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