{"action":"created","issue":{"url":"https://api.github.com/repos/akka/akka/issues/15153","labels_url":"https://api.github.com/repos/akka/akka/issues/15153/labels{/name}","comments_url":"https://api.github.com/repos/akka/akka/issues/15153/comments","events_url":"https://api.github.com/repos/akka/akka/issues/15153/events","html_url":"https://github.com/akka/akka/issues/15153","id":33160251,"number":15153,"title":"Print flow graph as DOT (graph desc format)","user":{"login":"ktoso","id":120979,"avatar_url":"https://avatars.githubusercontent.com/u/120979?v=3","gravatar_id":"","url":"https://api.github.com/users/ktoso","html_url":"https://github.com/ktoso","followers_url":"https://api.github.com/users/ktoso/followers","following_url":"https://api.github.com/users/ktoso/following{/other_user}","gists_url":"https://api.github.com/users/ktoso/gists{/gist_id}","starred_url":"https://api.github.com/users/ktoso/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ktoso/subscriptions","organizations_url":"https://api.github.com/users/ktoso/orgs","repos_url":"https://api.github.com/users/ktoso/repos","events_url":"https://api.github.com/users/ktoso/events{/privacy}","received_events_url":"https://api.github.com/users/ktoso/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/akka/akka/labels/1%20-%20triaged","name":"1 - triaged","color":"5319e7"},{"url":"https://api.github.com/repos/akka/akka/labels/t:stream","name":"t:stream","color":"cccccc"}],"state":"open","locked":false,"assignee":null,"milestone":{"url":"https://api.github.com/repos/akka/akka/milestones/16","html_url":"https://github.com/akka/akka/milestones/streams-2.0","labels_url":"https://api.github.com/repos/akka/akka/milestones/16/labels","id":745106,"number":16,"title":"streams-2.0","description":"","creator":{"login":"rkuhn","id":470469,"avatar_url":"https://avatars.githubusercontent.com/u/470469?v=3","gravatar_id":"","url":"https://api.github.com/users/rkuhn","html_url":"https://github.com/rkuhn","followers_url":"https://api.github.com/users/rkuhn/followers","following_url":"https://api.github.com/users/rkuhn/following{/other_user}","gists_url":"https://api.github.com/users/rkuhn/gists{/gist_id}","starred_url":"https://api.github.com/users/rkuhn/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/rkuhn/subscriptions","organizations_url":"https://api.github.com/users/rkuhn/orgs","repos_url":"https://api.github.com/users/rkuhn/repos","events_url":"https://api.github.com/users/rkuhn/events{/privacy}","received_events_url":"https://api.github.com/users/rkuhn/received_events","type":"User","site_admin":false},"open_issues":139,"closed_issues":6,"state":"open","created_at":"2014-08-06T15:08:47Z","updated_at":"2015-11-03T11:06:40Z","due_on":null,"closed_at":null},"comments":6,"created_at":"2014-05-09T10:12:13Z","updated_at":"2015-11-03T11:07:13Z","closed_at":null,"body":"Long term thing: We definitely should at some point implement DOT logging (dot is this lang for graph description), which allows you to draw a graph of your pipeline. This also would benefit from descriptions in names).\r\n\r\nDOT is this: http://en.wikipedia.org/wiki/DOT_(graph_description_language)\r\n\r\n```\r\n digraph graphname {\r\n     a -> b -> c;\r\n     b -> d;\r\n }\r\n```\r\n\r\nbetter example with labels:\r\n```\r\ndigraph G {\r\n  1 [label = \"map-1-(doing the things)\"];\r\n  2 [label = \"filter-2-only old tasks\"];\r\n  1->2 \r\n}\r\n```\r\n\r\nExample output via graphviz:\r\n![440px-dotlanguagedirected svg](https://cloud.githubusercontent.com/assets/120979/2926848/5a8c3858-d762-11e3-8105-e598fbc383f6.png)\r\n\r\nDepends on:\r\n* https://github.com/akka/akka/issues/15152 which adds descriptions to ast nodes.\r\n* https://github.com/akka/akka/pull/15151#issuecomment-42650917 which adds \"nice names to ast nodes\""},"comment":{"url":"https://api.github.com/repos/akka/akka/issues/comments/153316082","html_url":"https://github.com/akka/akka/issues/15153#issuecomment-153316082","issue_url":"https://api.github.com/repos/akka/akka/issues/15153","id":153316082,"user":{"login":"drewhk","id":932285,"avatar_url":"https://avatars.githubusercontent.com/u/932285?v=3","gravatar_id":"","url":"https://api.github.com/users/drewhk","html_url":"https://github.com/drewhk","followers_url":"https://api.github.com/users/drewhk/followers","following_url":"https://api.github.com/users/drewhk/following{/other_user}","gists_url":"https://api.github.com/users/drewhk/gists{/gist_id}","starred_url":"https://api.github.com/users/drewhk/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/drewhk/subscriptions","organizations_url":"https://api.github.com/users/drewhk/orgs","repos_url":"https://api.github.com/users/drewhk/repos","events_url":"https://api.github.com/users/drewhk/events{/privacy}","received_events_url":"https://api.github.com/users/drewhk/received_events","type":"User","site_admin":false},"created_at":"2015-11-03T11:07:13Z","updated_at":"2015-11-03T11:07:13Z","body":"Will revisit later, after fusing support. I have a half working solution but not happy with it."}}