path: root/doc/sphinx/uml/request4-lease.svg

<?xml version="1.0" encoding="UTF-8" standalone="no"?><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentScriptType="application/ecmascript" contentStyleType="text/css" height="2399px" preserveAspectRatio="none" style="width:2294px;height:2399px;" version="1.1" viewBox="0 0 2294 2399" width="2294px" zoomAndPan="magnify"><defs><filter height="300%" id="f5oag86dlpmno" width="300%" x="-1" y="-1"><feGaussianBlur result="blurOut" stdDeviation="2.0"/><feColorMatrix in="blurOut" result="blurOut2" type="matrix" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .4 0"/><feOffset dx="4.0" dy="4.0" in="blurOut2" result="blurOut3"/><feBlend in="SourceGraphic" in2="blurOut3" mode="normal"/></filter></defs><g><text fill="#000000" font-family="sans-serif" font-size="18" lengthAdjust="spacingAndGlyphs" textLength="399" x="938.5" y="17.4023">Allocate a lease for DHCPREQUEST (Kea 1.8.0)</text><!--MD5=[eaee9025590d004dcfc2daa117adb8bb]
cluster check_hint--><rect fill="#FFFFFF" filter="url(#f5oag86dlpmno)" height="378.72" style="stroke: #000000; stroke-width: 1.5;" width="939" x="950" y="248.1992"/><text fill="#000000" font-family="sans-serif" font-size="14" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="180" x="1329.5" y="263.7344">Check requested address</text><!--MD5=[c6fdc214782d2c6b530af6f84e869950]
cluster get_existing--><rect fill="#FFFFFF" filter="url(#f5oag86dlpmno)" height="164.86" style="stroke: #000000; stroke-width: 1.5;" width="245" x="1604" y="347.0592"/><text fill="#000000" font-family="sans-serif" font-size="14" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="229" x="1612" y="362.5944">Get lease for requested address</text><!--MD5=[57e960cb4db100c9a2ccd6f4d6705f05]
cluster check_done--><rect fill="#FFFFFF" filter="url(#f5oag86dlpmno)" height="164.86" style="stroke: #000000; stroke-width: 1.5;" width="161" x="470" y="691.9192"/><text fill="#000000" font-family="sans-serif" font-size="14" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="130" x="485.5" y="707.4544">Check client lease</text><!--MD5=[a6e23b86b5ec2c7080f88f7cf966373c]
cluster new_lease--><rect fill="#FFFFFF" filter="url(#f5oag86dlpmno)" height="1385.08" style="stroke: #000000; stroke-width: 1.5;" width="1138" x="7" y="905.7792"/><text fill="#000000" font-family="sans-serif" font-size="14" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="147" x="502.5" y="921.3144">Allocate a new lease</text><!--MD5=[c0a0058b985d9500e1903c17b16df914]
cluster allocateOrReuseLease4--><rect fill="#FFFFFF" filter="url(#f5oag86dlpmno)" height="685.36" style="stroke: #000000; stroke-width: 1.5;" width="300" x="71" y="1466.4992"/><text fill="#000000" font-family="sans-serif" font-size="14" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="164" x="139" y="1482.0344">Allocate or reuse lease</text><!--MD5=[23478a531f37cd80899cad04cd2b7f18]
cluster allocateUnreservedLease4--><rect fill="#FFFFFF" filter="url(#f5oag86dlpmno)" height="588.22" style="stroke: #000000; stroke-width: 1.5;" width="514" x="411" y="1044.6392"/><text fill="#000000" font-family="sans-serif" font-size="14" font-weight="bold" lengthAdjust="spacingAndGlyphs" textLength="184" x="576" y="1060.1744">Allocate unreserved lease</text><!--MD5=[f07ece90dffecaa599052c39e01a94c5]
entity getReservedLease--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="246" x="1136" y="451.9192"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="226" x="1146" y="475.4544">Check lease for reserved address</text><!--MD5=[8636dd2beae72b933abf12250cfd1025]
entity out_of_pool--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="208" x="1020" y="566.9192"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="188" x="1030" y="590.4544">Check out-of-pool address</text><!--MD5=[ec14e8cae259e632e03b8f7e5f2fa627]
entity existing--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="174" x="1651" y="451.9192"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="154" x="1661" y="475.4544">Check requested lease</text><!--MD5=[0edbe06a49914a247f1c11b045d92815]
entity client_lease--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="108" x="494" y="796.7792"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="88" x="504" y="820.3144">Check renew</text><!--MD5=[66e1e431ca0dbea91ea05cb758558585]
entity create--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="148" x="973" y="1703.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="128" x="983" y="1727.3944">Create a new lease</text><!--MD5=[a85809bef6165a661ce702016b2b24bf]
entity old_lease--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="128" x="747" y="2230.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="108" x="757" y="2254.3944">Delete old lease</text><!--MD5=[3e4eb9e968ddf7eb79447dabaa827d00]
entity candidate--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="153" x="188.5" y="1572.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="133" x="198.5" y="1596.3944">Get candidate lease</text><!--MD5=[3dd4b79f11e480f9e62df46d2d0a412b]
