mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-21 08:39:46 +08:00
558 lines
16 KiB
C++
558 lines
16 KiB
C++
/*
|
|
* Copyright 2018, University Corporation for Atmospheric Research
|
|
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
|
|
*/
|
|
|
|
#define NOOP
|
|
|
|
#include "awsincludes.h"
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <iostream>
|
|
#include <streambuf>
|
|
#include "netcdf.h"
|
|
#include "zs3sdk.h"
|
|
|
|
#ifdef __CYGWIN__
|
|
extern char* strdup(const char*);
|
|
#endif
|
|
|
|
#define size64_t unsigned long long
|
|
|
|
static Aws::SDKOptions zs3options;
|
|
|
|
/* Forward */
|
|
static Aws::S3::Model::BucketLocationConstraint s3findregion(const char* name);
|
|
static int s3objectinfo1(const Aws::S3::Model::Object& s3_object, char** fullkeyp, size64_t* lenp);
|
|
static int s3objectsinfo(Aws::Vector<Aws::S3::Model::Object> list, size_t*, char*** keysp, size64_t** lenp);
|
|
static void freestringenvv(char** ss);
|
|
static int makes3key(const char* pathkey, const char** keyp);
|
|
|
|
#ifndef nullfree
|
|
#define nullfree(x) {if(x) {free(x);}}
|
|
#endif
|
|
|
|
void
|
|
NCZ_s3sdkinitialize(void)
|
|
{
|
|
// zs3options.loggingOptions.logLevel = Aws::Utils::Logging::LogLevel::Error;
|
|
Aws::InitAPI(zs3options);
|
|
}
|
|
|
|
void
|
|
NCZ_s3sdkfinalize(void)
|
|
{
|
|
Aws::ShutdownAPI(zs3options);
|
|
}
|
|
|
|
static char*
|
|
makeerrmsg(const Aws::Client::AWSError<Aws::S3::S3Errors> err, const char* key="")
|
|
{
|
|
char* errmsg;
|
|
size_t len;
|
|
len = strlen(err.GetExceptionName().c_str()) + strlen(err.GetMessage().c_str()) + strlen(key) + 10;
|
|
if((errmsg = (char*)malloc(len+1))==NULL)
|
|
return NULL;
|
|
snprintf(errmsg,len,"%s %s key=%s",
|
|
err.GetExceptionName().c_str(),
|
|
err.GetMessage().c_str(),
|
|
key);
|
|
return errmsg;
|
|
}
|
|
|
|
|
|
int
|
|
NCZ_s3sdkcreateconfig(const char* host, const char* region, void** configp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
Aws::Client::ClientConfiguration *config = new Aws::Client::ClientConfiguration();
|
|
config->scheme = Aws::Http::Scheme::HTTPS;
|
|
config->connectTimeoutMs = 30000;
|
|
config->requestTimeoutMs = 600000;
|
|
if(region) config->region = region;
|
|
if(host) config->endpointOverride = host;
|
|
config->enableEndpointDiscovery = true;
|
|
config->followRedirects = true;
|
|
if(configp) * configp = config;
|
|
return stat;
|
|
}
|
|
|
|
int
|
|
NCZ_s3sdkcreateclient(void* config0, void** clientp)
|
|
{
|
|
Aws::Client::ClientConfiguration* config = (Aws::Client::ClientConfiguration*) config0;
|
|
Aws::S3::S3Client *s3client
|
|
= new Aws::S3::S3Client(*config,
|
|
Aws::Client::AWSAuthV4Signer::PayloadSigningPolicy::RequestDependent,
|
|
false,
|
|
Aws::S3::US_EAST_1_REGIONAL_ENDPOINT_OPTION::NOT_SET
|
|
);
|
|
if(clientp) *clientp = (void*)s3client;
|
|
return NC_NOERR;
|
|
}
|
|
|
|
int
|
|
NCZ_s3sdkbucketexists(void* s3client0, const char* bucket, int* existsp, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
int exists = 0;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
|
|
if(errmsgp) *errmsgp = NULL;
|
|
auto result = s3client->ListBuckets();
|
|
if(!result.IsSuccess()) {
|
|
if(errmsgp) *errmsgp = makeerrmsg(result.GetError());
|
|
stat = NC_ES3;
|
|
} else {
|
|
Aws::Vector<Aws::S3::Model::Bucket> bucket_list = result.GetResult().GetBuckets();
|
|
for(auto const &awsbucket : bucket_list) {
