rpc: add configuration extension for MPT-backed iterator sessions
Add ability to switch between current blockchain storage and MPT-backed
storage for iterator traversing process. It may be useful because
iterator implementation traverses underlying backed storage (BoltDB,
LevelDB) inside DB's Seek which is blocking operation for BoltDB:
```
Opening a read transaction and a write transaction in the same goroutine
can cause the writer to deadlock because the database periodically needs
to re-mmap itself as it grows and it cannot do that while a read transaction
is open.
If a long running read transaction (for example, a snapshot transaction)
is needed, you might want to set DB.InitialMmapSize to a large enough
value to avoid potential blocking of write transaction.
```
So during bbolt re-mmaping, standard blockchain DB operations (i.e. persist)
can be blocked until iterator resourses release. The described behaviour
is tested and confirmed on four-nodes privnet with BoltDB and
`SessionExpirationTime` set to be 180 seconds. After new iterator session
is added to the server, the subsequent persist took ~5m21s, see the log
record `2022-06-17T18:58:21.563+0300`:
```
anna@kiwi:~/Documents/GitProjects/nspcc-dev/neo-go$ ./bin/neo-go node -p
2022-06-17T18:52:21.535+0300 INFO initial gas supply is not set or wrong, setting default value {"InitialGASSupply": "52000000"}
2022-06-17T18:52:21.535+0300 INFO MaxBlockSize is not set or wrong, setting default value {"MaxBlockSize": 262144}
2022-06-17T18:52:21.535+0300 INFO MaxBlockSystemFee is not set or wrong, setting default value {"MaxBlockSystemFee": 900000000000}
2022-06-17T18:52:21.535+0300 INFO MaxTransactionsPerBlock is not set or wrong, using default value {"MaxTransactionsPerBlock": 512}
2022-06-17T18:52:21.535+0300 INFO MaxValidUntilBlockIncrement is not set or wrong, using default value {"MaxValidUntilBlockIncrement": 5760}
2022-06-17T18:52:21.535+0300 INFO Hardforks are not set, using default value
2022-06-17T18:52:21.543+0300 INFO no storage version found! creating genesis block
2022-06-17T18:52:21.546+0300 INFO ExtensiblePoolSize is not set or wrong, using default value {"ExtensiblePoolSize": 20}
2022-06-17T18:52:21.546+0300 INFO service is running {"service": "Prometheus", "endpoint": ":2112"}
2022-06-17T18:52:21.547+0300 INFO starting rpc-server {"endpoint": ":20331"}
2022-06-17T18:52:21.547+0300 INFO rpc-server iterator sessions are enabled
2022-06-17T18:52:21.547+0300 INFO service hasn't started since it's disabled {"service": "Pprof"}
2022-06-17T18:52:21.547+0300 INFO node started {"blockHeight": 0, "headerHeight": 0}
_ ____________ __________
/ | / / ____/ __ \ / ____/ __ \
/ |/ / __/ / / / /_____/ / __/ / / /
/ /| / /___/ /_/ /_____/ /_/ / /_/ /
/_/ |_/_____/\____/ \____/\____/
/NEO-GO:0.99.1-pre-53-g7ccb646e/
2022-06-17T18:52:21.548+0300 INFO new peer connected {"addr": "127.0.0.1:20336", "peerCount": 1}
2022-06-17T18:52:21.550+0300 INFO started protocol {"addr": "127.0.0.1:20336", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 65, "id": 1475228436}
2022-06-17T18:52:22.575+0300 INFO persisted to disk {"blocks": 65, "keys": 1410, "headerHeight": 65, "blockHeight": 65, "took": "28.193409ms"}
2022-06-17T18:52:24.548+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 2}
2022-06-17T18:52:24.548+0300 INFO new peer connected {"addr": "127.0.0.1:20336", "peerCount": 3}
2022-06-17T18:52:24.548+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 4}
2022-06-17T18:52:24.549+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 5}
2022-06-17T18:52:24.549+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 6}
2022-06-17T18:52:24.549+0300 INFO started protocol {"addr": "127.0.0.1:20333", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 65, "id": 3444438498}
2022-06-17T18:52:24.549+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 7}
2022-06-17T18:52:24.549+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 8}
2022-06-17T18:52:24.550+0300 INFO node reached synchronized state, starting services
2022-06-17T18:52:24.550+0300 INFO started protocol {"addr": "127.0.0.1:20334", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 65, "id": 2435677826}
2022-06-17T18:52:24.550+0300 INFO starting state validation service
2022-06-17T18:52:24.550+0300 INFO RPC server already started
2022-06-17T18:52:24.550+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 9}
2022-06-17T18:52:24.550+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 10}
2022-06-17T18:52:24.550+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "already connected", "peerCount": 9}
2022-06-17T18:52:24.550+0300 WARN peer disconnected {"addr": "127.0.0.1:20336", "error": "already connected", "peerCount": 8}