entity reuseExpiredLease4--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="157" x="118.5" y="1703.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="137" x="128.5" y="1727.3944">Reuse expired lease</text><!--MD5=[7989e4485f5064553517c02d5ce8346d]
entity reclaimExpiredLease--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="169" x="111.5" y="1800.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="149" x="121.5" y="1824.3944">Reclaim expired lease</text><!--MD5=[8b161cca1eea0fa2f14429822e5193fc]
entity updateLease4Information--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="192" x="96" y="1897.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="172" x="106" y="1921.3944">update lease information</text><!--MD5=[20b997f41be7d019adfd03f05289a85b]
entity lease4_select--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="163" x="95.5" y="1994.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="143" x="105.5" y="2018.3944">Callout lease4_select</text><path d="M293.5,2000.3592 L293.5,2008.8592 L258.55,2012.8592 L293.5,2016.8592 L293.5,2025.6698 A0,0 0 0 0 293.5,2025.6698 L346.5,2025.6698 A0,0 0 0 0 346.5,2025.6698 L346.5,2010.3592 L336.5,2000.3592 L293.5,2000.3592 A0,0 0 0 0 293.5,2000.3592 " fill="#FBFB77" filter="url(#f5oag86dlpmno)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M336.5,2000.3592 L336.5,2010.3592 L346.5,2010.3592 L336.5,2000.3592 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="32" x="299.5" y="2017.9276">hook</text><!--MD5=[d0c6f6a5b1ca3e5ac503933fbe44aaa9]
entity updateLease4--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="108" x="210" y="2091.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="88" x="220" y="2115.3944">Update lease</text><!--MD5=[8ae068fcc4f60e406016be9ba14134ac]
entity iterate--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="194" x="450" y="1133.4992"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="174" x="460" y="1157.0344">Iterate pools and subnets</text><!--MD5=[cb628e8ea2f367fa2f488bc44b336c46]
entity pick--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="105" x="509.5" y="1246.4992"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="85" x="519.5" y="1270.0344">Pick address</text><!--MD5=[3307242102673314e57f67fe596f1a7c]
entity pick_reserved--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="200" x="640" y="1359.4992"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="180" x="650" y="1383.0344">Check reserved addressed</text><!--MD5=[ac311a8dd9b9ea9d39416a955479a4fe]
entity mt_in_use--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="288" x="506" y="1475.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="268" x="516" y="1499.3944">Check already in use by another thread</text><!--MD5=[3fa202f6559a381d70247672876b819e]
entity pick_lease--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="101" x="476.5" y="1572.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="81" x="486.5" y="1596.3944">Check lease</text><!--MD5=[1213eaa42773f0ba0384c538d3efa224]
entity findClientLease--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="130" x="1383" y="28.1992"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="110" x="1393" y="51.7344">Find client lease</text><path d="M1548,33.6992 L1548,42.1992 L1513.14,46.1992 L1548,50.1992 L1548,59.0098 A0,0 0 0 0 1548,59.0098 L1638,59.0098 A0,0 0 0 0 1638,59.0098 L1638,43.6992 L1628,33.6992 L1548,33.6992 A0,0 0 0 0 1548,33.6992 " fill="#FBFB77" filter="url(#f5oag86dlpmno)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M1628,33.6992 L1628,43.6992 L1638,43.6992 L1628,33.6992 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="69" x="1554" y="51.2676">entry point</text><!--MD5=[0f69bb3143e68c3e4ebf8b928e2a1af4]
entity addressReserved--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="216" x="1615" y="141.1992"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="196" x="1625" y="164.7344">Check requested reservation</text><!--MD5=[f1bd864ca92b3a59ad91e15b6c278a16]
entity hasAddressReservation--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="124" x="1112" y="141.1992"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="104" x="1122" y="164.7344">Get reservation</text><!--MD5=[29cbf9a69668994ea4ff4bb0b8dea6d6]
entity update_hint--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="200" x="1380" y="141.1992"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="180" x="1390" y="164.7344">Update requested address</text><!--MD5=[999fe650e2a9819ebed27de3d290658a]
entity no_lease--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="127" x="1444.5" y="2230.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="107" x="1454.5" y="2254.3944">Return no lease</text><path d="M1607,2236.3592 L1607,2244.8592 L1571.71,2248.8592 L1607,2252.8592 L1607,2261.6698 A0,0 0 0 0 1607,2261.6698 L1689,2261.6698 A0,0 0 0 0 1689,2261.6698 L1689,2246.3592 L1679,2236.3592 L1607,2236.3592 A0,0 0 0 0 1607,2236.3592 " fill="#FBFB77" filter="url(#f5oag86dlpmno)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M1679,2236.3592 L1679,2246.3592 L1689,2246.3592 L1679,2236.3592 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="61" x="1613" y="2253.9276">exit point</text><!--MD5=[45b45980895812fee5a3bd80c1953e7a]
