{"action":"created","comment":{"url":"https://api.github.com/repos/moby/moby/pulls/comments/128514879","pull_request_review_id":51201497,"id":128514879,"diff_hunk":"@@ -1,47 +1,57 @@\n package errors\n \n-import \"net/http\"\n+// NotFoundError signals that the requested object doesn't exist\n+type NotFoundError interface {\n+\terror\n+\tNotFound()\n+}\n \n-// apiError is an error wrapper that also\n-// holds information about response status codes.\n-type apiError struct {\n+// InvalidParameterError signals that the user input is invalid\n+type InvalidParameterError interface {","path":"api/errors/errors.go","position":14,"original_position":14,"commit_id":"b547c47f0bbccea3a46eed66f246b9810855329b","original_commit_id":"b547c47f0bbccea3a46eed66f246b9810855329b","user":{"login":"cpuguy83","id":799078,"avatar_url":"https://avatars3.githubusercontent.com/u/799078?v=4","gravatar_id":"","url":"https://api.github.com/users/cpuguy83","html_url":"https://github.com/cpuguy83","followers_url":"https://api.github.com/users/cpuguy83/followers","following_url":"https://api.github.com/users/cpuguy83/following{/other_user}","gists_url":"https://api.github.com/users/cpuguy83/gists{/gist_id}","starred_url":"https://api.github.com/users/cpuguy83/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cpuguy83/subscriptions","organizations_url":"https://api.github.com/users/cpuguy83/orgs","repos_url":"https://api.github.com/users/cpuguy83/repos","events_url":"https://api.github.com/users/cpuguy83/events{/privacy}","received_events_url":"https://api.github.com/users/cpuguy83/received_events","type":"User","site_admin":false},"body":"I think it might be good to still keep these interfaces exported so it shows up in the package docs. But also +1 to adding the `Is<SomeErr>` methods.\r\n","created_at":"2017-07-20T13:32:31Z","updated_at":"2017-07-20T13:32:31Z","html_url":"https://github.com/moby/moby/pull/34188#discussion_r128514879","pull_request_url":"https://api.github.com/repos/moby/moby/pulls/34188","_links":{"self":{"href":"https://api.github.com/repos/moby/moby/pulls/comments/128514879"},"html":{"href":"https://github.com/moby/moby/pull/34188#discussion_r128514879"},"pull_request":{"href":"https://api.github.com/repos/moby/moby/pulls/34188"}}},"pull_request":{"url":"https://api.github.com/repos/moby/moby/pulls/34188","id":131343850,"html_url":"https://github.com/moby/moby/pull/34188","diff_url":"https://github.com/moby/moby/pull/34188.diff","patch_url":"https://github.com/moby/moby/pull/34188.patch","issue_url":"https://api.github.com/repos/moby/moby/issues/34188","number":34188,"state":"open","locked":false,"title":"[WIP] Remove string checking in API error handling","user":{"login":"cpuguy83","id":799078,"avatar_url":"https://avatars3.githubusercontent.com/u/799078?v=4","gravatar_id":"","url":"https://api.github.com/users/cpuguy83","html_url":"https://github.com/cpuguy83","followers_url":"https://api.github.com/users/cpuguy83/followers","following_url":"https://api.github.com/users/cpuguy83/following{/other_user}","gists_url":"https://api.github.com/users/cpuguy83/gists{/gist_id}","starred_url":"https://api.github.com/users/cpuguy83/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cpuguy83/subscriptions","organizations_url":"https://api.github.com/users/cpuguy83/orgs","repos_url":"https://api.github.com/users/cpuguy83/repos","events_url":"https://api.github.com/users/cpuguy83/events{/privacy}","received_events_url":"https://api.github.com/users/cpuguy83/received_events","type":"User","site_admin":false},"body":"Use strongly typed errors to set HTTP status codes.\r\nError interfaces are defined in the api/errors package and errors\r\nreturned from controllers are checked against these interfaces.\r\n\r\nErrors can be wrapped in a pkg/errors.Causer, as long as somewhere in the\r\nline of causes one of the interfaces is implemented. The special error\r\ninterfaces take precedence over Causer, meaning if both Causer and one\r\nof the new error interfaces are implemented, the Causer is not\r\ntraversed.\r\n\r\nFixes 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