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Files migration issue

I am following this tutorial on how to migrate files from D7 into D8.

I have the migration setup with the following yml configuration:

uuid: a685a4e0-1022-4bf2-a787-f6f1bef587ea langcode: en status: true dependencies: {  } id: d8_files class: null field_plugin_method: null cck_plugin_method: null migration_tags:   - 'Drupal 7'   - Content migration_group: D7-TO-D8 label: 'D7 to 8 Public files' source:   plugin: d7_file   scheme: public   constants:     # source_base_path: 'sites/default/files/'     # source_base_path: '/var/www/d8/sites/default/files/'     # source_base_path: '/var/www/d8/sites/default/files/d7_download/page/files/'     # source_base_path: '/sites/default/files/d7_download/page/files/'     # source_base_path: '/var/www/d7/sites/default/files/page/files/'     source_base_path: '/var/www/d7/sites/default/files/' process:   fid: fid   filename: filename   source_full_path:     -       plugin: concat       delimiter: /       source:         - constants/source_base_path         - filepath     -       plugin: urlencode   uri:     plugin: file_copy     source:       - '@source_full_path'       - uri   filemime: filemime   status: status   created: timestamp   changed: timestamp   uid: uid destination:   plugin: 'entity:file' migration_dependencies: null

Migrate-status indicates I have over 2000 files detected in the D7 database ready for migration but when I try migrating it just reports 0 migrated content and errors, shown below:

enter image description here

My guess is the migration does not know where to find the images but I have tried a variety of paths to those image by altering the source_base_path value however I still get no migrated files.

Can anyone help, please?

UPDATE:

I found out more on the issue preventing the migration.

When I checked the logs for the d8_files migration, I found messages such as the following:

File'/var/www/d8/sites/default/files/d7_download//sites/default/files/field/image/imagefield_OvRwVF.jpeg' does not exist

The issue is how the module is creating the file url.

In the source section of my d8_file.yml, I had set the following:

source_base_path: '/var/www/d8/sites/default/files/d7_download/'

… which is the absolute path to the directory containing the files I wish to migrate. The migrate module is concatenating /sites/default/files to the end of the path which makes it wrong. I have tried doing things like navigating up the directory path by using ../../ in the source_base_path settings but it doesn’t work … it’s just seen as a string.

Can anyone tell me how to correct this?

In the process section, I saw the following:

process:   fid: fid   filename: filename   source_full_path:     -       plugin: concat       delimiter: /       source:         - constants/source_base_path         - filepath

I suspect that concat value is the problem. BUT, I have no idea what other value to set it to.

PS: Can anyone advice where is the system to find such information on any plugin ???

This article was republished from its original source.
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