|
|
auto name = awsbucket.GetName();
|
|
if(name == bucket) {exists = 1; break;}
|
|
}
|
|
}
|
|
if(existsp) *existsp = exists;
|
|
return stat;
|
|
}
|
|
|
|
int
|
|
NCZ_s3sdkbucketcreate(void* s3client0, const char* region, const char* bucket, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
if(errmsgp) *errmsgp = NULL;
|
|
const Aws::S3::Model::BucketLocationConstraint &awsregion = s3findregion(region);
|
|
if(awsregion == Aws::S3::Model::BucketLocationConstraint::NOT_SET)
|
|
return NC_EURL;
|
|
/* Set up the request */
|
|
Aws::S3::Model::CreateBucketRequest create_request;
|
|
create_request.SetBucket(bucket);
|
|
if(region) {
|
|
/* Specify the region as a location constraint */
|
|
Aws::S3::Model::CreateBucketConfiguration bucket_config;
|
|
bucket_config.SetLocationConstraint(awsregion);
|
|
create_request.SetCreateBucketConfiguration(bucket_config);
|
|
}
|
|
#ifdef NOOP
|
|
/* Create the bucket */
|
|
auto create_result = s3client->CreateBucket(create_request);
|
|
if(!create_result.IsSuccess()) {
|
|
if(errmsgp) *errmsgp = makeerrmsg(create_result.GetError());
|
|
stat = NC_ES3;;
|
|
}
|
|
#else
|
|
fprintf(stderr,"create bucket: %s\n",bucket); fflush(stderr);
|
|
#endif
|
|
|
|
return stat;
|
|
}
|
|
|
|
int
|
|
NCZ_s3sdkbucketdelete(void* s3client0, void* config0, const char* region, const char* bucket, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
Aws::Client::ClientConfiguration *config = (Aws::Client::ClientConfiguration*)config0;
|
|
|
|
if(errmsgp) *errmsgp = NULL;
|
|
const Aws::S3::Model::BucketLocationConstraint &awsregion = s3findregion(region);
|
|
if(awsregion == Aws::S3::Model::BucketLocationConstraint::NOT_SET)
|
|
return NC_EURL;
|
|
/* Set up the request */
|
|
Aws::S3::Model::DeleteBucketRequest request;
|
|
request.SetBucket(bucket);
|
|
if(region) {
|
|
config->region = region; // Will this work?
|
|
}
|
|
#ifdef NOOP
|
|
/* Delete the bucket */
|
|
auto result = s3client->DeleteBucket(request);
|
|
if(!result.IsSuccess()) {
|
|
if(errmsgp) *errmsgp = makeerrmsg(result.GetError());
|
|
stat = NC_ES3;;
|
|
}
|
|
#else
|
|
fprintf(stderr,"delete bucket: %s\n",bucket); fflush(stderr);
|
|
#endif
|
|
|
|
return stat;
|
|
}
|
|
|
|
/**************************************************/
|
|
/* Object API */
|
|
|
|
/*
|
|
@return NC_NOERR if key points to a content-bearing object.
|
|
@return NC_EEMPTY if object at key has no content.
|
|
@return NC_EXXX return true error
|
|
*/
|
|
int
|
|
NCZ_s3sdkinfo(void* s3client0, const char* bucket, const char* pathkey, size64_t* lenp, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
Aws::S3::Model::HeadObjectRequest head_request;
|
|
const char* key = NULL;
|
|
|
|
if(*pathkey != '/') return NC_EINTERNAL;
|
|
/* extract the true s3 key*/
|
|
if((stat = makes3key(pathkey,&key))) return stat;
|
|
|
|
if(errmsgp) *errmsgp = NULL;
|
|
head_request.SetBucket(bucket);
|
|
head_request.SetKey(key);
|
|
auto head_outcome = s3client->HeadObject(head_request);
|
|
if(head_outcome.IsSuccess()) {
|
|
long long l = head_outcome.GetResult().GetContentLength();
|
|
if(lenp) *lenp = (size64_t)l;
|
|
} else {
|
|
/* Distinquish not-found from other errors */
|
|
switch (head_outcome.GetError().GetErrorType()) {
|
|
case Aws::S3::S3Errors::RESOURCE_NOT_FOUND:
|
|
stat = NC_EEMPTY;
|
|
break;
|
|
case Aws::S3::S3Errors::ACCESS_DENIED:
|
|
