From f959fc0397c3f3615e99bc28d2df549d9d52f277 Mon Sep 17 00:00:00 2001 From: stickies-v Date: Thu, 27 Jan 2022 22:23:51 +0000 Subject: [PATCH] Update // endpoints to use a '?count=' query parameter instead In most RESTful APIs, path parameters are used to represent resources, and query parameters are used to control how these resources are being filtered/sorted/... The old // functionality is kept alive to maintain backwards compatibility, but new paths with query parameters are introduced and documented as the default interface so future API methods don't break consistency by using query parameters. --- doc/REST-interface.md | 10 ++++-- src/rest.cpp | 52 +++++++++++++++++++++---------- test/functional/interface_rest.py | 45 +++++++++++++++++--------- 3 files changed, 74 insertions(+), 33 deletions(-) diff --git a/doc/REST-interface.md b/doc/REST-interface.md index 1f0a07a284..c359725faf 100644 --- a/doc/REST-interface.md +++ b/doc/REST-interface.md @@ -47,18 +47,24 @@ The HTTP request and response are both handled entirely in-memory. With the /notxdetails/ option JSON response will only contain the transaction hash instead of the complete transaction details. The option only affects the JSON response. #### Blockheaders -`GET /rest/headers//.` +`GET /rest/headers/.?count=` Given a block hash: returns amount of blockheaders in upward direction. Returns empty if the block doesn't exist or it isn't in the active chain. +*Deprecated (but not removed) since 24.0:* +`GET /rest/headers//.` + #### Blockfilter Headers -`GET /rest/blockfilterheaders///.` +`GET /rest/blockfilterheaders//.?count=` Given a block hash: returns amount of blockfilter headers in upward direction for the filter type . Returns empty if the block doesn't exist or it isn't in the active chain. +*Deprecated (but not removed) since 24.0:* +`GET /rest/blockfilterheaders///.` + #### Blockfilters `GET /rest/blockfilter//.` diff --git a/src/rest.cpp b/src/rest.cpp index ec9295b283..7025dd6ad1 100644 --- a/src/rest.cpp +++ b/src/rest.cpp @@ -194,15 +194,25 @@ static bool rest_headers(const std::any& context, std::vector path; boost::split(path, param, boost::is_any_of("/")); - if (path.size() != 2) - return RESTERR(req, HTTP_BAD_REQUEST, "No header count specified. Use /rest/headers//.."); - - const auto parsed_count{ToIntegral(path[0])}; - if (!parsed_count.has_value() || *parsed_count < 1 || *parsed_count > MAX_REST_HEADERS_RESULTS) { - return RESTERR(req, HTTP_BAD_REQUEST, strprintf("Header count is invalid or out of acceptable range (1-%u): %s", MAX_REST_HEADERS_RESULTS, path[0])); + std::string raw_count; + std::string hashStr; + if (path.size() == 2) { + // deprecated path: /rest/headers// + hashStr = path[1]; + raw_count = path[0]; + } else if (path.size() == 1) { + // new path with query parameter: /rest/headers/?count= + hashStr = path[0]; + raw_count = req->GetQueryParameter("count").value_or("5"); + } else { + return RESTERR(req, HTTP_BAD_REQUEST, "Invalid URI format. Expected /rest/headers/.?count="); + } + + const auto parsed_count{ToIntegral(raw_count)}; + if (!parsed_count.has_value() || *parsed_count < 1 || *parsed_count > MAX_REST_HEADERS_RESULTS) { + return RESTERR(req, HTTP_BAD_REQUEST, strprintf("Header count is invalid or out of acceptable range (1-%u): %s", MAX_REST_HEADERS_RESULTS, raw_count)); } - std::string hashStr = path[1]; uint256 hash; if (!ParseHashStr(hashStr, hash)) return RESTERR(req, HTTP_BAD_REQUEST, "Invalid hash: " + hashStr); @@ -354,13 +364,28 @@ static bool rest_filter_header(const std::any& context, HTTPRequest* req, const std::vector uri_parts; boost::split(uri_parts, param, boost::is_any_of("/")); - if (uri_parts.size() != 3) { - return RESTERR(req, HTTP_BAD_REQUEST, "Invalid URI format. Expected /rest/blockfilterheaders///"); + std::string