Rsync - Files with same file ending - rsync

Question

I have these JSON files in a large directory structure. Some are just "abc.json" and some the added ".finished". I want to rsync only the files without ".finished".
$ find
.
./a
./a/abc.json.finished
./a/abc.json <-- this file
./a/index.html
./a/somefile.css
./b
./b/abc.json.finished
./b/abc.json <-- this file
Sample rsync command that copies all the "abc.json" AND the "abc.json.finished". I just want the "abc.json".
$ rsync --exclude="finished" --include="*c.json" --recursive \
--verbose --dry-run . server:/tmp/rsync
sending incremental file list
created directory /tmp/rsync
./
a/
a/abc.json
a/abc.json.finished
a/index.html
a/somefile.css
b/
b/abc.json
b/abc.json.finished
sent 212 bytes received 72 bytes 113.60 bytes/sec
total size is 0 speedup is 0.00 (DRY RUN)
Update: Added more files to the folders. HTML files, CSS and other files are present in my scenario. Only files ending in "c.json" should be transferred.
Scenario can be recreated with the following commands:
mkdir a
touch a/abc.json.finished
touch a/abc.json
touch a/index.html
touch a/somefile.css
mkdir b
touch b/abc.json.finished
touch b/abc.json

Answer 1

Try the following command. It assumes that you also want to replicate the source directory tree, (for any directories containing files which end with c.json), in the destination location:
$ rsync --include="*c.json" --exclude="*.*" --recursive \
--verbose --dry-run . server:/tmp/rsync
Explanation of command:
--include="*c.json" includes only assets whose name ends with c.json
--exclude="*.*" excludes all other assets (i.e. assets whose name includes a dot .)
--recursive recurse into directories.
--verbose log the results to the console.
--dry-run shows what would have been copied, without actually copying the files. This option/flag should be omitted to actually perform the copy task.
. the path to the source directory.
server:/tmp/rsync the path to the destination directory.
EDIT: Unfortunately, the command provided above also copies files whose filename does not include a dot character. To avoid this consider utlizing both rsync and find as follows:
$ rsync --dry-run --verbose --files-from=<(find ./ -name "*c.json") \
./ server:/tmp/rsync
This utilizes process substitution, i.e. <(list), to pass the output from the find command to the --files-from= option/flag of the rsync command.
source tree
.
├── a
│   ├── abc.json
│   ├── abc.json.finished.json
│   ├── index.html
│   └── somefile.css
└── b
├── abc.json
└── abc.json.finished.json
resultant destination tree
server
└── tmp
└── rsync
├── a
│ └── abc.json
└── b
└── abc.json

Answer 2

A hacky solution is use grep and create a file containing all file names we want to transfer.
find |grep "c.json$" > rsync-files
rsync --files-from=rsync-files --verbose --recursive --compress --dry-run \
./ \
server:/tmp/rsync
rm rsync-files
Content of 'rsync-files':
./a/abc.json
./b/abc.json
Output when running rsync command:
sending incremental file list
created directory /tmp/rsync
./
a/
a/abc.json
b/
b/abc.json