stat = NC_EACCESS;
|
|
/* fall thru */
|
|
default:
|
|
if(!stat) stat = NC_ES3;
|
|
if(errmsgp) *errmsgp = makeerrmsg(head_outcome.GetError(),key);
|
|
break;
|
|
}
|
|
}
|
|
return (stat);
|
|
}
|
|
|
|
/* Define object key
|
|
@return NC_NOERR if success
|
|
@return NC_EXXX if fail
|
|
*/
|
|
int
|
|
NCZ_s3sdkcreatekey(void* s3client0, const char* bucket, const char* pathkey, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
const char* key = NULL;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
Aws::S3::Model::PutObjectRequest put_request;
|
|
|
|
if(*pathkey != '/') return NC_EINTERNAL;
|
|
if((stat = makes3key(pathkey,&key))) return stat;
|
|
|
|
if(errmsgp) *errmsgp = NULL;
|
|
put_request.SetBucket(bucket);
|
|
put_request.SetKey(key);
|
|
auto put_result = s3client->PutObject(put_request);
|
|
if(!put_result.IsSuccess()) {
|
|
if(errmsgp) *errmsgp = makeerrmsg(put_result.GetError(),key);
|
|
stat = NC_ES3;
|
|
}
|
|
return (stat);
|
|
}
|
|
|
|
/*
|
|
@return NC_NOERR if success
|
|
@return NC_EXXX if fail
|
|
*/
|
|
int
|
|
NCZ_s3sdkread(void* s3client0, const char* bucket, const char* pathkey, size64_t start, size64_t count, void* content, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
Aws::S3::Model::GetObjectRequest object_request;
|
|
char range[1024];
|
|
const char* key = NULL;
|
|
|
|
if(*pathkey != '/') return NC_EINTERNAL;
|
|
if((stat = makes3key(pathkey,&key))) return stat;
|
|
|
|
object_request.SetBucket(bucket);
|
|
object_request.SetKey(key);
|
|
snprintf(range,sizeof(range),"bytes=%llu-%llu",start,(start+count)-1);
|
|
object_request.SetRange(range);
|
|
auto get_object_result = s3client->GetObject(object_request);
|
|
if(!get_object_result.IsSuccess()) {
|
|
if(errmsgp) *errmsgp = makeerrmsg(get_object_result.GetError(),key);
|
|
stat = NC_ES3;
|
|
} else {
|
|
/* Get the whole result */
|
|
Aws::IOStream &result = get_object_result.GetResultWithOwnership().GetBody();
|
|
std::string str((std::istreambuf_iterator<char>(result)),std::istreambuf_iterator<char>());
|
|
/* Verify actual result size */
|
|
size_t slen = str.size();
|
|
if(slen > count) return NC_ES3;
|
|
const char* s = str.c_str();
|
|
if(content)
|
|
memcpy(content,s,slen);
|
|
}
|
|
return (stat);
|
|
}
|
|
|
|
/*
|
|
For S3, I can see no way to do a byterange write;
|
|
so we are effectively writing the whole object
|
|
*/
|
|
int
|
|
NCZ_s3sdkwriteobject(void* s3client0, const char* bucket, const char* pathkey, size64_t count, const void* content, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
const char* key = NULL;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
Aws::S3::Model::PutObjectRequest put_request;
|
|
|
|
if(*pathkey != '/') return NC_EINTERNAL;
|
|
if((stat = makes3key(pathkey,&key))) return stat;
|
|
|
|
if(errmsgp) *errmsgp = NULL;
|
|
put_request.SetBucket(bucket);
|
|
put_request.SetKey(key);
|
|
put_request.SetContentLength((long long)count);
|
|
|
|
std::shared_ptr<Aws::IOStream> data = std::shared_ptr<Aws::IOStream>(new Aws::StringStream());
|
|
data->rdbuf()->pubsetbuf((char*)content,count);
|
|
put_request.SetBody(data);
|
|
auto put_result = s3client->PutObject(put_request);
|
|
if(!put_result.IsSuccess()) {
|
|
if(errmsgp) *errmsgp = makeerrmsg(put_result.GetError(),key);
|
|
stat = NC_ES3;
|
|
}
|
|
return (stat);
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
@return NC_NOERR if success
