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generate-cask-api: fall back to previous URL if network fails #18390

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generate-cask-api: fall back to previous URL if network fails #18390

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37 changes: 37 additions & 0 deletions Library/Homebrew/extend/api_hashable.rb
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,43 @@

# Used to substitute common paths with generic placeholders when generating JSON for the API.
module APIHashable
extend T::Helpers

requires_ancestor { Module }

module CaskURLFallbackExtension
extend T::Helpers

requires_ancestor { Kernel }
requires_ancestor { Cask::Cask }

def url(...)
url = super

# URLs with blocks are lazy-evaluated, so we let's force an evaluation to ensure the URL can be determined
begin
url.to_s
rescue
raise unless self.class.generating_hash?
raise unless (json_cask = Homebrew::API::Cask.all_casks[token])
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Suggested change
raise unless (json_cask = Homebrew::API::Cask.all_casks[token])
json_cask = Homebrew::API::Cask.all_casks.fetch(token).presence
raise unless json_cask


prev_url = json_cask["url"]
prev_specs = json_cask["url_specs"] || {}
url = Cask::URL.new(prev_url, **prev_specs)

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Suggested change
prev_url = json_cask["url"]
prev_specs = json_cask["url_specs"] || {}
url = Cask::URL.new(prev_url, **prev_specs)
previous_url = json_cask["url"]
previous_specs = json_cask["url_specs"] || {}
url = Cask::URL.new(previous_url, **previous_specs)


opoo "Unable to determine URL for #{token}. Falling back to previous value: #{url}"

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end

url
end
end

def self.extended(base)
return if base != Cask::Cask

base.prepend CaskURLFallbackExtension
end

def generating_hash!
return if generating_hash?

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