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William Chargin 993de9303a
github: translate old format to structured format (#930)
Summary:
This implements the translation module described in #923. See that issue
for context.

Test Plan:
This is a mostly straightforward translation from one strongly typed
data structure to another, so Flow handles most of it.

As a check on the snapshot, run:

```
$ grep -e oid -e target -e mergeCommit \
> src/plugins/github/__snapshots__/translateContinuations.test.js.snap
      "target": Object {
        "oid": "6bd1b4c0b719c22c688a74863be07a699b7b9b34",
            "oid": "c430bd74455105f77215ece51945094ceeee6c86",
                "oid": "6d5b3aa31ebb68a06ceb46bbd6cf49b6ccd6f5e6",
                    "oid": "0a223346b4e6dec0127b1e6aa892c4ee0424b66a",
                        "oid": "ec91adb718a6045b492303f00d8e8beb957dc780",
                        "oid": "ecc889dc94cf6da17ae6eab5bb7b7155f577519d",
                            "oid": "ec91adb718a6045b492303f00d8e8beb957dc780",
        "mergeCommit": Object {
          "oid": "0a223346b4e6dec0127b1e6aa892c4ee0424b66a",
              "oid": "ec91adb718a6045b492303f00d8e8beb957dc780",
              "oid": "ecc889dc94cf6da17ae6eab5bb7b7155f577519d",
                  "oid": "ec91adb718a6045b492303f00d8e8beb957dc780",
        "mergeCommit": Object {
          "oid": "6d5b3aa31ebb68a06ceb46bbd6cf49b6ccd6f5e6",
              "oid": "0a223346b4e6dec0127b1e6aa892c4ee0424b66a",
                  "oid": "ec91adb718a6045b492303f00d8e8beb957dc780",
                  "oid": "ecc889dc94cf6da17ae6eab5bb7b7155f577519d",
                      "oid": "ec91adb718a6045b492303f00d8e8beb957dc780",
        "mergeCommit": null,
```

Cross-check this against [the example-github commits][commits] thus:

  - Note that commit `6bd1b4c` is the head commit, and is thus the root
    commit of the `target` chain.
  - Note that commits `0a22334` and `6d5b3aa`, which were merged via
    pull request, appear twice each: once in the history from head, and
    once as the merge commit of a pull request.
  - Note that commit `0a22334` has two parents at each occurrence.
  - Note that the unmerged pull request’s merge commit is `null`.

[commits]: https://github.com/sourcecred/example-github/commits/master

To run this on real-world data, apply the following patch:

```diff
diff --git a/src/plugins/github/fetchGithubRepo.js b/src/plugins/github/fetchGithubRepo.js
index 6ac201af..b14ca760 100644
--- a/src/plugins/github/fetchGithubRepo.js
+++ b/src/plugins/github/fetchGithubRepo.js
@@ -11,6 +11,7 @@ import {stringify, inlineLayout, type Body} from "../../graphql/queries";
 import {createQuery, createVariables, postQueryExhaustive} from "./graphql";
 import type {GithubResponseJSON} from "./graphql";
 import type {RepoId} from "../../core/repoId";
+import translateContinuations from "./translateContinuations";

 /**
  * Scrape data from a GitHub repo using the GitHub API.
@@ -44,6 +45,11 @@ export default function fetchGithubRepo(
     payload
   ).then((x: GithubResponseJSON) => {
     ensureNoMorePages(x);
+    console.warn("Translating continuations...");
+    for (const w of translateContinuations(x).warnings) {
+      console.warn(w);
+    }
+    console.warn("Done.");
     return x;
   });
 }
```

Then run:

```
$ yarn backend >/dev/null 2>/dev/null; echo $?
0
$ node ./bin/sourcecred.js load sourcecred/sourcecred --plugin github 2>&1 |
> ts -s '%.s'
55.015740 Translating continuations...
55.037217 { type: 'UNKNOWN_PARENT_OID',
55.037273   child: '0d38dde23a6de831315f3643a7d2bc15e8df7678',
55.037290   parent: 'cb8ba0eaa1abc1f921e7165bb19e29b40723ce65' }
55.037309 { type: 'UNKNOWN_PARENT_OID',
55.037336   child: 'd152f48ce4c2ed1d046bf6ed4f139e7e393ea660',
55.037359   parent: 'de7a8723963d9cd0437ef34f5942a071b850c0e7' }
55.037383 Done.
```

Note that the two commits in question were each merged into a non-master
branch, in #28 and #329 respectively. Note also that translating these
continuations took just 22 milliseconds.

