feat: transfer tool for renaming to workload

Author: anrs

scripts/meta_transfer_as_rename2workload.py

@@ -0,0 +1,263 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+import argparse
+import functools
+import json
+import os
+import sys
+
+import etcd3
+
+def remove_prefix(s, prefix):
+    return s[len(prefix):].lstrip('/') if s.startswith(prefix) else s
+
+def range_prefix(meta, obj_prefix, fn):
+    orig_prefix = os.path.join(meta.orig_root_prefix, obj_prefix)
+
+    for orig_value, orig_meta in meta.etcd.get_prefix(orig_prefix):
+        orig_key = orig_meta.key.decode('utf-8')
+        objname = remove_prefix(orig_key, orig_prefix)
+
+        new_key = fn(objname, orig_value.decode('utf-8'))
+        if new_key:
+            print('convert %s to %s' % (orig_key, new_key))
+
+
+class Pod(object):
+
+    def __init__(self, meta):
+        """initializes a pod transfer"""
+        self.meta = meta
+        self.pod_prefix = 'pod/info'
+        self.range_prefix = functools.partial(range_prefix, self.meta)
+
+    def trans(self):
+        self.range_prefix(self.pod_prefix, self._trans)
+
+    def _trans(self, podname, orig_value):
+        new_key = os.path.join(self.meta.new_root_prefix, self.pod_prefix, podname)
+        self.meta.etcd.put(new_key, orig_value)
+        return new_key
+
+
+class Node(object):
+
+    def __init__(self, meta):
+        """initializes a node transfer"""
+        self.meta = meta
+        self.info_prefix = 'node'
+        self.range_prefix = functools.partial(range_prefix, self.meta, self.info_prefix)
+        self.nodes = {}
+
+    def trans(self):
+        self.range_prefix(self._trans_info)
+        self.range_prefix(self._trans_pod)
+        self.range_prefix(self._trans_cert)
+        self.range_prefix(self._trans_workload)
+
+    def _trans_info(self, nodename, orig_value):
+        # skipping extra info.
+        if ':' in nodename:
+            return
+
+        self.nodes[nodename] = json.loads(orig_value)
+
+        new_key = os.path.join(self.meta.new_root_prefix, self.info_prefix, nodename)
+        self.meta.etcd.put(new_key, orig_value)
+        return new_key
+
+    def _trans_pod(self, node_pod_pair, orig_value):
+        # parsering node-pod-pair itself only
+        if ':pod/' not in node_pod_pair:
+            return
+
+        podname, _, nodename = node_pod_pair.partition(':pod/')
+        if not (podname and nodename):
+            raise ValueError('invalid podname or nodename for %s' % node_pod_pair)
+
+        new_key = os.path.join(self.meta.new_root_prefix, self.info_prefix, '%s:pod' % podname, nodename)
+        self.meta.etcd.put(new_key, orig_value)
+        return new_key
+
+    def _trans_cert(self, cert_key, orig_value):
+        nodename, _, cert_type = cert_key.partition(':')
+
+        # parsering orig_key which ends with :ca, :cert, :key only
+        if cert_type not in ('ca', 'cert', 'key'):
+            return
+
+        new_key = os.path.join(self.meta.new_root_prefix, self.info_prefix, '%s:%s' % (nodename, cert_type))
+        self.meta.etcd.put(new_key, orig_value)
+        return new_key
+
+    def _trans_workload(self, node_wrk_pair, orig_value):
+        nodename, _, wrk_id = node_wrk_pair.partition(':containers/')
+
+        # parsering orig_key which belongs node-workload pair only.
+        if not (nodename and wrk_id):
+            return
+
+        new_key = os.path.join(self.meta.new_root_prefix, self.info_prefix, '%s:worklods' % nodename, wrk_id)
+        wrk = Workload.conv(orig_value, self)
+        self.meta.etcd.put(new_key, json.dumps(wrk))
+        return new_key
+
+    def get_numa_node(self, cpumap, nodename):
+        """ref core types/core.go GetNUMANode func"""
+        numa_node_id = ""
+
+        node = self.nodes.get(nodename)
+        if not node:
+            raise ValueError('invalid nodename %s' % nodename)
+
+        numa = node.get('numa')
+        if not numa:
+            return numa_node_id
+
+        for cpu_id in cpumap:
+            mem_node = numa.get(cpu_id)
+            if not mem_node:
+                continue
+
+            if numa_node_id == '':
+                numa_node_id = mem_node
+            elif numa_node_id != mem_node:
+                numa_node_id = ''
+
+        return numa_node_id
+
+
+class Workload(object):
+
+    def __init__(self, meta, node_transfer):
+        """initializes a workload transfer"""
+        self.meta = meta
+        self.container_prefix = 'containers'
+        self.deploy_prefix = 'deploy'
+        self.range_prefix = functools.partial(range_prefix, self.meta)
+        self.node_transfer = node_transfer
+
+    def trans(self):
+        self.range_prefix(self.container_prefix, self._trans_container)
+        self.range_prefix(self.deploy_prefix, self._trans_deploy)
+
+    def _trans_container(self, wrk_id, orig_value):
+        new_key = os.path.join(self.meta.new_root_prefix, self.container_prefix, wrk_id)
+        wrk = self.conv(orig_value, self.node_transfer)
+        self.meta.etcd.put(new_key, json.dumps(wrk))
+        return new_key
+
+    def _trans_deploy(self, deploy_key, orig_value):
+        parts = deploy_key.split('/')
+        if len(parts) != 4:
+            raise ValueError('invalid deploy key: %s' % deploy_key)
+
+        appname, entrypoint, nodename, wrk_id = parts
+
+        new_key = os.path.join(self.meta.new_root_prefix, self.deploy_prefix, appname, entrypoint, nodename, wrk_id)
+        wrk = self.conv(orig_value, self.node_transfer)
+        self.meta.etcd.put(new_key, json.dumps(wrk))
+
+        return new_key
+
+    @classmethod
+    def conv(cls, orig_value, node_transfer):
+
+        def delete(*keys):
+            for k in keys:
+                try:
+                    del dic[k]
+                except KeyError:
+                    pass
+
+        del_keys = set()
+        def get(new_field, orig_field, transit_field, default=None):
+            value = None
+
+            # don't use dic.get(new_field, dic[orig_field]),
+            # due to there isn't orig_field but has new_field.
+            if new_field in dic:
+                value = dic[new_field]
+            elif transit_field in dic:
+                value = dic[transit_field]
+            else:
+                if default is None:
+                    value = dic[orig_field]
+                else:
+                    value = dic.get(orig_field, default)
+
+            del_keys.update({orig_field, transit_field})
+
+            return value
+
+        dic = json.loads(orig_value)
+        dic['cpu'] = get('CPU', 'cpu', 'CPU')
+
+        dic.update(dict(
+            create_time=1553990400,
+            cpu_quota_request=get('cpu_quota_request', 'quota', 'CPUQuotaRequest'),
+            cpu_quota_limit=get('cpu_quota_limit', 'quota', 'CPUQuotaLimit'),
+            memory_request=get('memory_request', 'memory', 'MemoryRequest'),
+            memory_limit=get('memory_limit', 'memory', 'MemoryLimit'),
+            volume_request=get('volume_request', 'volumes', 'VolumeRequest'),
+            volume_limit=get('volume_limit', 'volumes', 'VolumeLimit'),
+            volume_plan_request=get('volume_plan_request', 'volume_plan', 'VolumePlanRequest', default={}),
+            volume_plan_limit=get('volume_plan_limit', 'volume_plan', 'VolumePlanLimit', default={}),
+            volume_changed=dic.get('volume_changed', False),
+            storage_request=get('storage_request', 'storage', 'StorageRequest'),
+            storage_limit=get('storage_limit', 'storage', 'StorageLimit'),
+        ))
+
+        dic['numa_node'] = ''
+        if dic['cpu'] and node_transfer:
+            numa_node = node_transfer.get_numa_node(dic['cpu'], dic['nodename'])
+            dic['numa_node'] = dic.get('NUMANode', numa_node)
+
+        # don't removing *cpu* from the original dict.
+        try:
+            del_keys.remove('cpu')
+        except KeyError:
+            pass
+
+        del_keys.update({'softlimit', 'VolumeChanged', 'NUMANode'})
+        delete(*list(del_keys))
+
+        return dic
+
+
+class Transfer(object):
+
+    def __init__(self, etcd, orig_root_prefix, new_root_prefix):
+        """initializes a transfer which includes common utilities"""
+        self.etcd = etcd
+        self.orig_root_prefix = orig_root_prefix
+        self.new_root_prefix = new_root_prefix
+
+    def trans(self):
+        Pod(self).trans()
+
+        node_transfer = Node(self)
+        node_transfer.trans()
+
+        Workload(self, node_transfer).trans()
+
+def getargs():
+    ap = argparse.ArgumentParser()
+    ap.add_argument('-o', dest='orig_root_prefix', help='original prefix', default='/eru')
+    ap.add_argument('-n', dest='new_root_prefix', help='new prefix', default='/eru2')
+    ap.add_argument('--etcd-host', default='127.0.0.1')
+    ap.add_argument('--etcd-port', type=int, default=2379)
+    return ap.parse_args()
+
+def connect_etcd(host, port):
+    return etcd3.client(host=host, port=port)
+
+def main():
+    args = getargs()
+    etcd = connect_etcd(args.etcd_host, args.etcd_port)
+    trans = Transfer(etcd, args.orig_root_prefix, args.new_root_prefix)
+    trans.trans()
+    return 0
+
+if __name__ == '__main__':
+    sys.exit(main())