2022-06-17T18:52:24.550+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "already connected", "peerCount": 7}
2022-06-17T18:52:24.550+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "unexpected empty payload: CMDVersion", "peerCount": 6}
2022-06-17T18:52:24.550+0300 INFO started protocol {"addr": "127.0.0.1:20335", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 65, "id": 970555896}
2022-06-17T18:52:24.551+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 7}
2022-06-17T18:52:24.551+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "unexpected empty payload: CMDVersion", "peerCount": 6}
2022-06-17T18:52:24.551+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "unexpected empty payload: CMDVersion", "peerCount": 5}
2022-06-17T18:52:24.551+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "already connected", "peerCount": 4}
2022-06-17T18:52:29.564+0300 INFO persisted to disk {"blocks": 1, "keys": 19, "headerHeight": 66, "blockHeight": 66, "took": "12.51808ms"}
2022-06-17T18:52:44.558+0300 INFO persisted to disk {"blocks": 1, "keys": 19, "headerHeight": 67, "blockHeight": 67, "took": "1.563137ms"}
2022-06-17T18:55:21.549+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "ping/pong timeout", "peerCount": 3}
2022-06-17T18:55:21.550+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "ping/pong timeout", "peerCount": 2}
2022-06-17T18:55:21.550+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "ping/pong timeout", "peerCount": 1}
2022-06-17T18:55:21.550+0300 WARN peer disconnected {"addr": "127.0.0.1:20336", "error": "ping/pong timeout", "peerCount": 0}
2022-06-17T18:55:21.553+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 1}
2022-06-17T18:55:21.554+0300 INFO started protocol {"addr": "127.0.0.1:20335", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 77, "id": 970555896}
2022-06-17T18:55:24.554+0300 INFO new peer connected {"addr": "172.200.0.4:20333", "peerCount": 2}
2022-06-17T18:55:24.555+0300 INFO new peer connected {"addr": "172.200.0.3:20334", "peerCount": 3}
2022-06-17T18:55:24.555+0300 INFO new peer connected {"addr": "10.78.13.84:59876", "peerCount": 4}
2022-06-17T18:55:24.555+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 5}
2022-06-17T18:55:24.556+0300 INFO new peer connected {"addr": "172.200.0.254:20332", "peerCount": 6}
2022-06-17T18:55:24.556+0300 INFO new peer connected {"addr": "127.0.0.1:20336", "peerCount": 7}
2022-06-17T18:55:24.556+0300 INFO started protocol {"addr": "172.200.0.4:20333", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 76, "id": 3444438498}
2022-06-17T18:55:24.556+0300 INFO new peer connected {"addr": "172.200.0.1:20335", "peerCount": 8}
2022-06-17T18:55:24.558+0300 INFO started protocol {"addr": "127.0.0.1:20336", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 77, "id": 1475228436}
2022-06-17T18:55:24.559+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 9}
2022-06-17T18:55:24.558+0300 INFO started protocol {"addr": "172.200.0.3:20334", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 77, "id": 2435677826}
2022-06-17T18:55:24.559+0300 INFO new peer connected {"addr": "127.0.0.1:20336", "peerCount": 10}
2022-06-17T18:55:24.559+0300 WARN peer disconnected {"addr": "172.200.0.1:20335", "error": "unexpected empty payload: CMDVersion", "peerCount": 9}
2022-06-17T18:55:24.559+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 10}
2022-06-17T18:55:24.560+0300 INFO new peer connected {"addr": "172.200.0.2:20336", "peerCount": 11}
2022-06-17T18:55:24.560+0300 WARN peer disconnected {"addr": "172.200.0.254:20332", "error": "identical node id", "peerCount": 10}
2022-06-17T18:55:24.561+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "already connected", "peerCount": 9}
2022-06-17T18:55:24.561+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 10}
2022-06-17T18:55:24.561+0300 WARN peer disconnected {"addr": "10.78.13.84:59876", "error": "unexpected empty payload: CMDVersion", "peerCount": 9}
2022-06-17T18:55:24.561+0300 WARN peer disconnected {"addr": "127.0.0.1:20336", "error": "already connected", "peerCount": 8}
2022-06-17T18:55:24.561+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 9}
2022-06-17T18:55:24.561+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "unexpected empty payload: CMDVersion", "peerCount": 8}
2022-06-17T18:55:24.561+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 9}
2022-06-17T18:55:24.561+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "unexpected empty payload: CMDVersion", "peerCount": 8}
2022-06-17T18:55:24.561+0300 WARN peer disconnected {"addr": "172.200.0.2:20336", "error": "unexpected empty payload: CMDVersion", "peerCount": 7}
2022-06-17T18:55:24.561+0300 INFO new peer connected {"addr": "127.0.0.1:20336", "peerCount": 8}
