feat: implement RetrievePow, DeletePow, CacheResult, VerifyCaptchaResult, DeleteCaptchaResult, CaptchaExists& GetVisitorCount RPCs

dcache_py/dcache_pb2.pyi

@@ -119,29 +119,55 @@ class Learner(_message.Message):
     addr: str
     def __init__(self, id: _Optional[int] = ..., addr: _Optional[str] = ...) -> None: ...
 
+class CaptchaExistsResponse(_message.Message):
+    __slots__ = ("exists",)
+    EXISTS_FIELD_NUMBER: _ClassVar[int]
+    exists: bool
+    def __init__(self, exists: bool = ...) -> None: ...
+
+class GetVisitorCountResponse(_message.Message):
+    __slots__ = ("visitors",)
+    VISITORS_FIELD_NUMBER: _ClassVar[int]
+    visitors: int
+    def __init__(self, visitors: _Optional[int] = ...) -> None: ...
+
+class OptionGetVisitorCountResponse(_message.Message):
+    __slots__ = ("result",)
+    RESULT_FIELD_NUMBER: _ClassVar[int]
+    result: GetVisitorCountResponse
+    def __init__(self, result: _Optional[_Union[GetVisitorCountResponse, _Mapping]] = ...) -> None: ...
+
 class DcacheRequest(_message.Message):
-    __slots__ = ("addCaptcha", "addVisitor", "renameCaptcha", "removeCaptcha", "cachePow", "cacheResult")
+    __slots__ = ("addCaptcha", "addVisitor", "renameCaptcha", "removeCaptcha", "cachePow", "cacheResult", "captchaExists", "getVisitorCount")
     ADDCAPTCHA_FIELD_NUMBER: _ClassVar[int]
     ADDVISITOR_FIELD_NUMBER: _ClassVar[int]
     RENAMECAPTCHA_FIELD_NUMBER: _ClassVar[int]
     REMOVECAPTCHA_FIELD_NUMBER: _ClassVar[int]
     CACHEPOW_FIELD_NUMBER: _ClassVar[int]
     CACHERESULT_FIELD_NUMBER: _ClassVar[int]
+    CAPTCHAEXISTS_FIELD_NUMBER: _ClassVar[int]
+    GETVISITORCOUNT_FIELD_NUMBER: _ClassVar[int]
     addCaptcha: AddCaptchaRequest
     addVisitor: CaptchaID
     renameCaptcha: RenameCaptchaRequest
     removeCaptcha: CaptchaID
     cachePow: CachePowRequest
     cacheResult: CacheResultRequest
-    def __init__(self, addCaptcha: _Optional[_Union[AddCaptchaRequest, _Mapping]] = ..., addVisitor: _Optional[_Union[CaptchaID, _Mapping]] = ..., renameCaptcha: _Optional[_Union[RenameCaptchaRequest, _Mapping]] = ..., removeCaptcha: _Optional[_Union[CaptchaID, _Mapping]] = ..., cachePow: _Optional[_Union[CachePowRequest, _Mapping]] = ..., cacheResult: _Optional[_Union[CacheResultRequest, _Mapping]] = ...) -> None: ...
+    captchaExists: CaptchaID
+    getVisitorCount: CaptchaID
+    def __init__(self, addCaptcha: _Optional[_Union[AddCaptchaRequest, _Mapping]] = ..., addVisitor: _Optional[_Union[CaptchaID, _Mapping]] = ..., renameCaptcha: _Optional[_Union[RenameCaptchaRequest, _Mapping]] = ..., removeCaptcha: _Optional[_Union[CaptchaID, _Mapping]] = ..., cachePow: _Optional[_Union[CachePowRequest, _Mapping]] = ..., cacheResult: _Optional[_Union[CacheResultRequest, _Mapping]] = ..., captchaExists: _Optional[_Union[CaptchaID, _Mapping]] = ..., getVisitorCount: _Optional[_Union[CaptchaID, _Mapping]] = ...) -> None: ...
 
