java/src/main/com/google/appengine/tools/appstats/StaticRpcOperationCostManager.java

   1 // Copyright 2012 Google Inc. All Rights Reserved.
   2 package com.google.appengine.tools.appstats;
   3
   4 import static com.google.appengine.tools.appstats.StatsProtos.BilledOpProto.BilledOp.CHANNEL_OPEN;
   5 import static com.google.appengine.tools.appstats.StatsProtos.BilledOpProto.BilledOp.CHANNEL_PRESENCE;
   6 import static com.google.appengine.tools.appstats.StatsProtos.BilledOpProto.BilledOp.DATASTORE_READ;
   7 import static com.google.appengine.tools.appstats.StatsProtos.BilledOpProto.BilledOp.DATASTORE_SMALL;
   8 import static com.google.appengine.tools.appstats.StatsProtos.BilledOpProto.BilledOp.DATASTORE_WRITE;
   9 import static com.google.appengine.tools.appstats.StatsProtos.BilledOpProto.BilledOp.MAIL_RECIPIENT;
  10 import static com.google.appengine.tools.appstats.StatsProtos.BilledOpProto.BilledOp.XMPP_STANZA;
  11
  12 import com.google.appengine.tools.appstats.StatsProtos.BilledOpProto.BilledOp;
  13 import com.google.common.collect.Maps;
  14
  15 import java.util.Map;
  16
  17 /**
  18  * {@link RpcOperationCostManager} implementation with all the costs hard-coded.
  19  *
  20  */
  21 class StaticRpcOperationCostManager implements RpcOperationCostManager {
  22
  23   private static final long MILLION = 1000000;
  24   private static final long PER_HUNDRED_THOUSAND = MILLION / 100000;
  25   private static final long PER_THOUSAND = MILLION / 1000;
  26   private static final long PER_HUNDRED = MILLION / 100;
  27
  28   static final Map<BilledOp, Long> COST_MAP;
  29
  30   static {
  31     COST_MAP = Maps.newHashMap();
  32
  33     COST_MAP.put(DATASTORE_READ, perHundredThousand(7));
  34
  35     COST_MAP.put(DATASTORE_WRITE, perHundredThousand(10));
  36
  37     COST_MAP.put(DATASTORE_SMALL, perHundredThousand(1));
  38
  39     COST_MAP.put(MAIL_RECIPIENT, perThousand(1));
  40
  41     COST_MAP.put(CHANNEL_OPEN, perHundred(1));
  42
  43     COST_MAP.put(XMPP_STANZA, perHundredThousand(10));
  44
  45     COST_MAP.put(CHANNEL_PRESENCE, 0L);
  46   }
  47
  48   private static long perHundredThousand(long centsPerHundredThousand) {
  49     return centsPerHundredThousand * PER_HUNDRED_THOUSAND;
  50
  51   }
  52
  53   private static long perThousand(long centsPerThousand) {
  54     return centsPerThousand * PER_THOUSAND;
  55
  56   }
  57
  58   private static long perHundred(long centsPerHundred) {
  59     return centsPerHundred * PER_HUNDRED;
  60
  61   }
  62
  63   @Override
  64   public long costOf(BilledOp op) {
  65     return COST_MAP.get(op);
  66   }
  67 }