petsc-3.14.5 2021-03-03
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# PetscGoogleDriveAuthorize

Get authorization and refresh token for accessing Google drive from PETSc

### Synopsis

    PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm comm,char access_token[],char refresh_token[],size_t tokensize)

Not collective, only the first process in MPI_Comm does anything

### Input Parameters

| comm | - the MPI communicator
| tokensize | - size of the token arrays

### Output Parameters

| access_token | - can be used with PetscGoogleDriveUpload() for this one session
| refresh_token | - can be used for ever to obtain new access_tokens with PetscGoogleDriveRefresh(), guard this like a password it gives access to your Google Drive

### Notes

This call requires stdout and stdin access from process 0 on the MPI communicator

You can run src/sys/webclient/tutorials/googleobtainrefreshtoken to get a refresh token and then in the future pass it to PETSc programs with -google_refresh_token XXX

### See Also

PetscGoogleDriveRefresh(), PetscGoogleDriveUpload(), PetscURLShorten()

### Level

intermediate

### Location

src/sys/webclient/google.c

### Examples

src/sys/webclient/tutorials/googleobtainrefreshtoken.c.html
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