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fix: system global lock

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* add middleware to entire API group
* setNX system lock key
This commit is contained in:
Mohamed Sohail 2023-03-16 08:01:58 +00:00
parent ee907dddbc
commit 5679a675f3
Signed by: kamikazechaser
GPG Key ID: 7DD45520C01CD85D
2 changed files with 17 additions and 16 deletions
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10
cmd/service/api.go
View File

@ -1,7 +1,6 @@
package main package main
import ( import (
"errors"
"net/http" "net/http"
"time" "time"
@ -11,7 +10,6 @@ import (
"github.com/grassrootseconomics/cic-custodial/internal/custodial" "github.com/grassrootseconomics/cic-custodial/internal/custodial"
"github.com/labstack/echo/v4" "github.com/labstack/echo/v4"
"github.com/labstack/echo/v4/middleware" "github.com/labstack/echo/v4/middleware"
"github.com/redis/go-redis/v9"
) )
const ( const (
@ -49,9 +47,7 @@ func initApiServer(custodialContainer *custodial.Custodial) *echo.Echo {
}) })
} }
apiRoute := server.Group("/api") apiRoute := server.Group("/api", systemGlobalLock)
apiRoute.Use(systemGlobalLock)
apiRoute.POST("/account/create", api.HandleAccountCreate) apiRoute.POST("/account/create", api.HandleAccountCreate)
apiRoute.POST("/sign/transfer", api.HandleSignTransfer) apiRoute.POST("/sign/transfer", api.HandleSignTransfer)
@ -95,12 +91,12 @@ func systemGlobalLock(next echo.HandlerFunc) echo.HandlerFunc {
) )
locked, err := cu.RedisClient.Get(c.Request().Context(), systemGlobalLockKey).Bool() locked, err := cu.RedisClient.Get(c.Request().Context(), systemGlobalLockKey).Bool()
if !errors.Is(err, redis.Nil) { if err != nil {
return err return err
} }
if locked { if locked {
return c.JSON(http.StatusOK, api.ErrResp{ return c.JSON(http.StatusServiceUnavailable, api.ErrResp{
Ok: false, Ok: false,
Message: "System manually locked.", Message: "System manually locked.",
}) })

17
pkg/redis/pool.go
View File

@ -7,14 +7,20 @@ import (
"github.com/redis/go-redis/v9" "github.com/redis/go-redis/v9"
) )
type RedisPoolOpts struct { const (
systemGlobalLockKey = "system:global_lock"
)
type (
RedisPoolOpts struct {
DSN string DSN string
MinIdleConns int MinIdleConns int
} }
type RedisPool struct { RedisPool struct {
Client *redis.Client Client *redis.Client
} }
)
// NewRedisPool creates a reusable connection across the cic-custodial componenent. // NewRedisPool creates a reusable connection across the cic-custodial componenent.
// Note: Each db namespace requires its own connection pool. // Note: Each db namespace requires its own connection pool.
@ -31,8 +37,7 @@ func NewRedisPool(ctx context.Context, o RedisPoolOpts) (*RedisPool, error) {
ctx, cancel := context.WithTimeout(ctx, 5*time.Second) ctx, cancel := context.WithTimeout(ctx, 5*time.Second)
defer cancel() defer cancel()
_, err = redisClient.Ping(ctx).Result() if err := redisClient.SetNX(ctx, systemGlobalLockKey, false, 0).Err(); err != nil {
if err != nil {
return nil, err return nil, err
} }