int main(int argc, char** args)
{
if (3 > argc){
usage();
return 1;
}
const char* bucketName = args[1];
const char* key = args[2];
S3Protocol protocolG = S3ProtocolHTTP;
const char* accessKeyIdG = getenv("S3_ACCESS_KEY_ID");
const char* secretAccessKeyG = getenv("S3_SECRET_ACCESS_KEY");
S3Status status;
const char* hostname = getenv("S3_HOSTNAME");
if ((status = S3_initialize("s3", S3_INIT_ALL, hostname)) != S3StatusOK)
{
fprintf(stdout, "Failed to initialize libs3: %s\n", S3_get_status_name(status));
exit(-1);
}
S3BucketContext bucketContext =
{
0,
bucketName,
protocolG,
S3UriStylePath,
accessKeyIdG,
secretAccessKeyG,
0
};
S3ResponseHandler responseHandler = { &responsePropertiesCallback,
&responseCompleteCallback
};
//----------------------check whether object is exist-----------------//
S3_head_object(&bucketContext, key, 0, &responseHandler, 0);
S3_deinitialize();
return 0;
}
static int ct_archive_data(struct hsm_copyaction_private *hcp, const char *src,
const char *dst, int src_fd,
const struct hsm_action_item *hai, long hal_flags)
{
struct hsm_extent he;
__u64 file_offset = hai->hai_extent.offset;
struct stat src_st;
char *uncompress_buf = NULL;
char *compress_buf = NULL;
__u64 write_total = 0;
__u64 length = hai->hai_extent.length;
time_t last_report_time;
int rc = 0;
double start_ct_now = ct_now();
time_t now;
int compression_bound = LZ4_compressBound(chunk_size);
// Archiving a file from Lustre to the object store
CT_TRACE("Archiving %s to %s", src, dst);
if (fstat(src_fd, &src_st) < 0) {
rc = -errno;
CT_ERROR(rc, "cannot stat '%s'", src);
return rc;
}
if (!S_ISREG(src_st.st_mode)) {
rc = -EINVAL;
CT_ERROR(rc, "'%s' is not a regular file", src);
return rc;
}
if (hai->hai_extent.offset > (__u64)src_st.st_size) {
rc = -EINVAL;
CT_ERROR(rc, "Trying to start reading past end ("LPU64" > "
"%jd) of '%s' source file", hai->hai_extent.offset,
(intmax_t)src_st.st_size, src);
return rc;
}
strippingInfo stripping_params;
stripping_params.lmm_stripe_count = 1;
stripping_params.lmm_stripe_size = ONE_MB;
if (ct_save_stripe(src_fd, src, &stripping_params)) {
return -1;
}
/* Don't read beyond a given extent */
if (length > src_st.st_size - hai->hai_extent.offset)
length = src_st.st_size - hai->hai_extent.offset;
last_report_time = time(NULL);
he.offset = file_offset;
he.length = 0;
rc = llapi_hsm_action_progress(hcp, &he, length, 0);
if (rc < 0) {
/* Action has been canceled or something wrong
* is happening. Stop copying data. */
CT_ERROR(rc, "progress ioctl for copy '%s'->'%s' failed",
src, dst);
goto out;
}
errno = 0;
uncompress_buf = malloc(chunk_size);
if (uncompress_buf == NULL) {
rc = -ENOMEM;
goto out;
}
compress_buf = malloc(compression_bound);
if (compress_buf == NULL) {
rc = -ENOMEM;
goto out;
}
int chunk_id = -1;
const char totalLength[] = "totallength";
const char chunksize[] = "chunksize";
const char stripe_size[] = "stripesize";
const char stripe_count[] = "stripecount";
const char path[] = "path";
const char uid[] = "uid";
const char gid[] = "gid";
char totalLength_s[TOTALLENGTH];
char chunksize_s[TOTALLENGTH];
char stripe_size_s[TOTALLENGTH];
char stripe_count_s[TOTALLENGTH];
char path_s[PATH_MAX];
char uid_s[TOTALLENGTH];
char gid_s[TOTALLENGTH];
snprintf(totalLength_s, sizeof(totalLength_s), "%llu", length);
snprintf(chunksize_s, sizeof(chunksize_s), "%i", chunk_size);
snprintf(stripe_size_s, sizeof(stripe_size_s), "%i", stripping_params.lmm_stripe_size);
snprintf(stripe_count_s, sizeof(stripe_count_s), "%i", stripping_params.lmm_stripe_count);
snprintf(path_s, sizeof(path_s), "%s", src); // FIXME should use fid2path to get the normal path
snprintf(uid_s, sizeof(uid_s), "%i", src_st.st_uid);
snprintf(gid_s, sizeof(gid_s), "%i", src_st.st_gid);
