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341 Commits

Author SHA1 Message Date
Joscha
e21795ee35 Make file cleanup part of default crawler behaviour 2021-05-22 21:45:51 +02:00
Joscha
ec95dda18f Unify crawling and downloading steps 
Now, the progress bar, limiter etc. for downloading and crawling are all handled
via the reusable CrawlToken and DownloadToken context managers.
 2021-05-22 21:36:53 +02:00
Joscha
098ac45758 Remove deprecated repeat decorators 2021-05-22 21:13:25 +02:00
Joscha
9889ce6b57 Improve PFERD error handling 2021-05-22 21:13:25 +02:00
Joscha
b4d97cd545 Improve output dir and report error handling 2021-05-22 20:54:42 +02:00
Joscha
afac22c562 Handle abort in exclusive output state correctly 
If the event loop is stopped while something holds the exclusive output, the
"log" singleton is now reset so the main thread can print a few more messages
before exiting.
 2021-05-22 18:58:19 +02:00
Joscha
552cd82802 Run async input and password getters in daemon thread 
Previously, it ran in the event loop's default executor, which would block until
all its workers were done working.

If Ctrl+C was pressed while input or a password were being read, the
asyncio.run() call in the main thread would be interrupted however, not the
input thread. This meant that multiple key presses (either enter or a second
Ctrl+C) were necessary to stop a running PFERD in some circumstances.

This change instead runs the input functions in daemon threads so they exit as
soon as the main thread exits.
 2021-05-22 18:37:53 +02:00
Joscha
dfde0e2310 Improve reporting of unexpected exceptions 2021-05-22 18:36:25 +02:00
Joscha
54dd2f8337 Clean up main and improve error handling 2021-05-22 16:47:24 +02:00
Joscha
b5785f260e Extract CLI argument parsing to separate module 2021-05-22 15:03:45 +02:00
Joscha
98b8ca31fa Add some todos 2021-05-22 14:45:46 +02:00
I-Al-Istannen
4b104b6252 Try out some HTTP authentication handling 
This is by no means final yet and will change a bit once the dl and cl
are changed, but it might serve as a first try. It is also wholly
untested.
 2021-05-21 12:02:51 +02:00
I-Al-Istannen
83d12fcf2d Add some explains to ilias crawler and use crawler exceptions 2021-05-20 14:58:54 +02:00
I-Al-Istannen
e4f9560655 Only retry on aiohttp errors in ILIAS crawler 
This patch removes quite a few retries and now only retries the ilias
element method. Every other HTTP-interacting method (except for the root
requests) is called from there and should be covered.

In the future we also want to retry the root a few times, but that
will be done after the download sink API is adjusted.
 2021-05-19 22:01:09 +02:00
I-Al-Istannen
8cfa818f04 Only call should_crawl once 2021-05-19 21:57:55 +02:00
I-Al-Istannen
81301f3a76 Rename the ilias crawler to ilias web crawler 2021-05-19 21:41:17 +02:00
I-Al-Istannen
2976b4d352 Move ILIAS file templates to own file 2021-05-19 21:37:10 +02:00
I-Al-Istannen
9f03702e69 Split up ilias crawler in multiple files 
The ilias crawler contained a crawler and an HTML parser, now they are
split in two.
 2021-05-19 21:34:36 +02:00
Joscha
3300886120 Explain config file loading 2021-05-19 18:11:43 +02:00
Joscha
0d10752b5a Configure explain log level via cli and config file 2021-05-19 17:50:10 +02:00
Joscha
92886fb8d8 Implement --version flag 2021-05-19 17:33:36 +02:00
Joscha
5916626399 Make noqua comment more specific 2021-05-19 17:16:59 +02:00
Joscha
a7c025fd86 Implement reusable FileSinkToken for OutputDirectory 2021-05-19 17:16:23 +02:00
Joscha
b7a999bc2e Clean up crawler exceptions and (a)noncritical 2021-05-19 13:25:57 +02:00
Joscha
3851065500 Fix local crawler's download bars 
Display the pure path instead of the local path.
 2021-05-18 23:23:40 +02:00
Joscha
4b68fa771f Move logging logic to singleton 
- Renamed module and class because "conductor" didn't make a lot of sense
- Used singleton approach (there's only one stdout after all)
- Redesigned progress bars (now with download speed!)
 2021-05-18 22:45:19 +02:00
I-Al-Istannen
1525aa15a6 Fix link template error and use indeterminate progress bar 2021-05-18 22:40:28 +02:00
I-Al-Istannen
db1219d4a9 Create a link file in ILIAS crawler 
This allows us to crawl links and represent them in the file system.
Users can choose between an ILIAS-imitation (that optionally
auto-redirects) and a plain text variant.
 2021-05-17 21:44:54 +02:00
I-Al-Istannen
b8efcc2ca5 Respect filters in ILIAS crawler 2021-05-17 21:30:26 +02:00
Joscha
0bae009189 Run formatting tools 2021-05-16 14:32:53 +02:00
I-Al-Istannen
8b76ebb3ef Rename IliasCrawler to KitIliasCrawler 2021-05-16 13:28:06 +02:00
I-Al-Istannen
2b6235dc78 Fix pylint warnings (and 2 found bugs) in ILIAS crawler 2021-05-16 13:17:12 +02:00
I-Al-Istannen
1c226c31aa Add some repeat annotations to the ILIAS crawler 2021-05-16 13:01:56 +02:00
I-Al-Istannen
9ec0d3e16a Implement date-demangling in ILIAS crawler 2021-05-16 13:01:56 +02:00
I-Al-Istannen
cf6903d109 Retry crawling on I/O failure 2021-05-16 13:01:56 +02:00
Joscha
9fd356d290 Ensure tmp files are deleted 
This doesn't seem to fix the case where an exception bubbles up to the top of
the event loop. It also doesn't seem to fix the case when a KeyboardInterrupt is
thrown, since that never makes its way into the event loop in the first place.

