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azureblob: add --azureblob-no-check-container to assume container exists

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Normally rclone will check the container exists before uploading if it
hasn't listed the container yet.

Often rclone will be running with a limited set of permissions which
means rclone can't create the container anyway, so this stops the
check.

This will save a transaction.
This commit is contained in:
Nick Craig-Wood 2022-11-29 16:00:37 +00:00
parent 914fbe242c
commit f3c8b7a948
1 changed files with 14 additions and 1 deletions
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15
backend/azureblob/azureblob.go
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@ -314,6 +314,15 @@ This option controls how often unused buffers will be removed from the pool.`,
},
},
Advanced: true,
}, {
Name: "no_check_container",
Help: `If set, don't attempt to check the container exists or create it.
This can be useful when trying to minimise the number of transactions
rclone does if you know the container exists already.
`,
Default: false,
Advanced: true,
}, {
Name: "no_head_object",
Help: `If set, do not do HEAD before GET when getting objects.`,
@ -346,6 +355,7 @@ type Options struct {
MemoryPoolUseMmap bool `config:"memory_pool_use_mmap"`
Enc encoder.MultiEncoder `config:"encoding"`
PublicAccess string `config:"public_access"`
NoCheckContainer bool `config:"no_check_container"`
NoHeadObject bool `config:"no_head_object"`
}
@ -1191,6 +1201,9 @@ func (f *Fs) Mkdir(ctx context.Context, dir string) error {
// makeContainer creates the container if it doesn't exist
func (f *Fs) makeContainer(ctx context.Context, container string) error {
if f.opt.NoCheckContainer {
return nil
}
return f.cache.Create(container, func() error {
// If this is a SAS URL limited to a container then assume it is already created
if f.isLimited {
@ -1225,7 +1238,7 @@ func (f *Fs) makeContainer(ctx context.Context, container string) error {
case bloberror.AuthorizationFailure:
// Assume that the user does not have permission to
// create the container and carry on anyway.
fs.Debugf(f, "Tried to create container but got %s error - carrying on assuming container exists", storageErr.ErrorCode)
fs.Debugf(f, "Tried to create container but got %s error - carrying on assuming container exists. Use no_check_container to stop this check..", storageErr.ErrorCode)
return false, nil
}
}