// Saving some metadata for disaster recovery
S3NameValue metadata[7] =
{
{
totalLength,
totalLength_s,
},
{
chunksize,
chunksize_s,
},
{
stripe_size,
stripe_size_s,
},
{
stripe_count,
stripe_count_s,
},
{
path,
path_s
},
{
uid,
uid_s
},
{
gid,
gid_s
}
};
S3PutProperties putProperties =
{
// application/x-lz4 does not officially exist
"application/x-lz4", // contentType
NULL, // md5
NULL, // cacheControl
NULL, // contentDispositionFilename
NULL, // contentEncoding
-1, // expires
0, // cannedAcl
sizeof(metadata) / sizeof(S3NameValue), // metaDataCount
metadata, // S3NameValue *metaData
0, // useServerSideEncryption
};
do {
// Uploading to object store
if (chunk_id == -1) {
CT_TRACE("start copy of "LPU64" bytes from '%s' to '%s'",
length, src, dst);
}
// size of the current chunk, limited by chunk_size
long long unsigned int chunk;
if (length - write_total > chunk_size) {
// upper bound is the chunk_size
chunk = chunk_size;
}
else {
// limited by the file
chunk = length - write_total;
}
chunk_id = file_offset / chunk_size;
put_object_callback_data data;
data.buffer_offset = 0;
double before_lustre_read = ct_now();
pread(src_fd, uncompress_buf, chunk, file_offset);
CT_TRACE("Reading a chunk from %s of %llu bytes offset %llu from lustre took %fs",
src, chunk, file_offset, ct_now() - before_lustre_read);
double before_compression = ct_now();
int compressed_size = LZ4_compress_default(uncompress_buf, compress_buf, chunk, compression_bound);
CT_TRACE("Compressing a chunk from %s took %fs and the compressed size is %i bytes",
src, ct_now() - before_compression, compressed_size);
if (compressed_size <= 0) {
rc = -1;
CT_ERROR(rc, "Compression error");
goto out;
}
data.contentLength = compressed_size;
data.buffer = compress_buf;
S3PutObjectHandler putObjectHandler =
{
putResponseHandler,
&putObjectDataCallback
};
char dst_chunk_s[S3_MAX_KEY_SIZE];
snprintf(dst_chunk_s, sizeof(dst_chunk_s), "%s.%i", dst, chunk_id);
char bucket_name[S3_MAX_BUCKET_NAME_SIZE];
getBucketName(sizeof(bucket_name), bucket_name, dst_chunk_s);
// Get a local copy of the general bucketContext than overwrite the
// pointer to the bucket_name
S3BucketContext localbucketContext;
memcpy(&localbucketContext, &bucketContext, sizeof(S3BucketContext));
localbucketContext.bucketName = bucket_name;
double before_s3_put = ct_now();
int retry_count = RETRYCOUNT;
do {
S3_put_object(&localbucketContext, dst_chunk_s, compressed_size, &putProperties, NULL, &putObjectHandler, &data);
} while (S3_status_is_retryable(data.status) && should_retry(&retry_count));
CT_TRACE("S3 put of %s took %fs",
dst_chunk_s, ct_now() - before_s3_put);
if (data.status != S3StatusOK) {
rc = -EIO;
CT_ERROR(rc, "S3Error %s", S3_get_status_name(data.status));
goto out;
}
he.offset = file_offset;
he.length = chunk;
now = time(NULL);
if (now >= last_report_time + ct_opt.o_report_int) {
last_report_time = now;
CT_TRACE("sending progress report for archiving %s", src);
rc = llapi_hsm_action_progress(hcp, &he, length, 0);
if (rc < 0) {
/* Action has been canceled or something wrong
* is happening. Stop copying data. */
CT_ERROR(rc, "progress ioctl for copy '%s'->'%s' failed",
src, dst);
goto out;
}
}
write_total += chunk;
file_offset += chunk;
} while (file_offset < length);
rc = 0;
// We need to delete every chunk of higher chunk_id if they
// exists, this can happen if the new file is smaller
// TODO only delete objects if this is a dirty write
chunk_id += 1;
do {
char dst_s[S3_MAX_KEY_SIZE];
int retry_count;
snprintf(dst_s, sizeof(dst_s), "%s.%i", dst, chunk_id);
get_object_callback_data head_data;
get_object_callback_data delete_data;
char bucket_name[S3_MAX_BUCKET_NAME_SIZE];
