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- So, the next lookup plugin

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that we are going to explore is fileglob.

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What is this about?

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Well, the fileglob
lookup plugin can be used

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to iterate over a list of files according

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to a globbing pattern.

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And that's indeed very convenient.

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If you use fileglob,

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on a star between single quotes,

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then it'll provide a string

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of comma-separated values
for all files in the output.

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And that allows you to
work with wildcards.

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I mean, have you ever tried
to use the copy module

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to copy files according
to a wildcard pattern?

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That's not really going to work.

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And that is why this fileglob
lookup plugin can be useful.

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Now, to force the lookup plugin

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to return a list of values,

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instead of a string of
comma-separated values,

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use the query keyword instead of lookup.

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Do remember most lookup plugins

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can be used using lookup or query.

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So, query fileglob will
do what you want to do.

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And in the output, you
will see that it is a list

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because the data is
encapsulated by brackets.

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Let's have a look at a couple of examples.

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So, the first example is fileglob string.

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And in fileglob string,

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you can see it's quite a simple example,

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accessing fileglob using debug

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and the message is using lookup fileglob

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on dot star in the current
user home directory.

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Notice that the indentation is weird,

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but there is nothing
against using 10 spaces

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or even more in the indentation

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as long as you're consistent.

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So, I feel this urge to fix it

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but really that's not necessary.

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Let me show you Ansible playbook

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on fileglobstring.yaml,

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and there we go.

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We have a string value.

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So, this is a comma-separated string

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with all files in just one string.

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That might not be what you want to do

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00:02:03,420 --> 00:02:05,990
because it's a little
bit difficult to work

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with values in that way.

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00:02:07,430 --> 00:02:10,360
And that is why we also
have fileglob list.

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00:02:10,360 --> 00:02:12,480
And you can see it's completely the same

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00:02:12,480 --> 00:02:16,950
but this time we are using
query instead of lookup.

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00:02:16,950 --> 00:02:20,153
And if you run it filegloblist.yaml,

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then this is what we get.

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00:02:26,031 --> 00:02:26,981
And as you can see,

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each file is listed independently.

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Why is that?

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Because we are looping over them after all

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and the loop this time
is working successfully

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because it's a list.

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And you need lists, if you want to loop.

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- We have just looked
at the fileglob basics.

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Let's dig a little bit deeper

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and talk about using
fileglob with wildcards.

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So, the thing is the Ansible copy module

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does not support wildcards.

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That is so inconvenient.

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00:02:58,950 --> 00:03:01,660
And if you want to fix that,
you can use a fileglob filter

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in the loop to present this
wildcard functionality.

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Do keep in mind though,
that this is not recommended

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for copying many files as for angle,

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00:03:11,680 --> 00:03:15,220
every single file the
copy model will be called.

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So, it'll be a lot of work

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but it'll work and I will show you

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how exactly.

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So for this demo,

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I have

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00:03:25,350 --> 00:03:28,270
two demo files, wildcardcopy1.yaml

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00:03:28,270 --> 00:03:29,863
and wildcardcopy2.yaml.

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What are we doing in wildcardcopy1.yaml?

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00:03:34,050 --> 00:03:38,007
Well, we are trying to copy test files.

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00:03:38,007 --> 00:03:40,480
So, test files should be existing

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in the current user home directory

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00:03:42,040 --> 00:03:43,530
mkdir -/testfiles

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00:03:45,740 --> 00:03:47,731
and let's use

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00:03:47,731 --> 00:03:48,564
touch

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00:03:52,566 --> 00:03:54,483
- /testfiles

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00:03:57,236 --> 00:03:58,090
/file

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00:04:00,902 --> 00:04:04,510
(1...100).txt

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00:04:04,510 --> 00:04:06,213
LS until the -/testfiles.

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00:04:07,440 --> 00:04:10,680
And there you can see, I
just created a hundred files.

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00:04:10,680 --> 00:04:14,220
This is a convenient
way to indicate range.

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00:04:14,220 --> 00:04:17,400
And what happens if you
use Ansible playbook

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00:04:17,400 --> 00:04:19,497
on wildcardcopy1.yaml?

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00:04:22,690 --> 00:04:26,383
Well, we can see that
the copy module did not

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00:04:27,870 --> 00:04:29,100
like this very much.

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00:04:29,100 --> 00:04:33,300
It's telling us, "Could not
find or access test files star."

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00:04:33,300 --> 00:04:34,970
So, that's not working.

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00:04:34,970 --> 00:04:37,330
And that is because we are using

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00:04:37,330 --> 00:04:38,940
the wrong approach in this file.

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00:04:38,940 --> 00:04:41,230
Let's have a look at wildcard copy two

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00:04:41,230 --> 00:04:43,330
and in wildcard copy two,

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00:04:43,330 --> 00:04:46,370
we do use the right approach.

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00:04:46,370 --> 00:04:49,583
So, loop is used over query fileglob.

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Fileglob is

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working on

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00:04:55,110 --> 00:04:56,960
all files in test files

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00:04:56,960 --> 00:05:01,550
and that makes sure that they
can be copied over one by one.

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00:05:01,550 --> 00:05:03,120
So, the loop

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00:05:03,120 --> 00:05:03,953
is

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00:05:04,880 --> 00:05:06,720
producing a list of files,

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00:05:06,720 --> 00:05:09,690
query is how you produce a list.

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And this list of files
is what we are defining

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00:05:12,960 --> 00:05:13,970
in the loop variable.

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00:05:13,970 --> 00:05:18,970
And next item is used to
iterate over them one by one.

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Let me also show you that this works

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00:05:22,310 --> 00:05:25,003
but you need to be patient.

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As you can see it's
going there one by one,

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so will be busy for the next
two minutes or so, doing so.

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- So, here we are.

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Two minutes later, we've got the result.

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So again, it works, but it's not perfect

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if you need to go over lots of files.

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Do remember the synchronized model

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00:05:46,080 --> 00:05:47,623
to work with lots of files.