entity renew--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="168" x="971" y="796.7792"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="148" x="981" y="820.3144">Return renewed lease</text><path d="M1174,802.2792 L1174,810.7792 L1139.06,814.7792 L1174,818.7792 L1174,827.5898 A0,0 0 0 0 1174,827.5898 L1256,827.5898 A0,0 0 0 0 1256,827.5898 L1256,812.2792 L1246,802.2792 L1174,802.2792 A0,0 0 0 0 1174,802.2792 " fill="#FBFB77" filter="url(#f5oag86dlpmno)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M1246,802.2792 L1246,812.2792 L1256,812.2792 L1246,802.2792 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="61" x="1180" y="819.8476">exit point</text><!--MD5=[c13398c59c328d6fcc544c8c17f5b117]
entity return--><rect fill="#FEFECE" filter="url(#f5oag86dlpmno)" height="36.4883" style="stroke: #A80036; stroke-width: 1.5;" width="105" x="758.5" y="2345.8592"/><text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="85" x="768.5" y="2369.3944">Return lease</text><path d="M899,2351.3592 L899,2359.8592 L863.66,2363.8592 L899,2367.8592 L899,2376.6698 A0,0 0 0 0 899,2376.6698 L981,2376.6698 A0,0 0 0 0 981,2376.6698 L981,2361.3592 L971,2351.3592 L899,2351.3592 A0,0 0 0 0 899,2351.3592 " fill="#FBFB77" filter="url(#f5oag86dlpmno)" style="stroke: #A80036; stroke-width: 1.0;"/><path d="M971,2351.3592 L971,2361.3592 L981,2361.3592 L971,2351.3592 " fill="#FBFB77" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="61" x="905" y="2368.9276">exit point</text><!--MD5=[58c45ac03f61bca16a2604d1f9090edc]
link findClientLease to addressReserved--><path d="M1490.37,64.2992 C1540.43,84.5092 1623.49,118.0392 1675.64,139.0792 " fill="none" id="findClientLease-&gt;addressReserved" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1680.59,141.0792,1673.7456,133.9973,1675.9546,139.205,1670.7468,141.414,1680.59,141.0792" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="178" x="1602" y="107.7676">has requested address (hint)</text><!--MD5=[3ed98210a29f20764b03cb44cfd671eb]
link findClientLease to hasAddressReservation--><path d="M1405.79,64.2992 C1355.91,84.5092 1273.15,118.0392 1221.19,139.0792 " fill="none" id="findClientLease-&gt;hasAddressReservation" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1216.26,141.0792,1226.1032,141.414,1220.8954,139.205,1223.1044,133.9973,1216.26,141.0792" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="172" x="1328" y="107.7676">no requested address (hint)</text><!--MD5=[0f8169b991248aaf1e86d3e126ee7fc7]
link addressReserved to check_hint--><path d="M1706.14,177.5692 C1690.855,193.3142 1667.81,217.0567 1648.3475,237.1092 C1645.9147,239.6158 1643.5379,242.0647 1641.2391,244.4331 C1640.0898,245.6173 1638.96,246.7814 1637.8525,247.9225 " fill="none" id="addressReserved-&gt;check_hint" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1637.8525,247.9225,1646.991,244.2501,1641.3348,244.3346,1641.2503,238.6783,1637.8525,247.9225" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="162" x="1675" y="220.7676">no conflicting reservation</text><!--MD5=[afeb447a9f6636bece5d73dd5d09cefa]
link addressReserved to no_lease--><path d="M1831.12,176.2492 C1928.35,193.8192 2056,226.1192 2056,274.5592 C2056,274.5592 2056,274.5592 2056,2110.8592 C2056,2245.5392 1894.72,2159.4592 1764,2191.8592 C1729.14,2200.4992 1639.9,2219.7792 1576.62,2233.2992 " fill="none" id="addressReserved-&gt;no_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1571.73,2234.3392,1581.3655,2236.3781,1576.6205,2233.2984,1579.7002,2228.5534,1571.73,2234.3392" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="225" x="2057" y="1213.0676">reservation owned by another client</text><!--MD5=[961d5a31619e7d456669487d013a1899]
link hasAddressReservation to update_hint--><path d="M1236.29,159.1992 C1276.08,159.1992 1328.68,159.1992 1374.83,159.1992 " fill="none" id="hasAddressReservation-&gt;update_hint" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1379.85,159.1992,1370.85,155.1992,1374.85,159.1992,1370.85,163.1992,1379.85,159.1992" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="107" x="1254.5" y="152.7676">has a reservation</text><!--MD5=[05586e2e35799af932c772159165fde5]
link update_hint to check_hint--><path d="M1480.56,177.2992 C1481.87,191.3892 1485.77,211.1092 1497,224.1992 C1501.4688,229.4105 1506.5789,234.1017 1512.105,238.322 C1514.868,240.4322 1517.735,242.4246 1520.6778,244.3054 C1522.1492,245.2458 1523.6395,246.1583 1525.1453,247.0437 C1525.5217,247.2651 1525.8991,247.4847 1526.2774,247.7027 C1526.4666,247.8117 1526.656,247.9202 1526.8456,248.0284 " fill="none" id="update_hint-&gt;check_hint" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1526.8456,248.0284,1521.0095,240.0949,1522.5024,245.5512,1517.046,247.044,1526.8456,248.0284" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="157" x="1498" y="220.7676">request reserved address</text><!--MD5=[f5740591afdec92972eb12364704fbda]