 class DcacheResponse(_message.Message):
-    __slots__ = ("option_add_visitor_result", "other")
+    __slots__ = ("option_add_visitor_result", "other", "captcha_exists", "get_visitor_count")
     OPTION_ADD_VISITOR_RESULT_FIELD_NUMBER: _ClassVar[int]
     OTHER_FIELD_NUMBER: _ClassVar[int]
+    CAPTCHA_EXISTS_FIELD_NUMBER: _ClassVar[int]
+    GET_VISITOR_COUNT_FIELD_NUMBER: _ClassVar[int]
     option_add_visitor_result: OptionAddVisitorResult
     other: RaftReply
-    def __init__(self, option_add_visitor_result: _Optional[_Union[OptionAddVisitorResult, _Mapping]] = ..., other: _Optional[_Union[RaftReply, _Mapping]] = ...) -> None: ...
+    captcha_exists: CaptchaExistsResponse
+    get_visitor_count: OptionGetVisitorCountResponse
+    def __init__(self, option_add_visitor_result: _Optional[_Union[OptionAddVisitorResult, _Mapping]] = ..., other: _Optional[_Union[RaftReply, _Mapping]] = ..., captcha_exists: _Optional[_Union[CaptchaExistsResponse, _Mapping]] = ..., get_visitor_count: _Optional[_Union[OptionGetVisitorCountResponse, _Mapping]] = ...) -> None: ...
 
 class DcacheBatchRequest(_message.Message):
     __slots__ = ("requests",)
@@ -154,3 +180,39 @@ class DcacheBatchResponse(_message.Message):
     RESPONSES_FIELD_NUMBER: _ClassVar[int]
     responses: _containers.RepeatedCompositeFieldContainer[DcacheResponse]
     def __init__(self, responses: _Optional[_Iterable[_Union[DcacheResponse, _Mapping]]] = ...) -> None: ...
+
+class RetrievePowRequest(_message.Message):
+    __slots__ = ("token", "key")
+    TOKEN_FIELD_NUMBER: _ClassVar[int]
+    KEY_FIELD_NUMBER: _ClassVar[int]
+    token: str
+    key: str
+    def __init__(self, token: _Optional[str] = ..., key: _Optional[str] = ...) -> None: ...
+
+class RetrievePowResponse(_message.Message):
+    __slots__ = ("difficulty_factor", "duration", "key")
+    DIFFICULTY_FACTOR_FIELD_NUMBER: _ClassVar[int]
+    DURATION_FIELD_NUMBER: _ClassVar[int]
+    KEY_FIELD_NUMBER: _ClassVar[int]
+    difficulty_factor: int
+    duration: int
+    key: str
+    def __init__(self, difficulty_factor: _Optional[int] = ..., duration: _Optional[int] = ..., key: _Optional[str] = ...) -> None: ...
+
+class CaptchaResultVerified(_message.Message):
+    __slots__ = ("verified",)
+    VERIFIED_FIELD_NUMBER: _ClassVar[int]
+    verified: bool
+    def __init__(self, verified: bool = ...) -> None: ...
+
+class DeletePowRequest(_message.Message):
+    __slots__ = ("string",)
+    STRING_FIELD_NUMBER: _ClassVar[int]
+    string: str
+    def __init__(self, string: _Optional[str] = ...) -> None: ...
+
+class OptionalRetrievePoWResponse(_message.Message):
+    __slots__ = ("result",)
+    RESULT_FIELD_NUMBER: _ClassVar[int]
+    result: RetrievePowResponse
+    def __init__(self, result: _Optional[_Union[RetrievePowResponse, _Mapping]] = ...) -> None: ...

