serverCalculate

The server receives the query data from the client and returns the corresponding value to the client.

int serverCalculate(
    DG_TeeCtx *dgTeeCtx,
    DG_Buckets *buckets
)

Parameters

Parameter	Description	Value Range	Input/Output
dgTeeCtx	MPC context	Context initialized in section DG_InitPsmOpts.	Input
buckets	Internal bucket structure	-	Input

Return Values

Success: 0 is returned.
Failure: The error code is returned.

Error Codes

Error Code	Value	Description	Remarks
DG_SUCCESS	0	Success	None.
DG_FAILURE	1	Communication failure	None.
DG_ERR_MPC_TEE_INVALID_NODE_INFO	4503	Invalid TEE node information	None.
DG_ERR_MPC_TEE_INVALID_PARAM	4501	Failed to verify the parameters.	dgCfg is null or the dgTeeCtx double pointer is null.

Dependency

dgCfg depends on the MPC configuration in section DataGuard APIs for Configuring an Operation Set, and the configured dgCfg is used as the input parameter of this API.
psmOpts depends on the successful initialization in section DG_InitPsmOpts of the function group for the PSM operator.
#include "data_guard_mpc.h": required header file

Example

#include  "data_guard_mpc.h"
// psmOpts is the result of the successful DG_InitPsmOpts call, and dgTee is the result of the successful initTeeMpcSql call.
// buckets is the output result of offlineCalculate.
int res = psmOpts.serverCalculate(dgTee, buckets);
if (rv != 0) {
    return rv;
}

Call the initTeeCtx API using the psmOpts output of the successful DG_InitPsmOpts call.

Parent topic: PSM Operator