raw_count; + std::string raw_blockhash; + if (uri_parts.size() == 3) { + // deprecated path: /rest/blockfilterheaders/// + raw_blockhash = uri_parts[2]; + raw_count = uri_parts[1]; + } else if (uri_parts.size() == 2) { + // new path with query parameter: /rest/blockfilterheaders//?count= + raw_blockhash = uri_parts[1]; + raw_count = req->GetQueryParameter("count").value_or("5"); + } else { + return RESTERR(req, HTTP_BAD_REQUEST, "Invalid URI format. Expected /rest/blockfilterheaders//.?count="); + } + + const auto parsed_count{ToIntegral(raw_count)}; + if (!parsed_count.has_value() || *parsed_count < 1 || *parsed_count > MAX_REST_HEADERS_RESULTS) { + return RESTERR(req, HTTP_BAD_REQUEST, strprintf("Header count is invalid or out of acceptable range (1-%u): %s", MAX_REST_HEADERS_RESULTS, raw_count)); } uint256 block_hash; - if (!ParseHashStr(uri_parts[2], block_hash)) { - return RESTERR(req, HTTP_BAD_REQUEST, "Invalid hash: " + uri_parts[2]); + if (!ParseHashStr(raw_blockhash, block_hash)) { + return RESTERR(req, HTTP_BAD_REQUEST, "Invalid hash: " + raw_blockhash); } BlockFilterType filtertype; @@ -373,11 +398,6 @@ static bool rest_filter_header(const std::any& context, HTTPRequest* req, const return RESTERR(req, HTTP_BAD_REQUEST, "Index is not enabled for filtertype " + uri_parts[0]); } - const auto parsed_count{ToIntegral(uri_parts[1])}; - if (!parsed_count.has_value() || *parsed_count < 1 || *parsed_count > MAX_REST_HEADERS_RESULTS) { - return RESTERR(req, HTTP_BAD_REQUEST, strprintf("Header count is invalid or out of acceptable range (1-%u): %s", MAX_REST_HEADERS_RESULTS, uri_parts[1])); - } - std::vector headers; headers.reserve(*parsed_count); { diff --git a/test/functional/interface_rest.py b/test/functional/interface_rest.py index a3d949c6a8..4f8676ec53 100755 --- a/test/functional/interface_rest.py +++ b/test/functional/interface_rest.py @@ -10,6 +10,7 @@ import http.client from io import BytesIO import json from struct import pack, unpack +import typing import urllib.parse @@ -57,14 +58,21 @@ class RESTTest (BitcoinTestFramework): args.append("-whitelist=noban@127.0.0.1") self.supports_cli = False - def test_rest_request(self, uri, http_method='GET', req_type=ReqType.JSON, body='', status=200, ret_type=RetType.JSON): + def test_rest_request( + self, + uri: str, + http_method: str = 'GET', + req_type: ReqType = ReqType.JSON, + body: str = '', + status: int = 200, + ret_type: RetType = RetType.JSON, + query_params: typing.Dict[str, typing.Any] = None, + ) -> typing.Union[http.client.HTTPResponse, bytes, str, None]: rest_uri = '/rest' + uri - if req_type == ReqType.JSON: - rest_uri += '.json' - elif req_type == ReqType.BIN: - rest_uri += '.bin' - elif req_type == ReqType.HEX: - rest_uri += '.hex' + if req_type in ReqType: + rest_uri += f'.{req_type.name.lower()}' + if query_params: + rest_uri += f'?{urllib.parse.urlencode(query_params)}' conn = http.client.HTTPConnection(self.url.hostname, self.url.port) self.log.debug(f'{http_method} {rest_uri} {body}') @@ -83,6 +91,8 @@ class RESTTest (BitcoinTestFramework): elif ret_type == RetType.JSON: return json.loads(resp.read().decode('utf-8'), parse_float=Decimal) + return None + def run_test(self): self.url = urllib.parse.urlparse(self.nodes[0].url) self.wallet = MiniWallet(self.nodes[0]) @@ -213,12 +223,12 @@ class RESTTest (BitcoinTestFramework): bb_hash = self.nodes[0].getbestblockhash() # Check result if block does not exists - assert_equal(self.test_rest_request(f"/headers/1/{UNKNOWN_PARAM}"), []) + assert_equal(self.test_rest_request(f"/headers/{UNKNOWN_PARAM}", query_params={"count": 1}), []) self.test_rest_request(f"/block/{UNKNOWN_PARAM}", status=404, ret_type=RetType.OBJ) # Check result if block is not in the active chain