dcache_py/dcache_pb2_grpc.py

@@ -39,11 +39,41 @@ class DcacheServiceStub(object):
                 request_serializer=dcache__pb2.CachePowRequest.SerializeToString,
                 response_deserializer=dcache__pb2.RaftReply.FromString,
                 )
+        self.RetrievePow = channel.unary_unary(
+                '/dcache.DcacheService/RetrievePow',
+                request_serializer=dcache__pb2.RetrievePowRequest.SerializeToString,
+                response_deserializer=dcache__pb2.OptionalRetrievePoWResponse.FromString,
+                )
+        self.DeletePow = channel.unary_unary(
+                '/dcache.DcacheService/DeletePow',
+                request_serializer=dcache__pb2.DeletePowRequest.SerializeToString,
+                response_deserializer=dcache__pb2.RaftReply.FromString,
+                )
         self.CacheResult = channel.unary_unary(
                 '/dcache.DcacheService/CacheResult',
                 request_serializer=dcache__pb2.CacheResultRequest.SerializeToString,
                 response_deserializer=dcache__pb2.RaftReply.FromString,
                 )
+        self.VerifyCaptchaResult = channel.unary_unary(
+                '/dcache.DcacheService/VerifyCaptchaResult',
+                request_serializer=dcache__pb2.RetrievePowRequest.SerializeToString,
+                response_deserializer=dcache__pb2.CaptchaResultVerified.FromString,
+                )
+        self.DeleteCaptchaResult = channel.unary_unary(
+                '/dcache.DcacheService/DeleteCaptchaResult',
+                request_serializer=dcache__pb2.DeleteCaptchaResultRequest.SerializeToString,
+                response_deserializer=dcache__pb2.RaftReply.FromString,
+                )
+        self.CaptchaExists = channel.unary_unary(
+                '/dcache.DcacheService/CaptchaExists',
+                request_serializer=dcache__pb2.CaptchaID.SerializeToString,
+                response_deserializer=dcache__pb2.CaptchaExistsResponse.FromString,
+                )
+        self.GetVisitorCount = channel.unary_unary(
+                '/dcache.DcacheService/GetVisitorCount',
+                request_serializer=dcache__pb2.CaptchaID.SerializeToString,
+                response_deserializer=dcache__pb2.OptionGetVisitorCountResponse.FromString,
+                )
         self.PipelineDcacheOps = channel.unary_unary(
                 '/dcache.DcacheService/PipelineDcacheOps',
                 request_serializer=dcache__pb2.DcacheBatchRequest.SerializeToString,
@@ -114,12 +144,48 @@ class DcacheServiceServicer(object):
         context.set_details('Method not implemented!')
         raise NotImplementedError('Method not implemented!')
 
+    def RetrievePow(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def DeletePow(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
     def CacheResult(self, request, context):
         """Missing associated documentation comment in .proto file."""
         context.set_code(grpc.StatusCode.UNIMPLEMENTED)
         context.set_details('Method not implemented!')
         raise NotImplementedError('Method not implemented!')
 
+    def VerifyCaptchaResult(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def DeleteCaptchaResult(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def CaptchaExists(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
+    def GetVisitorCount(self, request, context):
+        """Missing associated documentation comment in .proto file."""
+        context.set_code(grpc.StatusCode.UNIMPLEMENTED)
+        context.set_details('Method not implemented!')
+        raise NotImplementedError('Method not implemented!')
+
     def PipelineDcacheOps(self, request, context):
         """Missing associated documentation comment in .proto file."""
         context.set_code(grpc.StatusCode.UNIMPLEMENTED)
@@ -193,11 +259,41 @@ def add_DcacheServiceServicer_to_server(servicer, server):
                     request_deserializer=dcache__pb2.CachePowRequest.FromString,
                     response_serializer=dcache__pb2.RaftReply.SerializeToString,
             ),
+            'RetrievePow': grpc.unary_unary_rpc_method_handler(
+                    servicer.RetrievePow,
+                    request_deserializer=dcache__pb2.RetrievePowRequest.FromString,
+                    response_serializer=dcache__pb2.OptionalRetrievePoWResponse.SerializeToString,
+            ),
+            'DeletePow': grpc.unary_unary_rpc_method_handler(
+                    servicer.DeletePow,
+                    request_deserializer=dcache__pb2.DeletePowRequest.FromString,
+                    response_serializer=dcache__pb2.RaftReply.SerializeToString,
+            ),
             'CacheResult': grpc.unary_unary_rpc_method_handler(
                     servicer.CacheResult,
                     request_deserializer=dcache__pb2.CacheResultRequest.FromString,
                     response_serializer=dcache__pb2.RaftReply.SerializeToString,
             ),
+            'VerifyCaptchaResult': grpc.unary_unary_rpc_method_handler(
+                    servicer.VerifyCaptchaResult,
+                    request_deserializer=dcache__pb2.RetrievePowRequest.FromString,
+                    response_serializer=dcache__pb2.CaptchaResultVerified.SerializeToString,
+            ),
+            'DeleteCaptchaResult': grpc.unary_unary_rpc_method_handler(
+                    servicer.DeleteCaptchaResult,
+                    request_deserializer=dcache__pb2.DeleteCaptchaResultRequest.FromString,
+                    response_serializer=dcache__pb2.RaftReply.SerializeToString,
+            ),
+            'CaptchaExists': grpc.unary_unary_rpc_method_handler(
+                    servicer.CaptchaExists,
+                    request_deserializer=dcache__pb2.CaptchaID.FromString,
+                    response_serializer=dcache__pb2.CaptchaExistsResponse.SerializeToString,
+            ),
+            'GetVisitorCount': grpc.unary_unary_rpc_method_handler(
+                    servicer.GetVisitorCount,
+                    request_deserializer=dcache__pb2.CaptchaID.FromString,
+                    response_serializer=dcache__pb2.OptionGetVisitorCountResponse.SerializeToString,
+            ),
             'PipelineDcacheOps': grpc.unary_unary_rpc_method_handler(
                     servicer.PipelineDcacheOps,
                     request_deserializer=dcache__pb2.DcacheBatchRequest.FromString,
@@ -328,6 +424,40 @@ class DcacheService(object):
             options, channel_credentials,
             insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
 