|
|
@return NC_EXXX if fail
|
|
*/
|
|
int
|
|
NCZ_s3sdkreadobject(void* s3client0, const char* bucket, const char* pathkey, size64_t* sizep, void** contentp, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
Aws::S3::Model::GetObjectRequest object_request;
|
|
size64_t size, red;
|
|
void* content = NULL;
|
|
const char* key = NULL;
|
|
|
|
if(*pathkey != '/') return NC_EINTERNAL;
|
|
if((stat = makes3key(pathkey,&key))) return stat;
|
|
|
|
if(errmsgp) *errmsgp = NULL;
|
|
object_request.SetBucket(bucket);
|
|
object_request.SetKey(key);
|
|
auto get_result = s3client->GetObject(object_request);
|
|
if(!get_result.IsSuccess()) {
|
|
if(errmsgp) *errmsgp = makeerrmsg(get_result.GetError(),key);
|
|
stat = NC_ES3;
|
|
} else {
|
|
/* Get the size */
|
|
size = (size64_t)get_result.GetResult().GetContentLength();
|
|
/* Get the whole result */
|
|
Aws::IOStream &result = get_result.GetResultWithOwnership().GetBody();
|
|
#if 0
|
|
std::string str((std::istreambuf_iterator<char>(result)),std::istreambuf_iterator<char>());
|
|
red = str.length();
|
|
if((content = malloc(red))==NULL)
|
|
{stat = NC_ENOMEM; goto done;}
|
|
memcpy(content,str.c_str(),red);
|
|
#else
|
|
red = result.rdbuf()->pubseekoff(0,std::ios::ios_base::end);
|
|
result.rdbuf()->pubseekoff(0,std::ios::ios_base::beg); /* reset for reading */
|
|
if((content = malloc(red))==NULL)
|
|
stat = NC_ENOMEM;
|
|
else
|
|
result.rdbuf()->sgetn((char*)content,red);
|
|
#endif
|
|
if(!stat) {
|
|
/* Verify actual result size */
|
|
if(red != size) {stat = NC_ES3; goto done;}
|
|
if(sizep) *sizep = red;
|
|
if(contentp) {*contentp = content; content = NULL;}
|
|
}
|
|
}
|
|
done:
|
|
nullfree(content);
|
|
return (stat);
|
|
}
|
|
#endif /*0*/
|
|
|
|
int
|
|
NCZ_s3sdkclose(void* s3client0, void* config0, const char* bucket, const char* rootkey, int deleteit, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
Aws::Client::ClientConfiguration *config = (Aws::Client::ClientConfiguration*)config0;
|
|
if(deleteit) {
|
|
/* Delete the root key; ok it if does not exist */
|
|
switch (stat = NCZ_s3sdkdeletekey(s3client0,bucket,rootkey,errmsgp)) {
|
|
case NC_NOERR: break;
|
|
case NC_EEMPTY: case NC_ENOTFOUND: stat = NC_NOERR; break;
|
|
default: break;
|
|
}
|
|
}
|
|
delete s3client;
|
|
delete config;
|
|
return (stat);
|
|
}
|
|
|
|
/*
|
|
Return a list of keys for objects "below" a specified rootkey.
|
|
In theory, the returned list should be sorted in lexical order,
|
|
but it possible that it is not.
|
|
*/
|
|
int
|
|
NCZ_s3sdkgetkeys(void* s3client0, const char* bucket, const char* rootkey0, size_t* nkeysp, char*** keysp, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
size_t nkeys = 0;
|
|
const char* rootkey = NULL;
|
|
Aws::S3::Model::ListObjectsV2Request objects_request;
|
|
|
|
if(*rootkey0 != '/') return NC_EINTERNAL;
|
|
if((stat = makes3key(rootkey0,&rootkey))) return stat;
|
|
|
|
if(errmsgp) *errmsgp = NULL;
|
|
objects_request.SetBucket(bucket);
|
|
objects_request.SetPrefix(rootkey);
|
|
auto objects_outcome = s3client->ListObjectsV2(objects_request);
|
|
if(objects_outcome.IsSuccess()) {
|
|
Aws::Vector<Aws::S3::Model::Object> object_list =
|
|
objects_outcome.GetResult().GetContents();
|
|
nkeys = (size_t)object_list.size();
|
|
if(nkeysp) *nkeysp = nkeys;
|
|
stat = s3objectsinfo(object_list,NULL,keysp,NULL);
|
|
} else {
|
|