Both of these cases lead to the event loop stopping, which means that the tmp
file cleanup doesn't get executed even though it's inside a "with" or "finally".
 2021-05-15 23:00:40 +02:00
Joscha
989032fe0c Fix cookies getting deleted 2021-05-15 22:25:48 +02:00
Joscha
05573ccc53 Add fancy CLI options 2021-05-15 22:22:01 +02:00
I-Al-Istannen
c454fabc9d Add support for exercises in ILIAS crawler 2021-05-15 21:40:17 +02:00
I-Al-Istannen
7d323ec62b Implement video downloads in ilias crawler 2021-05-15 21:32:32 +02:00
I-Al-Istannen
c7494e32ce Start implementing crawling in ILIAS crawler 
The ilias crawler can now crawl quite a few filetypes, splits off
folders and crawls them concurrently.
 2021-05-15 20:42:18 +02:00
I-Al-Istannen
1123c8884d Implement an IliasPage 
This allows PFERD to semantically understand ILIAS HTML and is the
foundation for the ILIAS crawler. This patch extends the ILIAS crawler
to crawl the personal desktop and print the elements on it.
 2021-05-15 18:59:23 +02:00
Joscha
e1104f888d Add tfa authenticator 2021-05-15 18:27:16 +02:00
Joscha
8c32da7f19 Let authenticators provide username and password separately 2021-05-15 18:27:03 +02:00
Joscha
d63494908d Properly invalidate exceptions 
The simple authenticator now properly invalidates its credentials. Also, the
invalidation functions have been given better names and documentation.
 2021-05-15 17:37:05 +02:00
Joscha
b70b62cef5 Make crawler sections start with "crawl:" 
Also, use only the part of the section name after the "crawl:" as the crawler's
output directory. Now, the implementation matches the documentation again
 2021-05-15 17:24:37 +02:00
Joscha
868f486922 Rename local crawler path to target 2021-05-15 17:12:25 +02:00
I-Al-Istannen
b2a2b5999b Implement ILIAS auth and crawl home page 
This commit introduces the necessary machinery to authenticate with
ILIAS and crawl the home page.

It can't do much yet and just silently fetches the homepage.
 2021-05-15 15:25:05 +02:00
Joscha
595de88d96 Fix authenticator and crawler names 
Now, the "auth:" and "crawl:" parts are considered part of the name. This fixes
crawlers not being able to find their authenticators.
 2021-05-15 15:25:05 +02:00
Joscha
a6fdf05ee9 Allow variable whitespace in arrow rules 2021-05-15 15:25:05 +02:00
Joscha
f897d7c2e1 Add name variants for all arrows 2021-05-15 15:25:05 +02:00
Joscha
b0f731bf84 Make crawlers use transformers 2021-05-15 15:25:05 +02:00
Joscha
302b8c0c34 Fix errors loading local crawler config 
Apparently getint and getfloat may return a None even though this is not
mentioned in their type annotations.
 2021-05-15 15:25:05 +02:00
Joscha
acd674f0a0 Change limiter logic 
Now download tasks are a subset of all tasks.
 2021-05-15 15:25:05 +02:00
Joscha
ed2e19a150 Add reasons for invalid values 2021-05-15 15:25:05 +02:00
Joscha
296a169dd3 Make limiter logic more complex 
The limiter can now distinguish between crawl and download actions and has a
fancy slot system and delay logic.
 2021-05-15 15:25:05 +02:00
Joscha
1591cb9197 Add options to slow down local crawler 
These options are meant to make the local crawler behave more like a
network-based crawler for purposes of testing and debugging other parts of the
code base.
 2021-05-15 15:25:01 +02:00
Joscha
0c9167512c Fix output dir 
I missed these while renaming the resolve function. Shame on me for not running
mypy earlier.
 2021-05-14 21:28:38 +02:00
Joscha
a673ab0fae Delete old files 
I should've done this earlier
 2021-05-14 21:27:44 +02:00
Joscha
6e5fdf4e9e Set user agent to "pferd/<version>" 2021-05-14 21:27:44 +02:00
Joscha
93a5a94dab Single-source version number 2021-05-14 21:27:44 +02:00
Joscha
d565df27b3 Add HttpCrawler 2021-05-13 22:28:14 +02:00
Joscha
e3ee4e515d Disable highlighting of primitives 
This commit prevents rich from highlighting python-looking syntax like numbers,
arrays, 'None' etc.
 2021-05-13 19:47:44 +02:00
Joscha
94d6a01cca Use file mtime in local crawler 2021-05-13 19:42:40 +02:00
Joscha
38bb66a776 Update file metadata in more cases 
PFERD now not only updates file metadata when a file is successfully added or
changed, but also when a file is downloaded and then detected to be unchanged.