getBucketName(sizeof(bucket_name), bucket_name, dst_s);
// Get a local copy of the general bucketContext than overwrite the
// pointer to the bucket_name
S3BucketContext localbucketContext;
memcpy(&localbucketContext, &bucketContext, sizeof(S3BucketContext));
localbucketContext.bucketName = bucket_name;
CT_TRACE("Checking if chunk %i exists", chunk_id);
retry_count = RETRYCOUNT;
do {
S3_head_object(&localbucketContext, dst_s, NULL, &headResponseHandler, &head_data);
} while (S3_status_is_retryable(head_data.status) && should_retry(&retry_count));
if (head_data.status == S3StatusHttpErrorNotFound) {
// Object do not exist, this mean we stop deleting chunks
CT_TRACE("Chunk %i do not exists", chunk_id);
break;
}
if (head_data.status != S3StatusOK) {
rc = -EIO;
CT_ERROR(rc, "S3Error %s", S3_get_status_name(head_data.status));
goto out;
}
CT_TRACE("Deleting chunk %i", chunk_id);
retry_count = RETRYCOUNT;
do {
S3_delete_object(&localbucketContext, dst_s, NULL, &deleteResponseHandler, &delete_data);
} while (S3_status_is_retryable(delete_data.status) && should_retry(&retry_count));
if (delete_data.status != S3StatusOK) {
rc = -EIO;
CT_ERROR(rc, "S3Error %s", S3_get_status_name(delete_data.status));
goto out;
}
chunk_id++;
} while (true);
out:
if (uncompress_buf != NULL)
free(uncompress_buf);
if (compress_buf != NULL)
free(compress_buf);
CT_TRACE("copied "LPU64" bytes in %f seconds",
length, ct_now() - start_ct_now);
return rc;
}
static int ct_restore_data(struct hsm_copyaction_private *hcp, const char *src,
const char *dst, int dst_fd,
const struct hsm_action_item *hai, long hal_flags)
{
struct hsm_extent he;
__u64 file_offset = hai->hai_extent.offset;
struct stat dst_st;
__u64 write_total = 0;
__u64 length = hai->hai_extent.length;
time_t last_report_time;
time_t now;
int rc = 0;
double start_ct_now = ct_now();
// Restore a file from the object store back to Lustre
CT_TRACE("Restoring %s to %s", src, dst);
if (fstat(dst_fd, &dst_st) < 0) {
rc = -errno;
CT_ERROR(rc, "cannot stat '%s'", dst);
return rc;
}
if (!S_ISREG(dst_st.st_mode)) {
rc = -EINVAL;
CT_ERROR(rc, "'%s' is not a regular file", dst);
return rc;
}
he.offset = file_offset;
he.length = 0;
rc = llapi_hsm_action_progress(hcp, &he, length, 0);
if (rc < 0) {
/* Action has been canceled or something wrong
* is happening. Stop copying data. */
CT_ERROR(rc, "progress ioctl for copy '%s'->'%s' failed",
src, dst);
goto out;
}
errno = 0;
last_report_time = time(NULL);
long long int object_chunk_size = chunk_size; // will be assigned the correct value based on the metadata
do {
// Downloading from the object store
char src_chunk_s[S3_MAX_KEY_SIZE];
S3GetObjectHandler getObjectHandler =
{
getResponseHandler,
&getObjectDataCallback
};
if (length == -1) {
// Discover length and chunk size from the first object's metadata
snprintf(src_chunk_s, sizeof(src_chunk_s), "%s.0", src);
if (file_offset == 0) {
// Download data and metadata from the first chunk
get_object_callback_data data;
rc = get_s3_object(src_chunk_s, &data, &getObjectHandler);
if(rc < 0){
goto out;
}
length = data.totalLength;
object_chunk_size = data.chunk_size;
char *uncompress_buf = NULL;
uncompress_buf = malloc(object_chunk_size);
if (uncompress_buf == NULL) {
rc = -ENOMEM;
goto out;
}
double before_decompression = ct_now();
int decompressed_size = LZ4_decompress_safe(data.buffer, uncompress_buf, data.contentLength, object_chunk_size);
if (decompressed_size < 0) {
rc = -1;
CT_ERROR(rc, "Decompression error");
goto out;
}
CT_TRACE("Decompressing a chunk from %s of %llu bytes took %fs and the uncompressed size is %i bytes",
src, data.contentLength, ct_now() - before_decompression, decompressed_size);
double before_lustre_write = ct_now();
