Create a small python driver for skiaserve

tools/skiaserve/tester/tester.py

Index: tools/skiaserve/tester/tester.py
diff --git a/tools/skiaserve/tester/tester.py b/tools/skiaserve/tester/tester.py
new file mode 100644
index 0000000000000000000000000000000000000000..b6c04bd6ab76a8af70020f3b0e88d50c964499cb
--- /dev/null
+++ b/tools/skiaserve/tester/tester.py
@@ -0,0 +1,111 @@
+# Copyright 2016 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+import argparse
+import json
+import os
+import re
+import requests
+
+from os import listdir
+from os.path import isfile, join
+
+ops = [
+    "enable_gpu",
+    "post",
+    "info",
+    "cmd",
+    "img"
+]
+
+def Check(request):
+    assert(request.status_code == 200)
+    return request
+
+def WriteJson(request, path):
+    # Writes out pretty printed json
+    with open(path, 'wb+') as fd:
+        json.dump(request.json(), fd, sort_keys=True, indent=2,
+                  separators=(',', ': '))
+    return request
+
+def WritePng(request, path):
+    with open(path, 'wb+') as fd:
+        fd.write(request.content)
+
+
+# A simple class to drive testing
+class SkiaServeTester:
+    def __init__(self, url, output_dir):
+        self.url = url
+        self.output_dir = output_dir
+
+        # skp properties
+        self.skp = ''
+        self.skp_name = ''
+
+    def set_skp(self, skp_dir, skp_name):
+        self.skp = skp_dir + '/' + skp_name
+        self.skp_name = skp_name
+
+    def info(self):
+        return Check(requests.get(self.url + '/info'))
+
+    def post(self):
+        with open(self.skp, 'rb') as payload:
+            files = {'file': payload}
+    
+            # upload skp
+            return Check(requests.post(self.url + '/new', files=files))
+
+    def cmd(self):
+        path = self.output_dir + '/' + self.skp_name + '.cmd.json'
+        return WriteJson(Check(requests.get(self.url + '/cmd')), path)
+
+    def img(self):
+        opcount = self.opcount()
+        url = self.url + '/img/' + str(opcount)
+        path = self.output_dir + '/' + self.skp_name + '.png'
+        return WritePng(Check(requests.get(url)), path)
+
+    def enable_gpu(self):
+        return Check(requests.post(self.url + '/enableGPU/1'))
+    
+    def disable_gpu(self):
+        return Check(requests.post(self.url + '/enableGPU/0'))
+
+    def opcount(self):
+        r = self.cmd()
+        return len(r.json()['commands']) - 1 # why the minus 1 here?
+
+def main():
+    parser = argparse.ArgumentParser(description='Tester for SkiaServe')
+    parser.add_argument('--skp_dir', default='skps', type=str)
+    parser.add_argument('--url', default='http://localhost:8888', type=str)
+    parser.add_argument('--output_dir', default='results', type=str)
+    parser.add_argument('--match', default='.*', type=str)
+
+    args = parser.parse_args()
+    skp_dir = args.skp_dir
+    url = args.url
+    output_dir = args.output_dir
+
+    if not os.path.isdir(output_dir):
+        os.makedirs(output_dir)
+
+    skps = []
+    for skp in listdir(skp_dir):
+        if isfile(join(skp_dir, skp)) and re.match(args.match, skp):
+            skps.append(skp)
+
+    tester = SkiaServeTester(url, output_dir)
+
+    for skp_name in skps:
+        tester.set_skp(skp_dir, skp_name)
+        for op in ops:
+            getattr(tester, op)()
+
+if __name__ == "__main__":
+    main()