wchargin-branch: github-translate-continuations
2018-10-22 10:01:49 -07:00
.circleci ci: add "commit" and "nightly" CircleCI workflows (#906) 2018-10-02 10:57:33 -07:00
config github: add GraphQL schema and Flow types (#928) 2018-10-19 09:04:54 -07:00
flow-typed/npm flow-typed: fix Prettier libdefs (#925) 2018-10-19 08:54:00 -07:00
scripts test: invoke `yarn backend` only once (#784) 2018-09-05 12:47:54 -07:00
sharness test: check that JS tests describe their filenames (#802) 2018-09-06 20:44:59 -07:00
src github: translate old format to structured format (#930) 2018-10-22 10:01:49 -07:00
.eslintrc.js Remove obsolete eslint TODOs (#872) 2018-09-20 12:52:07 -07:00
.flowconfig Flow: enable `//$ExpectFlowError` (#315) 2018-05-29 13:56:36 -07:00
.gitignore Configure Webpack for backend applications (#84) 2018-03-18 22:43:23 -07:00
.prettierignore prettier: ignore sharness/ (#866) 2018-09-19 18:12:38 -07:00
.prettierrc.json Move package json to root (#37) 2018-02-26 22:32:23 -08:00
CHANGELOG.md Hyperlink Git commits to GitHub (#887) 2018-09-27 20:32:43 -07:00
CONTRIBUTING.md ci: remove Travis (#914) 2018-10-04 12:31:14 -07:00
LICENSE license: relicense under MIT + Apache-2 (#896) 2018-09-26 19:28:41 -07:00
LICENSE-APACHE license: relicense under MIT + Apache-2 (#896) 2018-09-26 19:28:41 -07:00
LICENSE-MIT license: relicense under MIT + Apache-2 (#896) 2018-09-26 19:28:41 -07:00
README.md readme: replace Travis badge with CircleCI badge (#912) 2018-10-03 11:43:10 -07:00
package.json license: relicense under MIT + Apache-2 (#896) 2018-09-26 19:28:41 -07:00
yarn.lock Upgrade jest and typings (#893) 2018-09-25 18:48:54 -07:00

README.md

SourceCred

Build Status Discourse topics Discord

SourceCred creates reputation networks for open-source projects. Any open-source project can create its own cred, which is a reputational metric showing how much credit contributors deserve for helping the project. To compute cred, we organize a projects contributions into a graph, whose edges connect contributions to each other and to contributors. We then run PageRank on that graph.

To learn more about SourceCreds vision and values, please check out our website and our forum. One good forum post to start with is A Gentle Introduction to Cred.

For an example of SourceCred in action, you can see SourceCreds own prototype cred attribution.

Current Status

We have a prototype that can generate a cred attribution based on GitHub interactions (issues, pull requests, comments, references, etc.). Were working on adding more information to the prototype, such as tracking modifications to individual files, source-code analysis, GitHub reactions, and more.

Running the Prototype

If youd like to try it out, you can run a local copy of SourceCred as follows. First, make sure that you have the following dependencies:

Then, run the following commands to clone and build SourceCred:

git clone https://github.com/sourcecred/sourcecred.git
cd sourcecred
yarn install
yarn backend
export SOURCECRED_GITHUB_TOKEN=YOUR_GITHUB_TOKEN
node bin/sourcecred.js load REPO_OWNER/REPO_NAME
# this loads sourcecred data for a particular repository
yarn start
# then navigate to localhost:8080 in your browser

For example, if you wanted to look at cred for ipfs/js-ipfs, you could run:

$ export SOURCECRED_GITHUB_TOKEN=0000000000000000000000000000000000000000
$ node bin/sourcecred.js load ipfs/js-ipfs

replacing the big string of zeros with your actual token.

You can also combine data from multiple repositories into a single graph. To do so, pass multiple repositories to the load command, and specify an “output name” for the repository. For instance, the invocation

node bin/sourcecred.js load ipfs/js-ipfs ipfs/go-ipfs --output ipfs/meta-ipfs

will create a graph called ipfs/meta-ipfs in the cred explorer, containing the combined contents of the js-ipfs and go-ipfs repositories.

Early Adopters

Were looking for projects who want to be early adopters of SourceCred! If youre a maintainer of an open-source project and would like to start using SourceCred, please reach out to us on our Discord or our forum.

Contributing

Wed love to accept your contributions! You can reach out to us by posting on our forum, or chatting with us on Discord. We'd be happy to help you get started and show you around the codebase. Please also take a look at our contributing guide.

If youre looking for a place to start, weve tagged some issues Contributions Welcome.

License

SourceCred is dual-licensed under Apache 2.0 and MIT terms:

Acknowledgements

Wed like to thank Protocol Labs for funding and support of SourceCred. Wed also like to thank the many open-source communities that produced the software that SourceCred is built on top of, such as Git and Node.