Cic meta builds

apps/cic-meta/example/client.py

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+import sys
+import os
+import json
+import logging
+from urllib.request import Request, urlopen
+
+import gnupg
+
+logging.basicConfig(level=logging.DEBUG)
+logg = logging.getLogger()
+
+host = os.environ.get('CIC_META_URL', 'http://localhost:63380')
+
+if len(sys.argv) < 2:
+    sys.stderr.write('Usage: {} <path-to-gpg-private-key>\n'.format(sys.argv[0]))
+    sys.exit(1)
+
+
+# Import PGP key used to sign the data submission
+gpg = gnupg.GPG(gnupghome='/tmp/.gpg')
+f = open(sys.argv[1], 'r')
+key_data = f.read()
+f.close()
+
+gpg.import_keys(key_data)
+gpgk = gpg.list_keys()
+algo = gpgk[0]['algo']
+logg.info('using signing key {} algo {}'.format(gpgk[0]['keyid'], algo))
+
+
+def main():
+
+    # Random key to associate with value
+    # (typically this is some deterministic identifier like sha256(<ethaddress>:cic-person)
+    k = os.urandom(32).hex()
+    url = os.path.join(host, k)
+
+    # Headers required for server-assisted merge operations
+    headers = {
+        'X-CIC-AUTOMERGE': 'server',
+        'Content-Type': 'application/json',
+            }
+
+    # Data to merge
+    data_dict = {
+        'foo': 'bar',
+        'xyzzy': 42,
+            }
+
+    # Send request to server to get initial automerge object and signing material
+    # Server will reply with current state of object merged with ours, but (obviously)
+    # still without a signature.
+    data = json.dumps(data_dict).encode('utf-8')
+    req = Request(url, headers=headers, data=data, method='POST')
+    rs = urlopen(req)
+    logg.info('get sign material response status: {}'.format(rs.status))
+    if rs.status != 200:
+        raise RuntimeError('request failed: {}'.format(rs.reason))
+
+
+    # Sign the provided digest
+    data = rs.read()
+    e = json.loads(data)
+    sig = gpg.sign(e['digest'], passphrase='ge', keyid=gpgk[0]['keyid'])
+
+    # Format data for the content storage request
+    data = {
+            'm': data.decode('utf-8'),
+            's': {
+        'engine': 'pgp',
+        'algo': algo,
+        'data': str(sig),
+        'digest': e['digest'],
+            },
+            }
+
+    # Send storage request to server
+    data = json.dumps(data).encode('utf-8')
+    req = Request(url, headers=headers, data=data, method='PUT')
+    rs = urlopen(req)
+
+    logg.info('signed content submissionstatus: {}'.format(rs.status))
+    if rs.status != 200:
+        raise RuntimeError('request failed: {}'.format(rs.reason))
+
+
+    # Get the latest stored version of the data (without the merge graph)
+    req = Request(url, method='GET')
+    rs = urlopen(req)
+    logg.info('get latest data status: {}'.format(rs.status))
+    if rs.status != 200:
+        raise RuntimeError('request failed: {}'.format(rs.reason))
+
+    print(rs.read().decode('utf-8'))
+
+
+if __name__ == '__main__':
+    main()