+    @staticmethod
+    def RetrievePow(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/dcache.DcacheService/RetrievePow',
+            dcache__pb2.RetrievePowRequest.SerializeToString,
+            dcache__pb2.OptionalRetrievePoWResponse.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def DeletePow(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/dcache.DcacheService/DeletePow',
+            dcache__pb2.DeletePowRequest.SerializeToString,
+            dcache__pb2.RaftReply.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
     @staticmethod
     def CacheResult(request,
             target,
@@ -345,6 +475,74 @@ class DcacheService(object):
             options, channel_credentials,
             insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
 
+    @staticmethod
+    def VerifyCaptchaResult(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/dcache.DcacheService/VerifyCaptchaResult',
+            dcache__pb2.RetrievePowRequest.SerializeToString,
+            dcache__pb2.CaptchaResultVerified.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def DeleteCaptchaResult(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/dcache.DcacheService/DeleteCaptchaResult',
+            dcache__pb2.DeleteCaptchaResultRequest.SerializeToString,
+            dcache__pb2.RaftReply.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def CaptchaExists(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/dcache.DcacheService/CaptchaExists',
+            dcache__pb2.CaptchaID.SerializeToString,
+            dcache__pb2.CaptchaExistsResponse.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
+    @staticmethod
+    def GetVisitorCount(request,
+            target,
+            options=(),
+            channel_credentials=None,
+            call_credentials=None,
+            insecure=False,
+            compression=None,
+            wait_for_ready=None,
+            timeout=None,
+            metadata=None):
+        return grpc.experimental.unary_unary(request, target, '/dcache.DcacheService/GetVisitorCount',
+            dcache__pb2.CaptchaID.SerializeToString,
+            dcache__pb2.OptionGetVisitorCountResponse.FromString,
+            options, channel_credentials,
+            insecure, call_credentials, compression, wait_for_ready, timeout, metadata)
+
     @staticmethod
     def PipelineDcacheOps(request,
             target,

proto/dcache/dcache.proto

@@ -77,6 +77,20 @@ message Learner {
 }
 
 
+message CaptchaExistsResponse {
+    bool exists = 1;
+}
+
+
+message GetVisitorCountResponse {
+    uint32 visitors = 1;
+}
+
+
+message OptionGetVisitorCountResponse {
+	optional GetVisitorCountResponse result = 1;
+}
+
 message DcacheRequest {
     oneof DcacheRequest {
 	AddCaptchaRequest addCaptcha = 1;
@@ -85,6 +99,8 @@ message DcacheRequest {
 	CaptchaID removeCaptcha = 4;
 	CachePowRequest cachePow = 5;
 	CacheResultRequest cacheResult = 6;
+	CaptchaID captchaExists = 7;
+	CaptchaID getVisitorCount = 8;
     }
 }
 
@@ -93,6 +109,8 @@ message DcacheResponse {
     oneof DcacheResponse {
 		OptionAddVisitorResult option_add_visitor_result = 1;
         RaftReply other = 2;
+        CaptchaExistsResponse captcha_exists = 3;
+        OptionGetVisitorCountResponse get_visitor_count = 4;
 	}
 }
 
@@ -104,13 +122,43 @@ message DcacheBatchResponse {
     repeated DcacheResponse responses = 1;
 }
 