pwrite(dst_fd, uncompress_buf, decompressed_size, file_offset);
CT_TRACE("Writing a chunk from %s of %llu bytes offset %llu to lustre took %fs",
src_chunk_s, object_chunk_size, file_offset, ct_now() - before_lustre_write);
if (uncompress_buf != NULL)
free(uncompress_buf);
if (data.buffer != NULL)
free(data.buffer);
write_total = decompressed_size;
file_offset += decompressed_size;
he.offset = file_offset;
he.length = data.contentLength;
rc = llapi_hsm_action_progress(hcp, &he, length, 0);
if (rc < 0) {
/* Action has been canceled or something wrong
* is happening. Stop copying data. */
CT_ERROR(rc, "progress ioctl for copy '%s'->'%s' failed",
src, dst);
goto out;
}
if (write_total == length) {
// Completed the full write with the first object
rc = 0;
break;
}
}
else {
// Only make a head request to get the metadata of the first object
get_object_callback_data data;
char bucket_name[S3_MAX_BUCKET_NAME_SIZE];
getBucketName(sizeof(bucket_name), bucket_name, src_chunk_s);
// Get a local copy of the general bucketContext than overwrite the
// pointer to the bucket_name
S3BucketContext localbucketContext;
memcpy(&localbucketContext, &bucketContext, sizeof(S3BucketContext));
localbucketContext.bucketName = bucket_name;
int retry_count = RETRYCOUNT;
do {
S3_head_object(&localbucketContext, src_chunk_s, NULL, &headResponseHandler, &data);
} while (S3_status_is_retryable(data.status) && should_retry(&retry_count));
if (data.status != S3StatusOK) {
rc = -EIO;
CT_ERROR(rc, "S3Error %s", S3_get_status_name(data.status));
goto out;
}
object_chunk_size = data.chunk_size;
length = data.totalLength;
}
}
else {
snprintf(src_chunk_s, sizeof(src_chunk_s), "%s.%llu", src, file_offset / object_chunk_size);
long long unsigned int chunk;
if (length - write_total > object_chunk_size) {
// upper bound is the chunk_size
chunk = object_chunk_size;
}
else {
// limited by the file
chunk = length - write_total;
}
get_object_callback_data data;
rc = get_s3_object(src_chunk_s, &data, &getObjectHandler);
if(rc < 0){
goto out;
}
char *uncompress_buf = NULL;
uncompress_buf = malloc(object_chunk_size);
if (uncompress_buf == NULL) {
rc = -ENOMEM;
goto out;
}
double before_decompression = ct_now();
int decompressed_size = LZ4_decompress_safe(data.buffer, uncompress_buf, data.contentLength, object_chunk_size);
if (decompressed_size < 0) {
rc = -1;
CT_ERROR(rc, "Decompression error");
goto out;
}
CT_TRACE("Decompressing a chunk from %s of %llu bytes took %fs and the uncompressed size is %i",
src, data.contentLength, ct_now() - before_decompression, decompressed_size);
double before_lustre_write = ct_now();
pwrite(dst_fd, uncompress_buf, decompressed_size, file_offset);
CT_TRACE("Writing a chunk from %s of %llu bytes offset %llu to lustre took %fs",
src_chunk_s, chunk, file_offset, ct_now() - before_lustre_write);
if (uncompress_buf != NULL)
free(uncompress_buf);
if (data.buffer != NULL)
free(data.buffer);
now = time(NULL);
if (now >= last_report_time + ct_opt.o_report_int) {
last_report_time = now;
CT_TRACE("sending progress report for restoring %s", src);
rc = llapi_hsm_action_progress(hcp, &he, length, 0);
if (rc < 0) {
/* Action has been canceled or something wrong
* is happening. Stop copying data. */
CT_ERROR(rc, "progress ioctl for copy '%s'->'%s' failed",
src, dst);
goto out;
}
}
write_total += decompressed_size;
file_offset += decompressed_size;
}
rc = 0;
} while (file_offset < length);
if (hai->hai_action == HSMA_RESTORE) {
/*
* truncate restored file
* size is taken from the archive this is done to support
* restore after a force release which leaves the file with the
* wrong size (can big bigger than the new size)
* make sure the file is on disk before reporting success.
