EstimateEnergy gRPC Method

Parameters

uit

tekenreeks

VERPLICHT

Bezig met laden...

contractAddress

tekenreeks

VERPLICHT

Bezig met laden...

method

tekenreeks

VERPLICHT

Bezig met laden...

jsonString

tekenreeks

VERPLICHT

Bezig met laden...

tAmount

geheel getal

VERPLICHT

Bezig met laden...

tTokenID

tekenreeks

VERPLICHT

Bezig met laden...

tTokenAmount

geheel getal

VERPLICHT

Bezig met laden...

Retourzendingen

resultaat

object

Bezig met laden...

resultaat

booleaanse waarde

Bezig met laden...

code

tekenreeks

Bezig met laden...

bericht

tekenreeks

Bezig met laden...

energy_required

geheel getal

Bezig met laden...

Verzoek

1
package main
2

3
import (
4
   "context"
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   "crypto/tls"
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   "encoding/json"
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   "fmt"
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   "github.com/fbsobreira/gotron-sdk/pkg/client"
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   "google.golang.org/grpc"
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   "google.golang.org/grpc/credentials"
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)
12

13
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
14
// For eg: QN Endpoint: https://docs-demo.tron-mainnet.quiknode.pro/abcde123456789
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// endpoint will be: docs-demo.tron-mainnet.quiknode.pro:50051  {50051 is the port number for Tron gRPC}
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// token will be : abcde123456789
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var token = "YOUR_TOKEN"
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var endpoint = "YOUR_ENDPOINT:50051"
20

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type auth struct {
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   token string
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}
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func (a *auth) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
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   return map[string]string{
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      "x-token": a.token,
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   }, nil
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}
30

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func (a *auth) RequireTransportSecurity() bool {
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   return false
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}
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func main() {
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   opts := []grpc.DialOption{
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      grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})),
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      grpc.WithPerRPCCredentials(&auth{token}),
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   }
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   conn := client.NewGrpcClient(endpoint)
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   if err := conn.Start(opts...); err != nil {
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      panic(err)
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   }
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   defer conn.Conn.Close()
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   from := "TTGhREx2pDSxFX555NWz1YwGpiBVPvQA7e"
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   contractAddress := "TVSvjZdyDSNocHm7dP3jvCmMNsCnMTPa5W"
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   method := "transfer(address,uint256)"
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   jsonString := `[{"address": "TE4c73WubeWPhSF1nAovQDmQytjcaLZyY9"},{"uint256": "100"}]`
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   tAmount := int64(0)
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   tTokenID := ""
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   tTokenAmount := int64(0)
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   fmt.Println("Estimating energy for contract call...")
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   energy, err := conn.EstimateEnergy(
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      from,            // Caller's address
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      contractAddress, // Contract address
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      method,          // Function selector
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      jsonString,      // Parameters in JSON format
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      tAmount,         // TRX value to send
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      tTokenID,        // Token ID (if applicable)
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      tTokenAmount,    // Token value (if applicable)
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   )
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   if err != nil {
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      fmt.Printf("Error estimating energy: %v\n", err)
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      return
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   }
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   fmt.Println("Energy estimation successful! Results:")
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   jsonData, _ := json.MarshalIndent(energy, "", "  ")
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   fmt.Println(string(jsonData))
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   if !energy.Result.Result {
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      fmt.Println("Energy estimation failed!")
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      if len(energy.Result.Message) > 0 {
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         fmt.Printf("Error message: %s\n", energy.Result.Message)
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      }
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      return
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   }
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   energyRequired := energy.EnergyRequired
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   energyBuffer := energyRequired / 5 // Add 20% buffer
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   recommendedFeeLimit := (energyRequired + energyBuffer) * 420
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   fmt.Printf("\nEstimated energy required: %d\n", energyRequired)
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   fmt.Printf("Recommended fee limit (with 20%% buffer): %d SUN\n", recommendedFeeLimit)
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   fmt.Println("\nYou can use this fee limit when making the actual transaction.")
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}

1
package main
2

3
import (
4
   "context"
5
   "crypto/tls"
6
   "encoding/json"
7
   "fmt"
8
   "github.com/fbsobreira/gotron-sdk/pkg/client"
9
   "google.golang.org/grpc"
10
   "google.golang.org/grpc/credentials"
11
)
12

13
// Quicknode endpoints consist of two crucial components: the endpoint name and the corresponding token
14
// For eg: QN Endpoint: https://docs-demo.tron-mainnet.quiknode.pro/abcde123456789
15
// endpoint will be: docs-demo.tron-mainnet.quiknode.pro:50051  {50051 is the port number for Tron gRPC}
16
// token will be : abcde123456789
17

18
var token = "YOUR_TOKEN"
19
var endpoint = "YOUR_ENDPOINT:50051"
20

21
type auth struct {
22
   token string
23
}
24

25
func (a *auth) GetRequestMetadata(ctx context.Context, uri ...string) (map[string]string, error) {
26
   return map[string]string{
27
      "x-token": a.token,
28
   }, nil
29
}
30

31
func (a *auth) RequireTransportSecurity() bool {
32
   return false
33
}
34

35
func main() {
36

37
   opts := []grpc.DialOption{
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      grpc.WithTransportCredentials(credentials.NewTLS(&tls.Config{})),
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      grpc.WithPerRPCCredentials(&auth{token}),
40
   }
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   conn := client.NewGrpcClient(endpoint)
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   if err := conn.Start(opts...); err != nil {
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      panic(err)
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   }
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   defer conn.Conn.Close()
46

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   from := "TTGhREx2pDSxFX555NWz1YwGpiBVPvQA7e"
48
   contractAddress := "TVSvjZdyDSNocHm7dP3jvCmMNsCnMTPa5W"
49
   method := "transfer(address,uint256)"
50
   jsonString := `[{"address": "TE4c73WubeWPhSF1nAovQDmQytjcaLZyY9"},{"uint256": "100"}]`
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   tAmount := int64(0)
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   tTokenID := ""
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   tTokenAmount := int64(0)
54

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   fmt.Println("Estimating energy for contract call...")
56
   
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   energy, err := conn.EstimateEnergy(
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      from,            // Caller's address
59
      contractAddress, // Contract address
60
      method,          // Function selector
61
      jsonString,      // Parameters in JSON format
62
      tAmount,         // TRX value to send
63
      tTokenID,        // Token ID (if applicable)
64
      tTokenAmount,    // Token value (if applicable)
65
   )
66
   
67
   if err != nil {
68
      fmt.Printf("Error estimating energy: %v\n", err)
69
      return
70
   }
71
   
72
   fmt.Println("Energy estimation successful! Results:")
73
   jsonData, _ := json.MarshalIndent(energy, "", "  ")
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   fmt.Println(string(jsonData))
75
   
76
   if !energy.Result.Result {
77
      fmt.Println("Energy estimation failed!")
78
      if len(energy.Result.Message) > 0 {
79
         fmt.Printf("Error message: %s\n", energy.Result.Message)
80
      }
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      return
82
   }
83
   
84
   energyRequired := energy.EnergyRequired
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   energyBuffer := energyRequired / 5 // Add 20% buffer
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   recommendedFeeLimit := (energyRequired + energyBuffer) * 420
87
   
88
   fmt.Printf("\nEstimated energy required: %d\n", energyRequired)
89
   fmt.Printf("Recommended fee limit (with 20%% buffer): %d SUN\n", recommendedFeeLimit)
90
   fmt.Println("\nYou can use this fee limit when making the actual transaction.")
91
}

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