+message RetrievePowRequest {
+    string token = 1;
+    string key = 2;
+}
+
+message RetrievePowResponse {
+    uint32 difficulty_factor = 1;
+    uint64 duration = 2;
+    string key = 3;
+}
+
+
+message CaptchaResultVerified  {
+    bool verified  = 1;
+}
+
+message DeletePowRequest {
+    string string = 1;
+}
+
+message OptionalRetrievePoWResponse {
+    optional RetrievePowResponse result = 1;
+}
+
 service DcacheService {
 	rpc AddCaptcha(AddCaptchaRequest) returns (RaftReply) {}
 	rpc AddVisitor(CaptchaID) returns (OptionAddVisitorResult) {}
 	rpc RenameCaptcha(RenameCaptchaRequest) returns (RaftReply) {}
 	rpc RemoveCaptcha(CaptchaID) returns (RaftReply) {}
 	rpc CachePow(CachePowRequest) returns (RaftReply) {}
+	rpc RetrievePow(RetrievePowRequest) returns (OptionalRetrievePoWResponse) {}
+	rpc DeletePow(DeletePowRequest) returns (RaftReply) {}
 	rpc CacheResult(CacheResultRequest) returns (RaftReply) {}
+	rpc VerifyCaptchaResult(RetrievePowRequest) returns (CaptchaResultVerified) {}
+	rpc DeleteCaptchaResult(DeleteCaptchaResultRequest) returns (RaftReply) {}
+	rpc CaptchaExists(CaptchaID) returns (CaptchaExistsResponse) {}
+	rpc GetVisitorCount(CaptchaID) returns (OptionGetVisitorCountResponse) {}
 
 	rpc PipelineDcacheOps(DcacheBatchRequest) returns (DcacheBatchResponse) {}
 

src/lib.rs

@@ -119,29 +119,6 @@ pub async fn start_example_raft_node(
     raft.enable_heartbeat(true);
     raft.enable_elect(true);
 
-    let captcha = serde_json::json!({
-    "AddCaptcha": {
-        "id": "test_1",
-        "mcaptcha": {
-            "visitor_threshold": 0,
-            "defense": {
-                "levels": [
-                    {"visitor_threshold": 50, "difficulty_factor": 500},
-                    {"visitor_threshold": 5000, "difficulty_factor": 50000},
-                ],
-                "current_visitor_threshold": 0,
-            },
-            "duration": 30,
-        }}});
-    #[derive(serde::Serialize)]
-    struct X {
-        data: String,
-    }
-    let x = X {
-        data: serde_json::to_string(&captcha).unwrap(),
-    };
-    println!("{}", serde_json::to_string(&x).unwrap());
-
     //    raft.enable_tick(true);
 
     // Create an application that will store all the instances created above, this will

src/mcaptcha/cache.rs

@@ -42,8 +42,12 @@ impl HashCache {
             duration: config.duration,
         };
 
-        self.difficulty_map.insert(challenge, config);
-        Ok(())
+        if self.difficulty_map.get(&challenge).is_none() {
+            self.difficulty_map.insert(challenge, config);
+            Ok(())
+        } else {
+            Err(CaptchaError::InvalidPoW)
+        }
     }
 
     pub async fn clean_all_after_cold_start(&self, updated: HashCache) {
@@ -83,15 +87,12 @@ impl HashCache {
         tokio::spawn(fut);
     }
 
-    // retrive [PoWConfig] from cache. Deletes config post retrival
-    pub fn retrive_pow_config(
-        &self,
-        msg: VerifyCaptchaResult,
-    ) -> CaptchaResult<Option<CachedPoWConfig>> {
+    // retrieve [PoWConfig] from cache. Deletes config post retrival
+    pub fn retrieve_pow_config(&self, msg: VerifyCaptchaResult) -> Option<CachedPoWConfig> {
         if let Some(difficulty_factor) = self.remove_pow_config(&msg.token) {
-            Ok(Some(difficulty_factor))
+            Some(difficulty_factor)
         } else {
-            Ok(None)
+            None
         }
     }
 
@@ -106,15 +107,15 @@ impl HashCache {
     }
 
     // verify captcha result
-    pub fn verify_captcha_result(&self, challenge: VerifyCaptchaResult) -> CaptchaResult<bool> {
+    pub fn verify_captcha_result(&self, challenge: VerifyCaptchaResult) -> bool {
         if let Some(captcha_id) = self.remove_cache_result(&challenge.token) {
             if captcha_id == challenge.key {
-                Ok(true)
+                true
             } else {
-                Ok(false)
+                false
             }
         } else {
-            Ok(false)
+            false
         }
     }
 
@@ -209,16 +210,13 @@ mod tests {
             token: string.clone(),
             key: KEY.into(),
         };
-        let cache_difficulty_factor = cache.retrive_pow_config(msg.clone()).unwrap();
-        let new_cache_difficulty_factor = new_cache.retrive_pow_config(msg.clone()).unwrap();
+        let cache_difficulty_factor = cache.retrieve_pow_config(msg.clone()).unwrap();
+        let new_cache_difficulty_factor = new_cache.retrieve_pow_config(msg.clone()).unwrap();
 
