/
project.go
98 lines (78 loc) · 2.87 KB
/
project.go
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package keeper
import (
"encoding/binary"
"github.com/cosmos/cosmos-sdk/store/prefix"
sdk "github.com/cosmos/cosmos-sdk/types"
spntypes "github.com/tendermint/spn/pkg/types"
"github.com/tendermint/spn/x/project/types"
)
// GetProjectCounter get the counter for project
func (k Keeper) GetProjectCounter(ctx sdk.Context) uint64 {
store := prefix.NewStore(ctx.KVStore(k.storeKey), []byte{})
byteKey := types.KeyPrefix(types.ProjectCounterKey)
bz := store.Get(byteKey)
// Count doesn't exist: no element
if bz == nil {
return 0
}
// Parse bytes
return binary.BigEndian.Uint64(bz)
}
// SetProjectCounter set the counter for project
func (k Keeper) SetProjectCounter(ctx sdk.Context, counter uint64) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), []byte{})
byteKey := types.KeyPrefix(types.ProjectCounterKey)
bz := make([]byte, 8)
binary.BigEndian.PutUint64(bz, counter)
store.Set(byteKey, bz)
}
// AppendProject appends a project in the store with a new id and update the count
func (k Keeper) AppendProject(ctx sdk.Context, project types.Project) uint64 {
// Create the project
counter := k.GetProjectCounter(ctx)
// Set the ID of the appended value
project.ProjectID = counter
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.ProjectKey))
appendedValue := k.cdc.MustMarshal(&project)
store.Set(GetProjectIDBytes(project.ProjectID), appendedValue)
// Update project count
k.SetProjectCounter(ctx, counter+1)
return counter
}
// SetProject set a specific project in the store
func (k Keeper) SetProject(ctx sdk.Context, project types.Project) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.ProjectKey))
b := k.cdc.MustMarshal(&project)
store.Set(GetProjectIDBytes(project.ProjectID), b)
}
// GetProject returns a project from its id
func (k Keeper) GetProject(ctx sdk.Context, id uint64) (val types.Project, found bool) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.ProjectKey))
b := store.Get(GetProjectIDBytes(id))
if b == nil {
return val, false
}
k.cdc.MustUnmarshal(b, &val)
return val, true
}
// RemoveProject removes a project from the store
func (k Keeper) RemoveProject(ctx sdk.Context, id uint64) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.ProjectKey))
store.Delete(GetProjectIDBytes(id))
}
// GetAllProject returns all project
func (k Keeper) GetAllProject(ctx sdk.Context) (list []types.Project) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.ProjectKey))
iterator := sdk.KVStorePrefixIterator(store, []byte{})
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var val types.Project
k.cdc.MustUnmarshal(iterator.Value(), &val)
list = append(list, val)
}
return
}
// GetProjectIDBytes returns the byte representation of the ID
func GetProjectIDBytes(id uint64) []byte {
return spntypes.UintBytes(id)
}