {
								wsLineOffset += 1
							} else {
								break
							}
						}

						message := mysqlErr.Error()
						message = re.ReplaceAllString(message, fmt.Sprintf("at line %v", lineNo+wsLineOffset))

						errorPart := file.LinesBeforeAndAfter(sqlStmt, lineNo, 5, 5, true)
						pipe <- errors.New(fmt.Sprintf("%s\n\n%s", message, string(errorPart)))
					} else {
						pipe <- errors.New(mysqlErr.Error())
					}

					if err := tx.Rollback(); err != nil {
						pipe <- err
					}

					return
				}
			}
		}
	}

	if err := tx.Commit(); err != nil {
		pipe <- err
		return
	}
//.........这里部分代码省略.........

开发者ID:raizyr，项目名称:migrate，代码行数:101，代码来源:mysql.go

注：本文中的github.com/mattes/migrate/file.File类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。