+        assert_eq!(DIFFICULTY_FACTOR, cache_difficulty_factor.difficulty_factor);
         assert_eq!(
             DIFFICULTY_FACTOR,
-            cache_difficulty_factor.unwrap().difficulty_factor
-        );
-        assert_eq!(
-            DIFFICULTY_FACTOR,
-            new_cache_difficulty_factor.unwrap().difficulty_factor
+            new_cache_difficulty_factor.difficulty_factor
         );
 
         let verify_msg = VerifyCaptchaResult {
@@ -226,23 +224,23 @@ mod tests {
             token: RES.into(),
         };
 
-        assert!(new_cache.verify_captcha_result(verify_msg.clone()).unwrap());
-        assert!(!new_cache.verify_captcha_result(verify_msg.clone()).unwrap());
+        assert!(new_cache.verify_captcha_result(verify_msg.clone()));
+        assert!(!new_cache.verify_captcha_result(verify_msg.clone()));
 
         let duration: Duration = Duration::new(5, 0);
         //sleep(DURATION + DURATION).await;
         tokio::time::sleep(duration + duration).await;
 
-        let expired_string = cache.retrive_pow_config(msg.clone()).unwrap();
+        let expired_string = cache.retrieve_pow_config(msg.clone());
         assert_eq!(None, expired_string);
-        let expired_string = new_cache.retrive_pow_config(msg).unwrap();
+        let expired_string = new_cache.retrieve_pow_config(msg);
         assert_eq!(None, expired_string);
 
         cache.cache_result(add_cache);
         new_cache.clean_all_after_cold_start(cache.clone()).await;
         tokio::time::sleep(duration + duration).await;
-        assert!(!new_cache.verify_captcha_result(verify_msg.clone()).unwrap());
-        assert!(!cache.verify_captcha_result(verify_msg).unwrap());
+        assert!(!new_cache.verify_captcha_result(verify_msg.clone()));
+        assert!(!cache.verify_captcha_result(verify_msg));
     }
 
     #[actix_rt::test]
@@ -272,18 +270,15 @@ mod tests {
             token: string.clone(),
             key: KEY.into(),
         };
-        let cache_difficulty_factor = cache.retrive_pow_config(msg.clone()).unwrap();
+        let cache_difficulty_factor = cache.retrieve_pow_config(msg.clone()).unwrap();
 
-        assert_eq!(
-            DIFFICULTY_FACTOR,
-            cache_difficulty_factor.unwrap().difficulty_factor
-        );
+        assert_eq!(DIFFICULTY_FACTOR, cache_difficulty_factor.difficulty_factor);
 
         let duration: Duration = Duration::new(5, 0);
         //sleep(DURATION + DURATION).await;
         tokio::time::sleep(duration + duration).await;
 
-        let expired_string = cache.retrive_pow_config(msg).unwrap();
+        let expired_string = cache.retrieve_pow_config(msg);
         assert_eq!(None, expired_string);
     }
 
@@ -312,16 +307,16 @@ mod tests {
             token: RES.into(),
         };
 
-        assert!(cache.verify_captcha_result(verify_msg.clone()).unwrap());
+        assert!(cache.verify_captcha_result(verify_msg.clone()));
 
         // duplicate
-        assert!(!cache.verify_captcha_result(verify_msg).unwrap());
+        assert!(!cache.verify_captcha_result(verify_msg));
 
         let verify_msg = VerifyCaptchaResult {
             key: "cz".into(),
             token: RES.into(),
         };
-        assert!(!cache.verify_captcha_result(verify_msg).unwrap());
+        assert!(!cache.verify_captcha_result(verify_msg));
 
         let duration: Duration = Duration::new(5, 0);
         tokio::time::sleep(duration + duration).await;
@@ -330,6 +325,6 @@ mod tests {
             key: KEY.into(),
             token: RES.into(),
         };
-        assert!(!cache.verify_captcha_result(verify_msg).unwrap());
+        assert!(!cache.verify_captcha_result(verify_msg));
     }
 }

src/mcaptcha/mcaptcha.rs

@@ -126,7 +126,7 @@ impl MCaptcha {
 
     /// get [Counter]'s current visitor_threshold
     pub fn get_visitors(&self) -> u32 {
-        self.visitor_threshold.load(Ordering::Relaxed)
+        self.visitor_threshold.load(Ordering::SeqCst)
     }
 }
 
