{"action":"created","comment":{"url":"https://api.github.com/repos/mediachain/mediachain/pulls/comments/65730425","id":65730425,"diff_hunk":"@@ -0,0 +1,27 @@\n+syntax = \"proto3\";\n+package protocol;\n+option java_package = \"io.mediachain.protocol.transactor\";\n+\n+message MultihashReference {\n+    string reference = 1;\n+}\n+\n+message InsertRequest {\n+    bytes canonicalCbor = 1;\n+}\n+\n+message UpdateRequest {\n+    bytes chainCellCbor = 1;\n+}\n+\n+service TransactorService {\n+    rpc FetchObjectChainHead(MultihashReference) returns\n+        (MultihashReference);\n+\n+    rpc InsertCanonicalRecord(InsertRequest) returns\n+        (MultihashReference);\n+\n+    rpc UpdateCanonicalRecord(UpdateRequest) returns","path":"protocol/src/main/protobuf/Transactor.proto","position":24,"original_position":24,"commit_id":"fc4760bd93195df0023860239dea959b0d328ced","original_commit_id":"fc4760bd93195df0023860239dea959b0d328ced","user":{"login":"parkan","id":204986,"avatar_url":"https://avatars.githubusercontent.com/u/204986?v=3","gravatar_id":"","url":"https://api.github.com/users/parkan","html_url":"https://github.com/parkan","followers_url":"https://api.github.com/users/parkan/followers","following_url":"https://api.github.com/users/parkan/following{/other_user}","gists_url":"https://api.github.com/users/parkan/gists{/gist_id}","starred_url":"https://api.github.com/users/parkan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/parkan/subscriptions","organizations_url":"https://api.github.com/users/parkan/orgs","repos_url":"https://api.github.com/users/parkan/repos","events_url":"https://api.github.com/users/parkan/events{/privacy}","received_events_url":"https://api.github.com/users/parkan/received_events","type":"User","site_admin":false},"body":"All our updates are append-only so this is equivalent, tho?","created_at":"2016-06-03T15:50:15Z","updated_at":"2016-06-03T15:50:15Z","html_url":"https://github.com/mediachain/mediachain/pull/110#discussion_r65730425","pull_request_url":"https://api.github.com/repos/mediachain/mediachain/pulls/110","_links":{"self":{"href":"https://api.github.com/repos/mediachain/mediachain/pulls/comments/65730425"},"html":{"href":"https://github.com/mediachain/mediachain/pull/110#discussion_r65730425"},"pull_request":{"href":"https://api.github.com/repos/mediachain/mediachain/pulls/110"}}},"pull_request":{"url":"https://api.github.com/repos/mediachain/mediachain/pulls/110","id":72224396,"html_url":"https://github.com/mediachain/mediachain/pull/110","diff_url":"https://github.com/mediachain/mediachain/pull/110.diff","patch_url":"https://github.com/mediachain/mediachain/pull/110.patch","issue_url":"https://api.github.com/repos/mediachain/mediachain/issues/110","number":110,"state":"open","locked":false,"title":"RPC client interface for transactor","user":{"login":"yusefnapora","id":678715,"avatar_url":"https://avatars.githubusercontent.com/u/678715?v=3","gravatar_id":"","url":"https://api.github.com/users/yusefnapora","html_url":"https://github.com/yusefnapora","followers_url":"https://api.github.com/users/yusefnapora/followers","following_url":"https://api.github.com/users/yusefnapora/following{/other_user}","gists_url":"https://api.github.com/users/yusefnapora/gists{/gist_id}","starred_url":"https://api.github.com/users/yusefnapora/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/yusefnapora/subscriptions","organizations_url":"https://api.github.com/users/yusefnapora/orgs","repos_url":"https://api.github.com/users/yusefnapora/repos","events_url":"https://api.github.com/users/yusefnapora/events{/privacy}","received_events_url":"https://api.github.com/users/yusefnapora/received_events","type":"User","site_admin":false},"body":"Still a work in progress.\r\n\r\nSo far, adds three RPC methods\r\n  - `FetchObjectChainHead`\r\n    - takes a multihash reference and gets the head of a canonical's chain\r\n  - `InsertCanonicalRecord`\r\n    - accepts a cbor-encoded Entity or Artefact and tries to insert\r\n  - `UpdateCanonicalRecord`\r\n    - accepts a cbor-encoded `ChainCell` and tries to update the referenced canonical\r\n\r\n\r\nIt has these message types defined:\r\n\r\n- `MultihashReference` - contains a base58-encoded string repr of a multihash\r\n- `InsertRequest` - contains a byte array with cbor-encoded `Entity` or `Artefact`\r\n- `UpdateRequest` - contains a byte array with cbor-encoded `ChainCell`\r\n    - `FIXME`: this should be changed to include a ref to the canonical, to match the interface in the copycat client and let the transactor verify that the reference in the cell matches the one in the request.\r\n\r\nAdds a simple scala cli app to start the RPC service, which wraps the copycat client interface.  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