link hasAddressReservation to check_done--><path d="M1111.78,160.2292 C968.42,161.9792 627,176.4492 627,274.5592 C627,274.5592 627,274.5592 627,585.9192 C627,614.8842 626.03,647.4017 625.045,672.958 C624.7987,679.347 624.5516,685.301 624.3184,690.6556 C624.3038,690.9903 624.2893,691.3226 624.2748,691.6526 " fill="none" id="hasAddressReservation-&gt;check_done" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="624.2748,691.6526,628.6651,682.8364,624.4938,686.6574,620.6728,682.486,624.2748,691.6526" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="90" x="628" y="418.4876">no reservation</text><!--MD5=[05b1cca34cf1798b13fb9b06f5ca5f3a]
link check_hint to get_existing--><path d="M1612,276.1292 C1612,277.5792 1612,301.1692 1612,324.7542 C1612,330.6505 1612,336.5464 1612,342.096 C1612,343.4834 1612,344.8492 1612,346.1879 C1612,346.3552 1612,346.5221 1612,346.6886 " fill="none" id="check_hint-&gt;get_existing" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1612,346.6886,1616,337.6886,1612,341.6886,1608,337.6886,1612,346.6886" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[a6e7bc949cef76964a3dcada3d94e736]
link get_existing to existing--><path d="M1612.09,374.9892 C1614.74,376.9592 1674.43,421.4892 1710.66,448.5192 " fill="none" id="get_existing-&gt;existing" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1714.95,451.7292,1710.1157,443.1485,1710.938,448.7452,1705.3413,449.5676,1714.95,451.7292" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="124" x="1676" y="418.4876">has requested lease</text><!--MD5=[86bae6c5db5c6e2b2f64eec8702a172a]
link existing to no_lease--><path d="M1738,488.1492 C1738,510.3092 1738,549.9792 1738,583.9192 C1738,583.9192 1738,583.9192 1738,2110.8592 C1738,2169.0192 1692.68,2170.6192 1643,2200.8592 C1622.7,2213.2092 1598.7,2222.8992 1576.6,2230.1892 " fill="none" id="existing-&gt;no_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1571.62,2231.7992,1581.415,2232.8276,1576.3761,2230.2567,1578.947,2225.2178,1571.62,2231.7992" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="263" x="1739" y="1382.5676">not expired lease owned by another client</text><!--MD5=[d1913c1ad5468c4f26e27e58c8f67311]
link get_existing to out_of_pool--><path d="M1603.5702,375.107 C1603.282,375.1139 1602.9868,375.1209 1602.6847,375.1282 C1602.0805,375.1427 1601.4485,375.158 1600.7892,375.1741 C1599.4706,375.2063 1598.043,375.2417 1596.5101,375.2804 C1593.4444,375.3579 1589.9579,375.4487 1586.0818,375.5535 C1570.5772,375.973 1548.8378,376.6183 1522.855,377.543 C1470.8894,379.3923 1401.95,382.3592 1331.9675,386.8717 C1192.0025,395.8967 1047.865,411.1042 1027,435.9192 C1000.68,467.2192 1006.56,492.5092 1027,527.9192 C1036.33,544.0792 1052.3,555.9992 1068.62,564.5792 " fill="none" id="get_existing-&gt;out_of_pool" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1073.22,566.9092,1066.998,559.2747,1068.7594,564.6503,1063.3837,566.4117,1073.22,566.9092" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="90" x="1028" y="474.9876">no reservation</text><!--MD5=[d1913c1ad5468c4f26e27e58c8f67311]
link get_existing to out_of_pool--><path d="M1603.8377,376.8955 C1603.4057,377.006 1602.9584,377.1212 1602.4962,377.2411 C1600.6472,377.7206 1598.5597,378.2751 1596.2617,378.9056 C1587.0697,381.4277 1574.5094,385.1648 1560.3738,390.173 C1532.1025,400.1892 1497.53,415.2892 1471,435.9192 C1430.23,467.6192 1443.85,500.6192 1400,527.9192 C1350.34,558.8392 1286.82,573.0892 1233.23,579.4992 " fill="none" id="get_existing-&gt;out_of_pool-1" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1228.08,580.0892,1237.4862,583.0087,1233.0457,579.5042,1236.5502,575.0636,1228.08,580.0892" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="162" x="1472" y="474.9876">has requested reservation</text><!--MD5=[a80af0ff9802cb26b63fe0e5cdeeb896]
link get_existing to getReservedLease--><path d="M1603.7999,374.8934 C1603.5697,374.893 1603.3349,374.8927 1603.0956,374.8923 C1602.6171,374.8916 1602.1205,374.891 1601.6064,374.8904 C1599.5497,374.8882 1597.2106,374.8875 1594.61,374.8892 C1584.2075,374.8962 1569.6199,374.9436 1552.1798,375.1011 C1517.2997,375.4161 1471.0094,376.1717 1423.9688,377.9267 C1329.8875,381.4367 1232.805,388.9442 1218,404.9192 C1205.95,417.9192 1217.84,434.9092 1231.87,448.1092 " fill="none" id="get_existing-&gt;getReservedLease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1235.86,451.7292,1231.8826,442.7192,1232.1571,448.3694,1226.5069,448.6439,1235.86,451.7292" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="223" x="1219" y="418.4876">has reservation for another address</text><!--MD5=[460f9433d097e6134b488e2edc059749]
link getReservedLease to no_lease--><path d="M1298.31,487.9392 C1370.31,519.1292 1516,582.4492 1516,583.9192 C1516,583.9192 1516,583.9192 1516,1321.9992 C1516,1356.7992 1520.59,1368.8792 1543,1395.4992 C1560.18,1415.9092 1578.19,1404.7792 1595,1425.4992 C1614.84,1449.9592 1617,1461.3692 1617,1492.8592 C1617,1492.8592 1617,1492.8592 1617,2110.8592 C1617,2161.3292 1571.14,2203.9592 1538.92,2227.6992 " fill="none" id="getReservedLease-&gt;no_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1534.66,2230.7792,1544.2952,2228.7389,1538.7092,2227.846,1539.6021,2222.2601,1534.66,2230.7792" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="150" x="1544" y="1382.5676">no active reserved lease</text><!--MD5=[e9bc3bd5a379396c200e43b0baf79c85]