@@ -152,11 +152,9 @@ impl Manager {
     }
 
     fn gc(captchas: Arc<DashMap<String, Arc<MCaptcha>>>) {
-        println!("running gc");
         for captcha in captchas.iter() {
             let visitor = { captcha.value().get_visitors() };
             if visitor == 0 {
-                println!("Removing captcha");
                 captchas.remove(captcha.key());
             }
         }
@@ -255,7 +253,6 @@ impl Manager {
             let msg = ManagerMessages::AddVisitor(id);
             for _ in 0..visitors {
                 self.add_visitor(&msg);
-                println!("Adding visitor");
             }
         }
     }
@@ -377,7 +374,6 @@ mod tests {
         mcaptcha_data.get_mut(id).unwrap().add_visitor();
         mcaptcha_data.get_mut(id).unwrap().add_visitor();
         mcaptcha_data.get_mut(id).unwrap().add_visitor();
-        println!("{:?}", mcaptcha_data);
         //        let mcaptcha_data: HashMap<String, libmcaptcha::mcaptcha::MCaptcha> = {
         //        let serialized  = serde_json::to_string(&mcaptcha_data).unwrap();
         //        serde_json::from_str(&serialized).unwrap()
@@ -386,7 +382,6 @@ mod tests {
         manager.set_internal_data(mcaptcha_data);
 
         let mcaptcha_data = manager.get_internal_data();
-        println!("{:?}", mcaptcha_data);
         assert_eq!(
             manager.get_captcha(id).unwrap().get_visitors(),
             mcaptcha_data.get(id).unwrap().get_visitors()

src/network/raft_network_impl.rs

@@ -55,7 +55,6 @@ impl ItemManager for ChannelManager {
     type Error = tonic::transport::Error;
 
     async fn build(&self, addr: &Self::Key) -> Result<Channel, tonic::transport::Error> {
-        println!("New connection for {addr}");
         tonic::transport::Endpoint::new(addr.clone())?
             .connect()
             .await

src/protobuf.rs

@@ -129,6 +129,36 @@ impl DcacheService for MyDcacheImpl {
         Ok(Response::new(res.into()))
     }
 
+    async fn retrieve_pow(
+        &self,
+        request: tonic::Request<dcache::RetrievePowRequest>,
+    ) -> std::result::Result<tonic::Response<dcache::OptionalRetrievePoWResponse>, tonic::Status>
+    {
+        let req = request.into_inner();
+        let sm = self.app.store.state_machine.read().await;
+
+        let res = sm.results.retrieve_pow_config(req.into());
+
+        Ok(Response::new(dcache::OptionalRetrievePoWResponse {
+            result: res.map(|x| x.into()),
+        }))
+    }
+
+    async fn delete_pow(
+        &self,
+        request: tonic::Request<dcache::DeletePowRequest>,
+    ) -> std::result::Result<tonic::Response<dcache::RaftReply>, tonic::Status> {
+        let req = request.into_inner();
+        let res = self
+            .app
+            .raft
+            .client_write(DcacheRequest::DeletePoW(CacheMessages::DeletePoW(
+                req.string,
+            )))
+            .await;
+        Ok(Response::new(res.into()))
+    }
+
     async fn cache_result(
         &self,
         request: tonic::Request<dcache::CacheResultRequest>,
@@ -142,6 +172,62 @@ impl DcacheService for MyDcacheImpl {
         Ok(Response::new(res.into()))
     }
 