if(errmsgp) *errmsgp = makeerrmsg(objects_outcome.GetError());
|
|
stat = NC_ES3;
|
|
}
|
|
return stat;
|
|
}
|
|
|
|
int
|
|
NCZ_s3sdkdeletekey(void* s3client0, const char* bucket, const char* pathkey, char** errmsgp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
Aws::S3::S3Client* s3client = (Aws::S3::S3Client*)s3client0;
|
|
Aws::S3::Model::DeleteObjectRequest delete_request;
|
|
const char* key = NULL;
|
|
|
|
if(*pathkey != '/') return NC_EINTERNAL;
|
|
if((stat = makes3key(pathkey,&key))) return stat;
|
|
/* Delete this key object */
|
|
delete_request.SetBucket(bucket);
|
|
delete_request.SetKey(key);
|
|
auto delete_result = s3client->DeleteObject(delete_request);
|
|
if(!delete_result.IsSuccess()) {
|
|
if(errmsgp) *errmsgp = makeerrmsg(delete_result.GetError(),key);
|
|
stat = NC_ES3;
|
|
}
|
|
return stat;
|
|
}
|
|
|
|
/*
|
|
Get Info about a single object from a vector
|
|
*/
|
|
static int
|
|
s3objectinfo1(const Aws::S3::Model::Object& s3_object, char** fullkeyp, size64_t* lenp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
char* cstr = NULL;
|
|
|
|
if(fullkeyp) {
|
|
const char* key = NULL;
|
|
char* cstr = NULL;
|
|
auto s = s3_object.GetKey();
|
|
key = s.c_str();
|
|
if(key[0] == '/') {
|
|
cstr = strdup(key);
|
|
} else {
|
|
size_t len = strlen(key);
|
|
cstr = (char*)malloc(len+1+1);
|
|
if(cstr != NULL) {
|
|
cstr[0] = '/';
|
|
memcpy((void*)(cstr+1),(void*)key,len);
|
|
cstr[len+1] = '\0';
|
|
}
|
|
}
|
|
if(cstr == NULL) {
|
|
stat = NC_ENOMEM;
|
|
} else if(fullkeyp) {
|
|
*fullkeyp = cstr;
|
|
cstr = NULL;
|
|
}
|
|
}
|
|
if(!stat) {
|
|
if(lenp) *lenp = (size64_t)s3_object.GetSize();
|
|
}
|
|
nullfree(cstr);
|
|
return stat;
|
|
}
|
|
|
|
/*
|
|
Get Info about a vector of objects; Keys are fixed up to start with a '/'
|
|
*/
|
|
static int
|
|
s3objectsinfo(Aws::Vector<Aws::S3::Model::Object> list, size_t* nkeysp, char*** keysp, size64_t** lenp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
char** keys = NULL;
|
|
size_t nkeys;
|
|
size64_t *lengths = NULL;
|
|
int i;
|
|
|
|
nkeys = list.size();
|
|
if(nkeysp) *nkeysp = nkeys;
|
|
if((keys=(char**)calloc(sizeof(char*),(nkeys+1)))==NULL)
|
|
stat = NC_ENOMEM;
|
|
if(!stat) {
|
|
if((lengths=(size64_t*)calloc(sizeof(size64_t),(nkeys)))==NULL)
|
|
stat = NC_ENOMEM;
|
|
}
|
|
if(!stat) {
|
|
i = 0;
|
|
for (auto const &s3_object : list) {
|
|
stat = s3objectinfo1(s3_object,&keys[i],&lengths[i]);
|
|
i++;
|
|
if(stat) break;
|
|
}
|
|
}
|
|
if(!stat) {
|
|
if(keysp) {keys[nkeys] = NULL; *keysp = keys; keys = NULL;}
|
|
if(lenp) {*lenp = lengths; lengths = NULL;}
|
|
}
|
|
if(keys != NULL) freestringenvv(keys);
|
|
if(lengths != NULL) free(lengths);
|
|
return stat;
|
|
}
|
|
|
|
static Aws::S3::Model::BucketLocationConstraint
|
|
s3findregion(const char* name)
|
|
{
|
|
return Aws::S3::Model::BucketLocationConstraintMapper::GetBucketLocationConstraintForName(name);
|
|
}
|
|
|
|
struct MemBuf: std::streambuf {
|
|
MemBuf(char* base, size_t size) {
|
|
char* p(base);
|
|
this->setg(p, p, p + size);
|
|
}
|
|
};
|
|
|
|
static void
|
|
freestringenvv(char** ss)
|
|
{
|
|
char** p;
|
|
if(ss != NULL) {
|
|
for(p=ss;*p;p++)
|
|
nullfree(*p);
|
|
free(ss);
|
|
}
|
|
}
|
|
|
|
static int
|
|
makes3key(const char* pathkey, const char** keyp)
|
|
{
|
|
assert(pathkey != NULL && pathkey[0] == '/');
|
|
if(keyp) *keyp = pathkey+1;
|
|
return NC_NOERR;
|
|
}
|