A Security-Awareness Virtual Machine Management Scheme Based on Chinese Wall Policy in Cloud Computing

Algorithm 1

VMs placement solution calculated algorithm.

input:  id, ur, 𝐴, acir

output:   𝐴

(1)   IF(aiar==NULL)

(2)    𝐴[𝑚,𝑛+1]=𝐮𝐩𝐝𝐚𝐭𝐞(𝐴[𝑚,𝑛]);

(3)    𝑎(∗,𝑛+1)=0;

(4)    ℎ_𝑥=  firstFitHost(id, 𝐴);

(5)    aiar=getAiar(id, ℎ_𝑥);

(6)    cHosts=getCandHosts(aiar, 𝐴);

(7)   ELSE

(8)    IF(newUser (id))

(9)   cHosts=getCandHosts(aiar, 𝐴);

(10)  ELSE

(11)   cHosts = getCandHosts(id, acir, 𝐴);

(12)  ENDIF

(13) ENDIF

(14) IF(cHosts.size<ur)

(15)  addNewHosts(cHosts, (ur-cHosts.size)/ℎ𝑜𝑠𝑡𝑆𝑖𝑧𝑒+1);

(16) ENDIF

(17) placeSolution = getSolution(id, ur, cHosts);

(18) update(𝐴, aiar);