link getReservedLease to out_of_pool--><path d="M1238.5,488.0792 C1214.41,508.2392 1174.48,541.6692 1148.71,563.2392 " fill="none" id="getReservedLease-&gt;out_of_pool" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1144.7,566.5992,1154.1757,563.9139,1148.5423,563.3997,1149.0565,557.7663,1144.7,566.5992" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[e17e653abfe61c21e03d310137f9f5d3]
link out_of_pool to check_done--><path d="M1094.93,603.0392 C1061.57,621.9092 1004.65,651.7292 952,667.9192 C882.41,689.3242 801.6225,701.8592 737.5188,709.0692 C705.4669,712.6742 677.5859,714.948 657.3611,716.3336 C647.2487,717.0264 639.0503,717.4972 633.2015,717.8013 C632.4705,717.8393 631.7761,717.8748 631.1193,717.9077 " fill="none" id="out_of_pool-&gt;check_done" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="631.1193,717.9077,640.3082,721.4522,636.113,717.6574,639.9078,713.4622,631.1193,717.9077" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="280" x="997" y="664.4876">owned reservation for the requested address</text><!--MD5=[e17e653abfe61c21e03d310137f9f5d3]
link out_of_pool to check_done--><path d="M1019.57,594.3492 C910.87,604.4092 748.83,623.3992 693,650.9192 C674.24,660.1642 657.23,676.2567 644.6763,690.3942 C641.5378,693.9286 638.6779,697.3408 636.1388,700.4932 C634.8692,702.0695 633.6798,703.5808 632.576,705.0099 C632.3,705.3672 632.0294,705.7194 631.7642,706.0662 C631.6316,706.2395 631.5003,706.4116 631.3705,706.5822 C631.3055,706.6675 631.2409,706.7525 631.1767,706.8371 " fill="none" id="out_of_pool-&gt;check_done-1" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="631.1767,706.8371,639.8049,702.088,634.2002,702.8549,633.4333,697.2503,631.1767,706.8371" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="249" x="694" y="664.4876">requested address is in allowed an pool</text><!--MD5=[7bd3c3d867479d62123546af0a0eba34]
link out_of_pool to no_lease--><path d="M1203.74,602.9892 C1232.91,612.7492 1264.1,627.8392 1286,650.9192 C1307.77,673.8692 1309,686.6492 1309,718.2792 C1309,718.2792 1309,718.2792 1306,1434.9992 C1306,1673.5792 1398,1725.2792 1398,1963.8592 C1398,1963.8592 1398,1963.8592 1398,2110.8592 C1398,2161.5092 1444.28,2204.0892 1476.8,2227.7592 " fill="none" id="out_of_pool-&gt;no_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1481.09,2230.8292,1476.0801,2222.3498,1477.0175,2227.9284,1471.4388,2228.8658,1481.09,2230.8292" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="283" x="1310" y="1439.0676">address not reserved and not in allowed pool</text><!--MD5=[285a75cccafb8a8e1e8a8d054b6bd861]
link check_done to client_lease--><path d="M622.95,719.8492 C621.39,721.7992 586.7,765.2692 565.07,792.3792 " fill="none" id="check_done-&gt;client_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="561.72,796.5892,570.4617,792.0524,564.84,792.6821,564.2103,787.0604,561.72,796.5892" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="108" x="600" y="763.3476">has a client lease</text><!--MD5=[69a418bc3ca1e1b953129b8feacd7c7c]
link client_lease to renew--><path d="M602.26,814.7792 C689.18,814.7792 860.52,814.7792 965.69,814.7792 " fill="none" id="client_lease-&gt;renew" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="970.96,814.7792,961.96,810.7792,965.96,814.7792,961.96,818.7792,970.96,814.7792" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="332" x="620.5" y="808.3476">requested address was already assigned to the client</text><!--MD5=[82bd19346130f27c4982b22ea05f0ccb]
link client_lease to new_lease--><path d="M547.85,832.9492 C547.715,848.8792 547.5075,873.1567 547.3313,893.7055 C547.3092,896.2741 547.2877,898.7844 547.2668,901.2129 C547.2564,902.4271 547.2461,903.6209 547.2361,904.7913 C547.2336,905.0839 547.2311,905.375 547.2286,905.6646 " fill="none" id="client_lease-&gt;new_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="547.2286,905.6646,551.3058,896.6993,547.2715,900.6648,543.3061,896.6306,547.2286,905.6646" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[f19fad7ef643a710f1fa744c146e27e1]
link new_lease to allocateOrReuseLease4--><path d="M546.94,933.6392 C542.11,933.4192 233,919.8692 233,1070.9992 C233,1070.9992 233,1070.9992 233,1378.4992 C233,1403.8242 237.36,1431.9242 241.7888,1453.9317 C242.3423,1456.6827 242.897,1459.3384 243.4444,1461.8816 C243.7181,1463.1532 243.9899,1464.3967 244.2589,1465.6099 C244.2925,1465.7616 244.3261,1465.9127 244.3596,1466.0634 " fill="none" id="new_lease-&gt;allocateOrReuseLease4" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="244.3596,1466.0634,246.3094,1456.4095,243.2737,1461.1828,238.5004,1458.147,244.3596,1466.0634" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="152" x="234" y="1213.0676">has a requested address</text><!--MD5=[1e19bcf55215d199025544543592d337]
link new_lease to allocateUnreservedLease4--><path d="M547,933.7392 C547,935.7842 547,969.0667 547,1002.3417 C547,1010.6605 547,1018.9788 547,1026.8084 C547,1030.7232 547,1034.5158 547,1038.1252 C547,1039.93 547,1041.6889 547,1043.3944 C547,1043.6076 547,1043.8199 547,1044.0314 " fill="none" id="new_lease-&gt;allocateUnreservedLease4" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="547,1044.0314,551,1035.0314,547,1039.0314,543,1035.0314,547,1044.0314" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="135" x="548" y="977.2076">no requested address</text><!--MD5=[2c84e3b0a8d19577f3d2d8902e61dda6]
