Comments (6)
Actually I think that it's possible to get the stats from the DataStorage: e.g. Crawly.DataStorage.stats(spider_name)
.
https://github.com/oltarasenko/crawly/blob/master/lib/crawly/manager.ex#L83
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I see, the crawl speed seems to be calculated based on the previous state's crawl count, so a separate callback would be necessary to obtain the crawl speed from the manager.
as for the drop count, there manager doesn't seem to be tracking it. Neither are the request/response workers:
- https://github.com/oltarasenko/crawly/blob/master/lib/crawly/requests_storage/requests_storage_worker.ex#L87
- https://github.com/oltarasenko/crawly/blob/master/lib/crawly/data_storage/data_storage_worker.ex#L40
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Tentative scope:
- start spider (implemented)
- stop spider (implemented)
- start all spiders
- stop all spiders
- spider stats (crawl count, overridden settings, request count, storage count, crawl speed, drop count)
- list all spiders
- schedule spider to start at specific time (maybe cron style scheduling?)
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@Ziinc I am thinking of making a major release of Crawly (aka v1.0.0). I think after a year of development and releases it's time to do that (I am seeing that our competitors: https://github.com/fredwu/crawler and https://github.com/Anonyfox/elixir-scrape have already reached their stable state and version, so I am tempted to do the same.
Saying this I would add that I think this is the last ticket that could summarize the 1.0.0 version of Crawly.
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After 0.11.0? I think you should only bump the major version when the api scope has stabilized. Right now there are still quite a few areas that are incomplete and may result in api changes.
Not much use comparing to other projects, as they have been around longer.
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@Ziinc yes we need to aim to get 1.0.0 release. It's a bit hard to push Crawly into production for larger products atm. The fact that we don't have a first stable major release hints that the framework is still in the testing stage. People are constantly saying that it's not stable.
I agree regarding the API stability. We need to achieve it, however it looks like, psychologically speaking we need to state that we have 1.0.0 aka stable version.
Probably we need to somehow define a scope of things to do before we can approach 1.0.0, however, it's even more important to get more production usages. If we fail to convince people to use crawly on production, we will die as a project :(
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Related Issues (20)
- Crawly.fetch giving 301 response instead of 200 HOT 1
- My Spider's code is never invoked, weird behavior with `Crawly.RequestsStorage.pop` in library code HOT 5
- This is actually a question, Nested scraping HOT 2
- Genserver time out crash in long-running pipeline HOT 1
- Stop and resume the spider where it stopped HOT 2
- Protocol error HOT 7
- `Crawly.Fetchers.Fetcher` implementation for Playwright HOT 4
- robots.txt matching is pretty buggy HOT 10
- Running many instances of one spider HOT 3
- Make the management tool opt-in by default HOT 5
- Q: Can the spider "fan out" on a website? (multiple next items) HOT 1
- Error: Could not load spiders. HOT 5
- [error] Pipeline crash by call: Crawly.Middlewares.UniqueRequest.run
- Encountering Complications with Forwarding to Crawly.API.Router HOT 1
- Upgrade to `httpoison` 2.x? HOT 3
- management Web UI on localhost:4001 is not working HOT 4
- Does Crawly support requests using the POST method? HOT 1
- Crawly compilation warnings, undefined Floki functions HOT 1
- CI issue: Failed to upload the report to 'https://coveralls.io', Couldn't find a repository matching this job. HOT 1
- Set base_url in init options instead of callback HOT 1
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