*/
rc = ftruncate(dst_fd, length);
if (rc < 0) {
rc = -errno;
CT_ERROR(rc, "cannot truncate '%s' to size %llu",
dst, length);
err_major++;
}
}
out:
CT_TRACE("copied "LPU64" bytes in %f seconds",
length, ct_now() - start_ct_now);
return rc;
}
int ct_remove(const struct hsm_action_item *hai, const long hal_flags)
{
struct hsm_copyaction_private *hcp = NULL;
char dst[PATH_MAX];
int rc;
int retry_count;
char dst_s[S3_MAX_KEY_SIZE];
rc = ct_begin(&hcp, hai);
if (rc < 0)
goto end_ct_remove;
ct_path_archive(dst, sizeof(dst), &hai->hai_fid);
CT_TRACE("removing file '%s'", dst);
if (ct_opt.o_dry_run) {
rc = 0;
goto end_ct_remove;
}
// Get the metadata from the first object to get the number of chunks
get_object_callback_data data;
snprintf(dst_s, sizeof(dst_s), "%s.0", dst);
char bucket_name[S3_MAX_BUCKET_NAME_SIZE];
getBucketName(sizeof(bucket_name), bucket_name, dst_s);
// Get a local copy of the general bucketContext than overwrite the
// pointer to the bucket_name
S3BucketContext localbucketContext;
memcpy(&localbucketContext, &bucketContext, sizeof(S3BucketContext));
localbucketContext.bucketName = bucket_name;
retry_count = RETRYCOUNT;
do {
S3_head_object(&localbucketContext, dst_s, NULL, &headResponseHandler, &data);
} while (S3_status_is_retryable(data.status) && should_retry(&retry_count));
if (data.status != S3StatusOK) {
rc = -EIO;
CT_ERROR(rc, "S3Error %s", S3_get_status_name(data.status));
goto end_ct_remove;
}
int chunk;
for (chunk = data.totalLength / data.chunk_size; chunk >= 0; chunk--) {
snprintf(dst_s, sizeof(dst_s), "%s.%i", dst, chunk);
get_object_callback_data delete_data;
CT_TRACE("Deleting chunk '%s'", dst_s);
char bucket_name[S3_MAX_BUCKET_NAME_SIZE];
getBucketName(sizeof(bucket_name), bucket_name, dst_s);
// Get a local copy of the general bucketContext than overwrite the
// pointer to the bucket_name
S3BucketContext localbucketContext;
memcpy(&localbucketContext, &bucketContext, sizeof(S3BucketContext));
localbucketContext.bucketName = bucket_name;
retry_count = RETRYCOUNT;
do {
S3_delete_object(&localbucketContext, dst_s, NULL, &deleteResponseHandler, &delete_data);
} while (S3_status_is_retryable(delete_data.status) && should_retry(&retry_count));
if (delete_data.status != S3StatusOK) {
rc = -EIO;
CT_ERROR(rc, "S3Error %s", S3_get_status_name(delete_data.status));
goto end_ct_remove;
}
}
rc = 0;
end_ct_remove:
rc = ct_action_done(&hcp, hai, 0, rc);
return rc;
}