This could occur for example if a remote file's modification time was bumped,
possibly because somebody touched the file without changing it.
 2021-05-13 19:40:10 +02:00
Joscha
68781a88ab Fix asynchronous methods being not awaited 2021-05-13 19:39:49 +02:00
Joscha
910462bb72 Log stuff happening to files 2021-05-13 19:37:27 +02:00
Joscha
6bd6adb977 Fix tmp file names 2021-05-13 19:36:46 +02:00
Joscha
0acdee15a0 Let crawlers obtain authenticators 2021-05-13 18:57:20 +02:00
Joscha
c3ce6bb31c Fix crawler cleanup not being awaited 2021-05-11 00:28:45 +02:00
Joscha
0459ed093e Add simple authenticator 
... including some required authenticator infrastructure
 2021-05-11 00:28:03 +02:00
Joscha
d5f29f01c5 Use global conductor instance 
The switch from crawler-local conductors to a single pferd-global conductor was
made to prepare for auth section credential providers.
 2021-05-11 00:05:04 +02:00
Joscha
595ba8b7ab Remove dummy crawler 2021-05-10 23:47:46 +02:00
Joscha
cec0a8e1fc Fix mymy errors 2021-05-09 01:45:01 +02:00
Joscha
f9b2fd60e2 Document local crawler and auth 2021-05-09 01:33:47 +02:00
Joscha
60cd9873bc Add local file crawler 2021-05-06 01:02:40 +02:00
Joscha
273d56c39a Properly load crawler config 2021-05-05 23:45:10 +02:00
Joscha
5497dd2827 Add @noncritical and @repeat decorators 2021-05-05 23:36:54 +02:00
Joscha
bbfdadc463 Implement output directory 2021-05-05 18:08:34 +02:00
Joscha
07e831218e Add sync report 2021-05-02 00:56:10 +02:00
Joscha
91c33596da Load crawlers from config file 2021-04-30 16:22:14 +02:00
Joscha
e7a51decb0 Elaborate on transforms and implement changes 2021-04-29 20:24:18 +02:00
Joscha
f776186480 Use PurePath instead of Path 
Path should only be used when we need to access the file system. For all other
purposes (mainly crawling), we use PurePath instead since the paths don't
correspond to paths in the local file system.
 2021-04-29 20:20:25 +02:00
Joscha
0096d83387 Simplify Limiter implementation 2021-04-29 20:20:25 +02:00
Joscha
502654d853 Fix mypy errors 2021-04-29 15:47:52 +02:00
Joscha
d2103d7c44 Document crawler 2021-04-29 15:43:20 +02:00
Joscha
d96a361325 Test and fix exclusive output 2021-04-29 15:27:16 +02:00
Joscha
2e85d26b6b Use conductor via context manager 2021-04-29 14:23:28 +02:00
Joscha
6431a3fb3d Fix some mypy errors 2021-04-29 14:23:09 +02:00
Joscha
ac3bfd7388 Make progress bars easier to use 
The crawler now supports two types of progress bars
 2021-04-29 13:53:16 +02:00
Joscha
3ea86d18a0 Jerry-rig DummyCrawler to run 2021-04-29 13:45:04 +02:00
Joscha
bbc792f9fb Implement Crawler and DummyCrawler 2021-04-29 13:44:29 +02:00
Joscha
7e127cd5cc Clean up and fix conductor and limiter 
Turns out you have to await an async lock, who knew...
 2021-04-29 13:44:04 +02:00
Joscha
c4fb92c658 Make type hints compatible with Python 3.8 2021-04-29 13:11:58 +02:00
Joscha
a18db57e6f Implement terminal conductor 2021-04-29 11:44:47 +02:00
Joscha
b915e393dd Implement limiter 2021-04-29 10:24:28 +02:00
Joscha
3a74c23d09 Implement transformer 2021-04-29 09:51:50 +02:00
Joscha
fbebc46c58 Load and dump config 2021-04-29 09:51:50 +02:00
Joscha
5595a908d8 Configure entry point 2021-04-27 00:32:21 +02:00
I-Al-Istannen
29cd5d1a3c Reflect totality of sanitize_windows_path in return type 2021-04-19 11:10:02 +02:00