+    async fn verify_captcha_result(
+        &self,
+        request: tonic::Request<dcache::RetrievePowRequest>,
+    ) -> std::result::Result<tonic::Response<dcache::CaptchaResultVerified>, tonic::Status> {
+        let req = request.into_inner();
+        let sm = self.app.store.state_machine.read().await;
+
+        let verified = sm.results.verify_captcha_result(req.into());
+
+        Ok(Response::new(dcache::CaptchaResultVerified { verified }))
+    }
+
+    async fn delete_captcha_result(
+        &self,
+        request: tonic::Request<dcache::DeleteCaptchaResultRequest>,
+    ) -> std::result::Result<tonic::Response<dcache::RaftReply>, tonic::Status> {
+        let req = request.into_inner();
+        let res = self
+            .app
+            .raft
+            .client_write(DcacheRequest::DeleteCaptchaResult(
+                CacheMessages::DeleteCaptchaResult { token: req.token },
+            ))
+            .await;
+        Ok(Response::new(res.into()))
+    }
+
+    async fn captcha_exists(
+        &self,
+        request: tonic::Request<dcache::CaptchaId>,
+    ) -> std::result::Result<tonic::Response<dcache::CaptchaExistsResponse>, tonic::Status> {
+        let req = request.into_inner();
+        let sm = self.app.store.state_machine.read().await;
+        let exists = sm.counter.get_captcha(&req.id).is_some();
+        Ok(Response::new(dcache::CaptchaExistsResponse { exists }))
+    }
+
+    async fn get_visitor_count(
+        &self,
+        request: tonic::Request<dcache::CaptchaId>,
+    ) -> std::result::Result<tonic::Response<dcache::OptionGetVisitorCountResponse>, tonic::Status>
+    {
+        let req = request.into_inner();
+        let sm = self.app.store.state_machine.read().await;
+        if let Some(captcha) = sm.counter.get_captcha(&req.id) {
+            let res = captcha.get_visitors();
+            Ok(Response::new(dcache::OptionGetVisitorCountResponse {
+                result: Some(dcache::GetVisitorCountResponse { visitors: res }),
+            }))
+        } else {
+            Ok(Response::new(dcache::OptionGetVisitorCountResponse {
+                result: None,
+            }))
+        }
+    }
+
     //    type PipelineDcacheOpsStream =
     //        Pin<Box<dyn Stream<Item = Result<OuterPipelineRes, tonic::Status>> + Send + 'static>>;
 
@@ -238,6 +324,35 @@ impl DcacheService for MyDcacheImpl {
                         dcache_response: Some(InnerPipelineRes::Other(res.into())),
                     }
                 }
+                PipelineReq::CaptchaExists(captcha_exists_req) => {
+                    let sm = self.app.store.state_machine.read().await;
+                    let exists = sm.counter.get_captcha(&captcha_exists_req.id).is_some();
+                    let res = dcache::CaptchaExistsResponse { exists };
+                    drop(sm);
+                    OuterPipelineRes {
+                        dcache_response: Some(InnerPipelineRes::CaptchaExists(res)),
+                    }
+                }
+
+                PipelineReq::GetVisitorCount(get_visitor_count_req) => {
+                    let sm = self.app.store.state_machine.read().await;
+                    if let Some(captcha) = sm.counter.get_captcha(&get_visitor_count_req.id) {
+                        let res = captcha.get_visitors();
+                        OuterPipelineRes {
+                            dcache_response: Some(InnerPipelineRes::GetVisitorCount(
+                                dcache::OptionGetVisitorCountResponse {
+                                    result: Some(dcache::GetVisitorCountResponse { visitors: res }),
+                                },
+                            )),
+                        }
+                    } else {
+                        OuterPipelineRes {
+                            dcache_response: Some(InnerPipelineRes::GetVisitorCount(
+                                dcache::OptionGetVisitorCountResponse { result: None },
+                            )),
+                        }
+                    }
+                }
             };
             responses.push(res);
         }
@@ -390,6 +505,27 @@ impl From<dcache::CachePowRequest> for CacheMessages::CachePoW {
     }
 }
 
+impl From<CacheMessages::CachePoW> for dcache::CachePowRequest {
+    fn from(value: CacheMessages::CachePoW) -> Self {
+        Self {
+            string: value.string,
+            difficulty_factor: value.difficulty_factor,
+            duration: value.duration,
+            key: value.key,
+        }
+    }
+}
+
+impl From<CacheMessages::CachedPoWConfig> for dcache::RetrievePowResponse {
+    fn from(value: CacheMessages::CachedPoWConfig) -> Self {
+        Self {
+            difficulty_factor: value.difficulty_factor,
+            duration: value.duration,
+            key: value.key,
+        }
+    }
+}
+
 impl From<dcache::CacheResultRequest> for CacheMessages::CacheResult {
     fn from(value: dcache::CacheResultRequest) -> Self {
         Self {
@@ -399,3 +535,12 @@ impl From<dcache::CacheResultRequest> for CacheMessages::CacheResult {
         }
     }
 }
+
+impl From<dcache::RetrievePowRequest> for CacheMessages::VerifyCaptchaResult {
+    fn from(value: dcache::RetrievePowRequest) -> Self {
+        Self {
+            token: value.token,
+            key: value.key,
+        }
+    }
+}