git: support readme configuration (#223)

Also fixes the status code handling in git-node.

Author: joyeecheung

components/git/land.js

@@ -141,8 +141,7 @@ async function main(state, argv, cli, req, dir) {
       return;
     }
     session = new LandingSession(cli, req, dir, argv.prid);
-    const { repo, owner, prid } = session;
-    const metadata = await getMetadata({ repo, owner, prid }, cli);
+    const metadata = await getMetadata(session.argv, cli);
     return session.start(metadata);
   } else if (state === APPLY) {
     return session.apply();

components/git/metadata.js

@@ -5,6 +5,7 @@ const yargs = require('yargs');
 const getMetadata = require('../metadata');
 const CLI = require('../../lib/cli');
 const config = require('../../lib/config').getMergedConfig();
+const { runPromise, IGNORE } = require('../../lib/run');
 
 const options = {
   owner: {
@@ -86,19 +87,13 @@ function handler(argv) {
   const logStream = process.stdout.isTTY ? process.stdout : process.stderr;
   const cli = new CLI(logStream);
 
-  return getMetadata(Object.assign({}, config, argv, parsed), cli)
+  const merged = Object.assign({}, argv, parsed, config);
+  return runPromise(getMetadata(merged, cli)
     .then(({status}) => {
       if (status === false) {
-        throw new Error('PR checks failed');
+        throw new Error(IGNORE);
       }
-    })
-    .catch((err) => {
-      if (cli.spinner.enabled) {
-        cli.spinner.fail();
-      }
-      cli.error(err);
-      process.exit(1);
-    });
+    }));
 }
 
 module.exports = {

lib/cli.js

@@ -4,6 +4,7 @@ const ora = require('ora');
 const { EOL } = require('os');
 const chalk = require('chalk');
 const read = require('read');
+const { IGNORE } = require('./run');
 
 const { warning, error, info, success } = require('./figures');
 
@@ -35,11 +36,11 @@ class CLI {
       read({prompt: promptText}, (err, answer) => {
         if (err) {
           this.log(`\nCanceled: ${err.message}`);
-          reject(new Error('__ignore__'));
+          reject(new Error(IGNORE));
           return;
         }
         if (answer === undefined || answer === null) {
-          reject(new Error('__ignore__'));
+          reject(new Error(IGNORE));
           return;
         }
         const trimmed = answer.toLowerCase().trim();

lib/pr_data.js

@@ -70,7 +70,14 @@ class PRData {
       const url = `https://raw.githubusercontent.com/${owner}/${repo}/master/README.md`;
       readme = await request.text(url);
     }
-    this.collaborators = getCollaborators(readme, cli, owner, repo);
+    try {
+      this.collaborators = getCollaborators(readme, cli, owner, repo);
+    } catch (err) {
+      const readme = argv.readme || `${owner}/${repo}/README.md`;
+      cli.stopSpinner(`Failed to get collaborator info from ${readme}`,
+        cli.SPINNER_STATUS.FAILED);
+      throw err;
+    }
   }
 
   async getPR() {

lib/run.js

@@ -66,3 +66,5 @@ exports.runSync = function(cmd, args, options) {
 exports.exit = function() {
   process.exit(1);
 };
+
+exports.IGNORE = IGNORE;

lib/session.js

@@ -28,6 +28,17 @@ class Session {
     return getNcuDir(this.dir);
   }
 
+  get argv() {
+    return {
+      owner: this.owner,
+      repo: this.repo,
+      upstream: this.upstream,
+      branch: this.branch,
+      readme: this.readme,
+      prid: this.prid
+    };
+  }
+
   get sessionPath() {
     return path.join(this.ncuDir, 'land');
   }
@@ -48,6 +59,10 @@ class Session {
     return this.config.branch;
   }
 
+  get readme() {
+    return this.config.readme;
+  }
+
   get pullName() {
     return `${this.owner}/${this.repo}/pulls/${this.prid}`;
   }