types/resource.go

@@ -23,22 +23,22 @@ type ResourceOptions struct {
 
 // ResourceMeta for messages and workload to store
 type ResourceMeta struct {
-	CPUQuotaRequest float64
-	CPUQuotaLimit   float64
-	CPU             ResourceMap
-	NUMANode        string
-
-	MemoryRequest int64
-	MemoryLimit   int64
-
-	VolumeRequest     VolumeBindings
-	VolumeLimit       VolumeBindings
-	VolumePlanRequest VolumePlan
-	VolumePlanLimit   VolumePlan
-	VolumeChanged     bool
-
-	StorageRequest int64
-	StorageLimit   int64
+	CPUQuotaRequest float64     `json:"cpu_quota_request"`
+	CPUQuotaLimit   float64     `json:"cpu_quota_limit"`
+	CPU             ResourceMap `json:"cpu"`
+	NUMANode        string      `json:"numa_node"`
+
+	MemoryRequest int64 `json:"memory_request"`
+	MemoryLimit   int64 `json:"memory_limit"`
+
+	VolumeRequest     VolumeBindings `json:"volume_request"`
+	VolumeLimit       VolumeBindings `json:"volume_limit"`
+	VolumePlanRequest VolumePlan     `json:"volume_plan_request"`
+	VolumePlanLimit   VolumePlan     `json:"volume_plan_limit"`
+	VolumeChanged     bool           `json:"volume_changed"`
+
+	StorageRequest int64 `json:"storage_request"`
+	StorageLimit   int64 `json:"storage_limit"`
 }
 
 // ResourceType .