/
task.go
106 lines (86 loc) · 2.83 KB
/
task.go
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package keeper
import (
"encoding/binary"
"github.com/cosmos/cosmos-sdk/store/prefix"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/gitopia/gitopia/v2/x/gitopia/types"
)
// GetTaskCount get the total number of task
func (k Keeper) GetTaskCount(ctx sdk.Context) uint64 {
store := prefix.NewStore(ctx.KVStore(k.storeKey), []byte{})
byteKey := types.KeyPrefix(types.TaskCountKey)
bz := store.Get(byteKey)
// Count doesn't exist: no element
if bz == nil {
return 0
}
// Parse bytes
return binary.BigEndian.Uint64(bz)
}
// SetTaskCount set the total number of task
func (k Keeper) SetTaskCount(ctx sdk.Context, count uint64) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), []byte{})
byteKey := types.KeyPrefix(types.TaskCountKey)
bz := make([]byte, 8)
binary.BigEndian.PutUint64(bz, count)
store.Set(byteKey, bz)
}
// AppendTask appends a task in the store with a new id and update the count
func (k Keeper) AppendTask(
ctx sdk.Context,
task types.Task,
) uint64 {
// Create the task
count := k.GetTaskCount(ctx)
// Set the ID of the appended value
task.Id = count
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.TaskKey))
appendedValue := k.cdc.MustMarshal(&task)
store.Set(GetTaskIDBytes(task.Id), appendedValue)
// Update task count
k.SetTaskCount(ctx, count+1)
return count
}
// SetTask set a specific task in the store
func (k Keeper) SetTask(ctx sdk.Context, task types.Task) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.TaskKey))
b := k.cdc.MustMarshal(&task)
store.Set(GetTaskIDBytes(task.Id), b)
}
// GetTask returns a task from its id
func (k Keeper) GetTask(ctx sdk.Context, id uint64) (val types.Task, found bool) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.TaskKey))
b := store.Get(GetTaskIDBytes(id))
if b == nil {
return val, false
}
k.cdc.MustUnmarshal(b, &val)
return val, true
}
// RemoveTask removes a task from the store
func (k Keeper) RemoveTask(ctx sdk.Context, id uint64) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.TaskKey))
store.Delete(GetTaskIDBytes(id))
}
// GetAllTask returns all task
func (k Keeper) GetAllTask(ctx sdk.Context) (list []types.Task) {
store := prefix.NewStore(ctx.KVStore(k.storeKey), types.KeyPrefix(types.TaskKey))
iterator := sdk.KVStorePrefixIterator(store, []byte{})
defer iterator.Close()
for ; iterator.Valid(); iterator.Next() {
var val types.Task
k.cdc.MustUnmarshal(iterator.Value(), &val)
list = append(list, val)
}
return
}
// GetTaskIDBytes returns the byte representation of the ID
func GetTaskIDBytes(id uint64) []byte {
bz := make([]byte, 8)
binary.BigEndian.PutUint64(bz, id)
return bz
}
// GetTaskIDFromBytes returns ID in uint64 format from a byte array
func GetTaskIDFromBytes(bz []byte) uint64 {
return binary.BigEndian.Uint64(bz)
}