link allocateOrReuseLease4 to candidate--><path d="M251.01,1494.9292 C251.3,1496.8792 257.62,1539.7592 261.66,1567.2092 " fill="none" id="allocateOrReuseLease4-&gt;candidate" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="262.44,1572.4792,265.0848,1562.9921,261.7109,1567.5327,257.1703,1564.1587,262.44,1572.4792" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[a5e8e7e456414e548f2004cb6dbe84b6]
link candidate to reuseExpiredLease4--><path d="M255.97,1608.9892 C243.73,1632.2192 221.85,1673.7092 208.46,1699.1092 " fill="none" id="candidate-&gt;reuseExpiredLease4" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="206.07,1703.6592,213.799,1697.5549,208.397,1699.2337,206.7181,1693.8317,206.07,1703.6592" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="148" x="230" y="1670.4276">expired candidate lease</text><!--MD5=[d2a65277aca220a8b88ff33e161a522b]
link candidate to no_lease--><path d="M300.41,1608.9492 C331,1622.7292 376.81,1641.0592 419,1648.8592 C438.61,1652.4892 1119.78,1646.7992 1137,1656.8592 C1165.37,1673.4392 1174,1687.9992 1174,1720.8592 C1174,1720.8592 1174,1720.8592 1174,2110.8592 C1174,2167.7192 1341.77,2212.7992 1439.5,2234.2292 " fill="none" id="candidate-&gt;no_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1444.39,2235.2992,1436.4557,2229.4642,1439.5061,2234.2282,1434.7421,2237.2785,1444.39,2235.2992" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="169" x="1175" y="1920.9276">conflicting candidate lease</text><!--MD5=[7d0ea550df801bc4f2e5d77c4007fd73]
link candidate to create--><path d="M302.78,1608.8892 C333.47,1621.9592 378.19,1639.3492 419,1648.8592 C452.51,1656.6692 461.8,1653.0992 496,1656.8592 C663.96,1675.3392 860.53,1698.5492 967.59,1711.3292 " fill="none" id="candidate-&gt;create" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="972.62,1711.9292,964.1641,1706.8797,967.656,1711.3301,963.2056,1714.822,972.62,1711.9292" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="117" x="634" y="1670.4276">no candidate lease</text><!--MD5=[41d477ba3ffb73c8ff7e1f8771a2bc5c]
link reuseExpiredLease4 to reclaimExpiredLease--><path d="M196.82,1740.2792 C196.65,1755.8192 196.41,1778.6392 196.24,1795.5192 " fill="none" id="reuseExpiredLease4-&gt;reclaimExpiredLease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="196.18,1800.5492,200.2572,1791.5839,196.223,1795.5494,192.2575,1791.5152,196.18,1800.5492" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[6426546e78ac0ba7440fd3d40f44ede2]
link reclaimExpiredLease to updateLease4Information--><path d="M195.27,1837.2792 C194.61,1852.8192 193.65,1875.6392 192.94,1892.5192 " fill="none" id="reclaimExpiredLease-&gt;updateLease4Information" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="192.73,1897.5492,197.0865,1888.7163,192.9298,1892.5532,189.0929,1888.3965,192.73,1897.5492" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[a62828ac2ba9e6deab1d38c41c6a28c7]
link updateLease4Information to lease4_select--><path d="M189.25,1934.2792 C186.8,1949.8192 183.19,1972.6392 180.53,1989.5192 " fill="none" id="updateLease4Information-&gt;lease4_select" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="179.73,1994.5492,185.097,1986.2912,180.5172,1989.6116,177.1968,1985.0317,179.73,1994.5492" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[8451cb76573000a7f0f17878defd5d68]
link lease4_select to no_lease--><path d="M256.64,2030.8892 C422.11,2065.8992 815.39,2147.1692 1148,2200.8592 C1249.02,2217.1692 1366.7,2231.6892 1439.28,2240.1392 " fill="none" id="lease4_select-&gt;no_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="1444.43,2240.7392,1435.9456,2235.7377,1439.4627,2240.1683,1435.0321,2243.6853,1444.43,2240.7392" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="26" x="1090" y="2114.9276">SKIP</text><!--MD5=[6d30d4fb129fbbb4308e51704d598b83]
link lease4_select to updateLease4--><path d="M187.75,2031.0092 C194.04,2040.4992 202.41,2052.2792 211,2061.8592 C219.4,2071.2392 229.56,2080.6292 238.73,2088.5292 " fill="none" id="lease4_select-&gt;updateLease4" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="242.59,2091.8092,238.3406,2082.9243,238.7867,2088.5635,233.1474,2089.0096,242.59,2091.8092" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[f38e7914af006d3091e34eae716cf611]
link updateLease4 to old_lease--><path d="M271.13,2128.1092 C280.01,2147.2092 297.1,2177.2192 322,2191.8592 C391.49,2232.7292 624.21,2243.7792 741.78,2246.7592 " fill="none" id="updateLease4-&gt;old_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="746.95,2246.8892,738.0438,2242.6846,741.9513,2246.775,737.8609,2250.6825,746.95,2246.8892" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[9b569e4e69bfc07b8f4591db492d7934]
link allocateUnreservedLease4 to iterate--><path d="M547,1072.5592 C547,1074.0692 547,1105.5792 547,1128.0692 " fill="none" id="allocateUnreservedLease4-&gt;iterate" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="547,1133.2792,551,1124.2792,547,1128.2792,543,1124.2792,547,1133.2792" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[913c99c1aa5de4d885de0fade3210176]
