greenplumn s3common_writer 代码
文件路径：/gpcontrib/gpcloud/include/s3common_writer.h
#ifndef INCLUDE_S3COMMON_WRITER_H_
#define INCLUDE_S3COMMON_WRITER_H_
#include "compress_writer.h"
#include "s3common_headers.h"
#include "s3key_writer.h"
#include "s3url.h"
class S3CommonWriter : public Writer {
public:
S3CommonWriter() : upstreamWriter(NULL), s3InterfaceService(NULL) {
}
virtual ~S3CommonWriter() {
this->close();
}
virtual void open(const S3Params& params);
/ write() attempts to write up to count bytes from the buffer.
/ Always return 0 if EOF, no matter how many times it's invoked. Throw exception if encounters
/ errors.
virtual uint64_t write(const char* buf, uint64_t count);
/ This should be reentrant, has no side effects when called multiple times.
virtual void close();
/ Used by Mock, DO NOT call it in other places.
void setS3InterfaceService(S3Interface* s3InterfaceService) {
this->s3InterfaceService = s3InterfaceService;
}
protected:
Writer* upstreamWriter;
S3Interface* s3InterfaceService;
S3KeyWriter keyWriter;
CompressWriter compressWriter;
};
#endif