self.nodes[0].invalidateblock(bb_hash) - assert_equal(self.test_rest_request(f'/headers/1/{bb_hash}'), []) + assert_equal(self.test_rest_request(f'/headers/{bb_hash}', query_params={'count': 1}), []) self.test_rest_request(f'/block/{bb_hash}') self.nodes[0].reconsiderblock(bb_hash) @@ -228,7 +238,7 @@ class RESTTest (BitcoinTestFramework): response_bytes = response.read() # Compare with block header - response_header = self.test_rest_request(f"/headers/1/{bb_hash}", req_type=ReqType.BIN, ret_type=RetType.OBJ) + response_header = self.test_rest_request(f"/headers/{bb_hash}", req_type=ReqType.BIN, ret_type=RetType.OBJ, query_params={"count": 1}) assert_equal(int(response_header.getheader('content-length')), BLOCK_HEADER_SIZE) response_header_bytes = response_header.read() assert_equal(response_bytes[:BLOCK_HEADER_SIZE], response_header_bytes) @@ -240,7 +250,7 @@ class RESTTest (BitcoinTestFramework): assert_equal(response_bytes.hex().encode(), response_hex_bytes) # Compare with hex block header - response_header_hex = self.test_rest_request(f"/headers/1/{bb_hash}", req_type=ReqType.HEX, ret_type=RetType.OBJ) + response_header_hex = self.test_rest_request(f"/headers/{bb_hash}", req_type=ReqType.HEX, ret_type=RetType.OBJ, query_params={"count": 1}) assert_greater_than(int(response_header_hex.getheader('content-length')), BLOCK_HEADER_SIZE*2) response_header_hex_bytes = response_header_hex.read(BLOCK_HEADER_SIZE*2) assert_equal(response_bytes[:BLOCK_HEADER_SIZE].hex().encode(), response_header_hex_bytes) @@ -267,7 +277,7 @@ class RESTTest (BitcoinTestFramework): self.test_rest_request("/blockhashbyheight/", ret_type=RetType.OBJ, status=400) # Compare with json block header - json_obj = self.test_rest_request(f"/headers/1/{bb_hash}") + json_obj = self.test_rest_request(f"/headers/{bb_hash}", query_params={"count": 1}) assert_equal(len(json_obj), 1) # ensure that there is one header in the json response assert_equal(json_obj[0]['hash'], bb_hash) # request/response hash should be the same @@ -278,9 +288,9 @@ class RESTTest (BitcoinTestFramework): # See if we can get 5 headers in one response self.generate(self.nodes[1], 5) - json_obj = self.test_rest_request(f"/headers/5/{bb_hash}") + json_obj = self.test_rest_request(f"/headers/{bb_hash}", query_params={"count": 5}) assert_equal(len(json_obj), 5) # now we should have 5 header objects - json_obj = self.test_rest_request(f"/blockfilterheaders/basic/5/{bb_hash}") + json_obj = self.test_rest_request(f"/blockfilterheaders/basic/{bb_hash}", query_params={"count": 5}) first_filter_header = json_obj[0] assert_equal(len(json_obj), 5) # now we should have 5 filter header objects json_obj = self.test_rest_request(f"/blockfilter/basic/{bb_hash}") @@ -294,7 +304,7 @@ class RESTTest (BitcoinTestFramework): for num in ['5a', '-5', '0', '2001', '99999999999999999999999999999999999']: assert_equal( bytes(f'Header count is invalid or out of acceptable range (1-2000): {num}\r\n', 'ascii'), - self.test_rest_request(f"/headers/{num}/{bb_hash}", ret_type=RetType.BYTES, status=400), + self.test_rest_request(f"/headers/{bb_hash}", ret_type=RetType.BYTES, status=400, query_params={"count": num}), ) self.log.info("Test tx inclusion in the /mempool and /block URIs") @@ -351,6 +361,11 @@ class RESTTest (BitcoinTestFramework): json_obj = self.test_rest_request("/chaininfo") assert_equal(json_obj['bestblockhash'], bb_hash) + # Test compatibility of deprecated and newer endpoints + self.log.info("Test compatibility of deprecated and newer endpoints") + assert_equal(self.test_rest_request(f"/headers/{bb_hash}", query_params={"count": 1}), self.test_rest_request(f"/headers/1/{bb_hash}")) + assert_equal(self.test_rest_request(f"/blockfilterheaders/basic/{bb_hash}", query_params={"count": 1}), self.test_rest_request(f"/blockfilterheaders/basic/5/{bb_hash}")) + if __name__ == '__main__': RESTTest().main()