link iterate to pick--><path d="M549.34,1169.8392 C551.94,1189.0692 556.14,1220.1292 558.98,1241.1592 " fill="none" id="iterate-&gt;pick" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="559.67,1246.2792,562.4258,1236.8238,558.9989,1241.3245,554.4982,1237.8975,559.67,1246.2792" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[98fd2d33f60f8d171595f3ad38490357]
link pick to pick_reserved--><path d="M614.74,1276.6292 C662.69,1287.2492 727.13,1302.9992 735,1312.4992 C744.41,1323.8692 745.43,1340.5992 744.21,1354.0992 " fill="none" id="pick-&gt;pick_reserved" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="743.62,1359.2892,748.6002,1350.7923,744.1784,1354.3205,740.6502,1349.8988,743.62,1359.2892" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[40bbb0c51a3c4e170e8c88288f4abbc7]
reverse link iterate to pick_reserved--><path d="M587.85,1171.9592 C635.04,1196.9992 710.25,1245.3892 742,1312.4992 C748.94,1327.1692 747.31,1345.9192 744.63,1359.3292 " fill="none" id="iterate&lt;-pick_reserved" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="583.37,1169.6092,589.4641,1177.3463,587.7924,1171.9421,593.1966,1170.2704,583.37,1169.6092" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="214" x="723" y="1269.5676">address reserved to another client</text><!--MD5=[d452465c31c3e200782285fc87364de7]
link pick_reserved to mt_in_use--><path d="M726.33,1395.8692 C710.31,1416.2192 683.78,1449.9292 666.6,1471.7692 " fill="none" id="pick_reserved-&gt;mt_in_use" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="663.5,1475.6992,672.2152,1471.1118,666.5973,1471.7741,665.935,1466.1561,663.5,1475.6992" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[0d2cb4b21f131724b772926f54d8c5a6]
reverse link iterate to mt_in_use--><path d="M525.22,1173.1292 C491.49,1207.6292 434.06,1278.2892 470,1329.4992 C492.53,1361.6092 521.64,1335.9392 553,1359.4992 C595.57,1391.4892 627.49,1447.3892 641.76,1475.5692 " fill="none" id="iterate&lt;-mt_in_use" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="528.81,1169.5092,519.6392,1173.1004,525.296,1173.0661,525.3302,1178.7229,528.81,1169.5092" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="255" x="471" y="1326.0676">address already in use by another thread</text><!--MD5=[bc2a6c320076cde845cfe5f7d4f3068f]
link mt_in_use to pick_lease--><path d="M627.73,1512.0592 C606.74,1528.2692 575.3,1552.5592 553.13,1569.6792 " fill="none" id="mt_in_use-&gt;pick_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="549.11,1572.7792,558.6776,1570.4423,553.0667,1569.7224,553.7867,1564.1115,549.11,1572.7792" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[2a521ba838ca3ea39c3c98b97230fab1]
reverse link iterate to pick_lease--><path d="M513.37,1172.6092 C502.3,1180.1892 490.42,1189.4392 481,1199.4992 C464.23,1217.4192 458.7,1222.8892 452,1246.4992 C435.76,1303.7492 469.06,1455.4492 488,1511.8592 C495.37,1533.8192 507.86,1557.3892 516.72,1572.7992 " fill="none" id="iterate&lt;-pick_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="517.73,1169.6792,508.0294,1171.3818,513.5808,1172.4692,512.4934,1178.0206,517.73,1169.6792" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="73" x="461" y="1382.5676">active lease</text><!--MD5=[63357d070723cd23e47a694c7dc5adee]
link pick_lease to reuseExpiredLease4--><path d="M486.46,1608.9192 C461.21,1620.5292 428.75,1637.3192 403,1656.8592 C394.74,1663.1292 395.96,1668.6192 387,1673.8592 C377.25,1679.5592 326.42,1692.0092 279.78,1702.6592 " fill="none" id="pick_lease-&gt;reuseExpiredLease4" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="274.7,1703.8192,284.3588,1705.7447,279.5779,1702.721,282.6016,1697.9401,274.7,1703.8192" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="83" x="404" y="1670.4276">expired lease</text><!--MD5=[cf9da26e069a0df2c62fe2799950086c]
link pick_lease to create--><path d="M577.81,1604.4592 C670.26,1627.3992 866.3,1676.0292 973.39,1702.5992 " fill="none" id="pick_lease-&gt;create" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="978.42,1703.8492,970.6421,1697.8074,973.5659,1702.65,968.7233,1705.5738,978.42,1703.8492" style="stroke: #A80036; stroke-width: 1.0;"/><text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="52" x="849" y="1670.4276">no lease</text><!--MD5=[64e111b9225aa9d21cd5edaf123c77e3]
link create to old_lease--><path d="M1027.36,1740.0192 C1009.53,1757.5992 986,1786.6992 986,1817.8592 C986,1817.8592 986,1817.8592 986,2110.8592 C986,2170.8492 921.44,2208.5092 870.75,2228.8292 " fill="none" id="create-&gt;old_lease" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="865.89,2230.7392,875.7293,2231.1732,870.5441,2228.9118,872.8055,2223.7267,865.89,2230.7392" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[f504166a5b4bb527b5be2231a925b659]
link old_lease to return--><path d="M811,2267.0192 C811,2286.5992 811,2318.6892 811,2340.2892 " fill="none" id="old_lease-&gt;return" style="stroke: #A80036; stroke-width: 1.0;"/><polygon fill="#A80036" points="811,2345.5392,815,2336.5392,811,2340.5392,807,2336.5392,811,2345.5392" style="stroke: #A80036; stroke-width: 1.0;"/><!--MD5=[1b4d46ef90f054326099bee1d7a95d46]
@startuml

