ossreader

const (
	// OSS连接配置
	KeyEndpoint  = "endpoint"
	KeyAccessId  = "accessId"
	KeyAccessKey = "accessKey"
	KeyBucket    = "bucket"
	KeyObject    = "object"
	KeyCname     = "cname"

	// 文件处理配置
	KeyColumn         = "column"
	KeyFieldDelimiter = "fieldDelimiter"
	KeyCompress       = "compress"
	KeyEncoding       = "encoding"
	KeySkipHeader     = "skipHeader"
	KeyNullFormat     = "nullFormat"
	KeyDateFormat     = "dateFormat"
	KeyFileFormat     = "fileFormat"

	// 高级配置
	KeySuccessOnNoObject = "successOnNoObject"
	KeyProxyHost         = "proxyHost"
	KeyProxyPort         = "proxyPort"
	KeyProxyUsername     = "proxyUsername"
	KeyProxyPassword     = "proxyPassword"
	KeyProxyDomain       = "proxyDomain"
	KeyProxyWorkstation  = "proxyWorkstation"

	// 分片配置
	KeyBalanceThreshold = "balanceThreshold"

	// 默认值
	DefaultFileFormat        = "text"
	DefaultFieldDelimiter    = ","
	DefaultEncoding          = "UTF-8"
	DefaultNullFormat        = "\\N"
	DefaultCompress          = ""
	DefaultSkipHeader        = false
	DefaultSuccessOnNoObject = false
	DefaultBalanceThreshold  = 0.3

	// 分片阈值常量
	SingleFileSplitThresholdInSize = 1024 * 1024 * 1024 // 1GB
)