From: Brian Warner <warner@allmydata.com>
Date: Wed, 19 Nov 2008 02:11:13 +0000 (-0700)
Subject: cli: factor out slow-http-operation to a separate module
X-Git-Tag: allmydata-tahoe-1.3.0~406
X-Git-Url: https://git.rkrishnan.org/listings/frontends/status?a=commitdiff_plain;h=9c866ada71c5b0f42ae04be8e96beec3838c68d2;p=tahoe-lafs%2Ftahoe-lafs.git

cli: factor out slow-http-operation to a separate module
---

diff --git a/src/allmydata/scripts/slow_operation.py b/src/allmydata/scripts/slow_operation.py
new file mode 100644
index 00000000..1f8a99a1
--- /dev/null
+++ b/src/allmydata/scripts/slow_operation.py
@@ -0,0 +1,74 @@
+
+import os, time
+from allmydata.scripts.common import get_alias, DEFAULT_ALIAS, escape_path
+from allmydata.scripts.common_http import do_http
+from allmydata.util import base32
+import urllib
+import simplejson
+
+class SlowOperationRunner:
+
+    def run(self, options):
+        stderr = options.stderr
+        self.options = options
+        self.ophandle = ophandle = base32.b2a(os.urandom(16))
+        nodeurl = options['node-url']
+        if not nodeurl.endswith("/"):
+            nodeurl += "/"
+        self.nodeurl = nodeurl
+        where = options.where
+        rootcap, path = get_alias(options.aliases, where, DEFAULT_ALIAS)
+        if path == '/':
+            path = ''
+        url = nodeurl + "uri/%s" % urllib.quote(rootcap)
+        if path:
+            url += "/" + escape_path(path)
+        # todo: should it end with a slash?
+        url = self.make_url(url, ophandle)
+        resp = do_http("POST", url)
+        if resp.status not in (200, 302):
+            print >>stderr, "ERROR", resp.status, resp.reason, resp.read()
+            return 1
+        # now we poll for results. We nominally poll at t=1, 5, 10, 30, 60,
+        # 90, k*120 seconds, but if the poll takes non-zero time, that will
+        # be slightly longer. I'm not worried about trying to make up for
+        # that time.
+
+        return self.wait_for_results()
+
+    def poll_times(self):
+        for i in (1,5,10,30,60,90):
+            yield i
+        i = 120
+        while True:
+            yield i
+            i += 120
+
+    def wait_for_results(self):
+        last = 0
+        for next in self.poll_times():
+            delay = next - last
+            time.sleep(delay)
+            last = next
+            if self.poll():
+                return 0
+
+    def poll(self):
+        url = self.nodeurl + "operations/" + self.ophandle
+        url += "?t=status&output=JSON&release-after-complete=true"
+        stdout = self.options.stdout
+        stderr = self.options.stderr
+        resp = do_http("GET", url)
+        if resp.status != 200:
+            print >>stderr, "ERROR", resp.status, resp.reason, resp.read()
+            return True
+        jdata = resp.read()
+        data = simplejson.loads(jdata)
+        if not data["finished"]:
+            return False
+        if self.options.get("raw"):
+            print >>stdout, jdata
+            return True
+        self.write_results(data)
+        return True
+
diff --git a/src/allmydata/scripts/tahoe_manifest.py b/src/allmydata/scripts/tahoe_manifest.py
index 7f3696f3..c7aac42c 100644
--- a/src/allmydata/scripts/tahoe_manifest.py
+++ b/src/allmydata/scripts/tahoe_manifest.py
@@ -1,80 +1,12 @@
 
-import os, time
-from allmydata.scripts.common import get_alias, DEFAULT_ALIAS, escape_path
-from allmydata.scripts.common_http import do_http
 from allmydata.util import base32
 from allmydata import uri
-import urllib
-import simplejson
-
-class SlowOperationRunner:
-
-    def run(self, options):
-        stderr = options.stderr
-        self.options = options
-        self.ophandle = ophandle = base32.b2a(os.urandom(16))
-        nodeurl = options['node-url']
-        if not nodeurl.endswith("/"):
-            nodeurl += "/"
-        self.nodeurl = nodeurl
-        where = options.where
-        rootcap, path = get_alias(options.aliases, where, DEFAULT_ALIAS)
-        if path == '/':
-            path = ''
-        url = nodeurl + "uri/%s" % urllib.quote(rootcap)
-        if path:
-            url += "/" + escape_path(path)
-        # todo: should it end with a slash?
-        url += "?t=%s&ophandle=%s" % (self.operation, ophandle)
-        resp = do_http("POST", url)
-        if resp.status not in (200, 302):
-            print >>stderr, "ERROR", resp.status, resp.reason, resp.read()
-            return 1
-        # now we poll for results. We nominally poll at t=1, 5, 10, 30, 60,
-        # 90, k*120 seconds, but if the poll takes non-zero time, that will
-        # be slightly longer. I'm not worried about trying to make up for
-        # that time.
-
-        return self.wait_for_results()
-
-    def poll_times(self):
-        for i in (1,5,10,30,60,90):
-            yield i
-        i = 120
-        while True:
-            yield i
-            i += 120
-
-    def wait_for_results(self):
-        last = 0
-        for next in self.poll_times():
-            delay = next - last
-            time.sleep(delay)
-            last = next
-            if self.poll():
-                return 0
-
-    def poll(self):
-        url = self.nodeurl + "operations/" + self.ophandle
-        url += "?t=status&output=JSON&release-after-complete=true"
-        stdout = self.options.stdout
-        stderr = self.options.stderr
-        resp = do_http("GET", url)
-        if resp.status != 200:
-            print >>stderr, "ERROR", resp.status, resp.reason, resp.read()
-            return True
-        jdata = resp.read()
-        data = simplejson.loads(jdata)
-        if not data["finished"]:
-            return False
-        if self.options.get("raw"):
-            print >>stdout, jdata
-            return True
-        self.write_results(data)
-        return True
+from allmydata.scripts.slow_operation import SlowOperationRunner
 
 class ManifestGrabber(SlowOperationRunner):
-    operation = "start-manifest"
+
+    def make_url(self, base, ophandle):
+        return base + "?t=start-manifest&ophandle=" + ophandle
 
     def write_results(self, data):
         stdout = self.options.stdout
@@ -97,7 +29,9 @@ def manifest(options):
     return ManifestGrabber().run(options)
 
 class StatsGrabber(SlowOperationRunner):
-    operation = "start-deep-stats"
+
+    def make_url(self, base, ophandle):
+        return base + "?t=start-deep-stats&ophandle=" + ophandle
 
     def write_results(self, data):
         stdout = self.options.stdout