title Allocate a lease for DHCPREQUEST (Kea 1.8.0)

agent "Find client lease" as findClientLease
note right : entry point

agent "Check requested reservation" as addressReserved

agent "Get reservation" as hasAddressReservation

agent "Update requested address" as update_hint

rectangle "Check requested address" as check_hint {
 rectangle "Get lease for requested address" as get_existing {
  agent "Check requested lease" as existing
 }

 agent "Check lease for reserved address" as getReservedLease

 agent "Check out-of-pool address" as out_of_pool
}

rectangle "Check client lease" as check_done {
 agent "Check renew" as client_lease
}

rectangle "Allocate a new lease" as new_lease {
 together {
  rectangle "Allocate or reuse lease" as allocateOrReuseLease4 {
   agent "Get candidate lease" as candidate

   agent "Reuse expired lease" as reuseExpiredLease4

   agent "Reclaim expired lease" as reclaimExpiredLease

   agent "update lease information" as updateLease4Information

   agent "Callout lease4_select" as lease4_select
   note right : hook

   agent "Update lease" as updateLease4
  }

  rectangle "Allocate unreserved lease" as allocateUnreservedLease4 {
   agent "Iterate pools and subnets" as iterate

   agent "Pick address" as pick

   agent "Check reserved addressed" as pick_reserved

   agent "Check already in use by another thread" as mt_in_use

   agent "Check lease" as pick_lease
  }
 }

 agent "Create a new lease" as create

 agent "Delete old lease" as old_lease
}

agent "Return no lease" as no_lease
note right : exit point

agent "Return renewed lease" as renew
note right : exit point

agent "Return lease" as return
note right : exit point

findClientLease - -> addressReserved : has requested address (hint)
findClientLease - -> hasAddressReservation : no requested address (hint)
addressReserved - -> check_hint : no conflicting reservation
addressReserved - -> no_lease : reservation owned by another client
hasAddressReservation -> update_hint : has a reservation
update_hint - -> check_hint : request reserved address
hasAddressReservation - -> check_done : no reservation
check_hint - -> get_existing
get_existing - -> existing : has requested lease
existing - - -> no_lease : not expired lease owned by another client
get_existing - -> out_of_pool : no reservation
get_existing - -> out_of_pool : has requested reservation
get_existing - -> getReservedLease : has reservation for another address
getReservedLease - - -> no_lease : no active reserved lease
getReservedLease - -> out_of_pool
out_of_pool - -> check_done : owned reservation for the requested address
out_of_pool - -> check_done : requested address is in allowed an pool
out_of_pool - -> no_lease : address not reserved and not in allowed pool
check_done - -> client_lease : has a client lease
client_lease -> renew : requested address was already assigned to the client
client_lease - -> new_lease
new_lease - -> allocateOrReuseLease4 : has a requested address
new_lease - -> allocateUnreservedLease4 : no requested address
allocateOrReuseLease4 - -> candidate
candidate - -> reuseExpiredLease4 : expired candidate lease
candidate - -> no_lease : conflicting candidate lease
candidate - -> create : no candidate lease
reuseExpiredLease4 - -> reclaimExpiredLease
reclaimExpiredLease - -> updateLease4Information
updateLease4Information - -> lease4_select
lease4_select - - -> no_lease : SKIP
lease4_select - -> updateLease4
updateLease4 - -> old_lease
allocateUnreservedLease4 - -> iterate
iterate - -> pick
pick - -> pick_reserved
pick_reserved -up-> iterate : address reserved to another client
pick_reserved - -> mt_in_use
mt_in_use -up-> iterate : address already in use by another thread
mt_in_use - -> pick_lease
pick_lease -up-> iterate : active lease
pick_lease - -> reuseExpiredLease4 : expired lease
pick_lease - -> create : no lease
create - -> old_lease
old_lease - -> return

@enduml

PlantUML version 1.2020.15(Sun Jun 28 13:39:45 CEST 2020)
(GPL source distribution)
Java Runtime: OpenJDK Runtime Environment
JVM: OpenJDK 64-Bit Server VM
Default Encoding: UTF-8
Language: en
Country: US
--></g></svg>