Add build.py

Author: Paul Korzhyk

scripts/build.py

@@ -0,0 +1,81 @@
+import functools
+import json
+import re
+import semver
+import subprocess as sp
+
+def exec(*argv):
+    res = sp.run(argv, capture_output=True)
+    if not res.returncode == 0:
+        print('Error running', argv)
+        print('StdOut:\n', res.stdout)
+        print('StdErr:\n', res.stderr)
+        raise Exception('Failed to exec ' + " ".join(argv))
+    return res
+
+
+def runHugo(outSuffix=""):
+    return exec(
+        "hugo",
+		"--destination=public/" + outSuffix,
+		"--baseURL",
+        "https://tour.dgraph.io/" + outSuffix,
+        "--config",
+        "config.toml,releases.toml",
+        )
+
+
+def getReleases():
+    gitBranches = exec("git", "branch")
+    branches = gitBranches.stdout.decode('utf8')
+    branches = branches.split('\n')
+    res = []
+    for b in branches:
+        match = re.compile(r"[ *]+dgraph-([0-9.]+)").match(b)
+        if match:
+            res.append(match.group(1))
+    print('Found release versions', res)
+
+    res.sort(key=functools.cmp_to_key(semver.compare), reverse=True)
+
+    res = ["master"] + res
+    print('Order on the webpage: ', res)
+    return res
+
+def buildBranch(branch, dest, jsonData):
+    print("Building", branch, "to public/" + dest)
+    res = exec("git", "checkout", branch)
+
+    with open('releases.json', 'w') as f:
+        f.write(json.dumps(jsonData))
+
+    runHugo(dest)
+
+def buildAll(releases):
+    latestRelease = releases[1]
+    print('Latest Release (recommended to users): ', latestRelease)
+
+    def jsonFor(version, latestRelease, releases):
+        return {
+            "latestRelease": latestRelease,
+            "tourReleases": releases,
+            "thisRelease": version,
+        }
+
+    buildBranch(
+        "dgraph-" + latestRelease,
+        "",
+        jsonFor(latestRelease, latestRelease, releases))
+
+    for r in releases:
+        path = r if r == "master" else "dgraph-" + r
+        buildBranch(path, path, jsonFor(r, latestRelease, releases))
+
+
+def main():
+    releases = getReleases()
+    buildAll(releases)
+
+    exec("git", "checkout", "master")
+
+main()