2022-06-17T18:55:24.561+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 9}
2022-06-17T18:55:24.561+0300 WARN peer disconnected {"addr": "127.0.0.1:20336", "error": "already connected", "peerCount": 8}
2022-06-17T18:55:24.561+0300 INFO new peer connected {"addr": "127.0.0.1:20336", "peerCount": 9}
2022-06-17T18:55:24.561+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 10}
2022-06-17T18:55:24.561+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 11}
2022-06-17T18:55:24.561+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 12}
2022-06-17T18:55:24.562+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "already connected", "peerCount": 11}
2022-06-17T18:55:24.562+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 12}
2022-06-17T18:55:24.562+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 13}
2022-06-17T18:55:24.562+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "already connected", "peerCount": 12}
2022-06-17T18:55:24.562+0300 WARN peer disconnected {"addr": "127.0.0.1:20336", "error": "already connected", "peerCount": 11}
2022-06-17T18:55:24.562+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "already connected", "peerCount": 10}
2022-06-17T18:55:24.562+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "unexpected empty payload: CMDVersion", "peerCount": 9}
2022-06-17T18:55:24.563+0300 INFO new peer connected {"addr": "127.0.0.1:20336", "peerCount": 10}
2022-06-17T18:55:24.563+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "already connected", "peerCount": 9}
2022-06-17T18:55:24.563+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "unexpected empty payload: CMDVersion", "peerCount": 8}
2022-06-17T18:55:24.563+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "already connected", "peerCount": 7}
2022-06-17T18:55:24.563+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "max peers reached", "peerCount": 6}
2022-06-17T18:55:24.563+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "already connected", "peerCount": 5}
2022-06-17T18:55:24.563+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "max peers reached", "peerCount": 4}
2022-06-17T18:55:24.563+0300 WARN peer disconnected {"addr": "127.0.0.1:20336", "error": "already connected", "peerCount": 3}
2022-06-17T18:57:21.551+0300 WARN peer disconnected {"addr": "172.200.0.4:20333", "error": "ping/pong timeout", "peerCount": 2}
2022-06-17T18:57:21.552+0300 WARN peer disconnected {"addr": "172.200.0.3:20334", "error": "ping/pong timeout", "peerCount": 1}
2022-06-17T18:57:21.552+0300 WARN peer disconnected {"addr": "127.0.0.1:20336", "error": "ping/pong timeout", "peerCount": 0}
2022-06-17T18:57:21.553+0300 INFO new peer connected {"addr": "172.200.0.4:20333", "peerCount": 1}
2022-06-17T18:57:21.554+0300 INFO new peer connected {"addr": "10.78.13.84:20332", "peerCount": 2}
2022-06-17T18:57:21.555+0300 INFO started protocol {"addr": "172.200.0.4:20333", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 82, "id": 3444438498}
2022-06-17T18:57:21.556+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 3}
2022-06-17T18:57:21.556+0300 INFO new peer connected {"addr": "10.78.13.84:46076", "peerCount": 4}
2022-06-17T18:57:21.556+0300 INFO new peer connected {"addr": "172.200.0.1:20335", "peerCount": 5}
2022-06-17T18:57:21.556+0300 INFO new peer connected {"addr": "172.200.0.254:20332", "peerCount": 6}
2022-06-17T18:57:21.556+0300 INFO new peer connected {"addr": "10.78.13.84:59972", "peerCount": 7}
2022-06-17T18:57:21.557+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 8}
2022-06-17T18:57:21.557+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 9}
2022-06-17T18:57:21.557+0300 INFO new peer connected {"addr": "172.200.0.2:20336", "peerCount": 10}
2022-06-17T18:57:21.557+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 11}
2022-06-17T18:57:21.557+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 12}
2022-06-17T18:57:21.557+0300 INFO new peer connected {"addr": "172.200.0.3:20334", "peerCount": 13}
2022-06-17T18:57:21.557+0300 INFO new peer connected {"addr": "127.0.0.1:20336", "peerCount": 14}
2022-06-17T18:57:21.557+0300 INFO started protocol {"addr": "127.0.0.1:20334", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 82, "id": 2435677826}
2022-06-17T18:57:21.557+0300 WARN peer disconnected {"addr": "172.200.0.2:20336", "error": "max peers reached", "peerCount": 13}
2022-06-17T18:57:21.557+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 14}
2022-06-17T18:57:21.558+0300 INFO started protocol {"addr": "172.200.0.1:20335", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 82, "id": 970555896}
2022-06-17T18:57:21.558+0300 WARN peer disconnected {"addr": "172.200.0.254:20332", "error": "identical node id", "peerCount": 13}
2022-06-17T18:57:21.558+0300 INFO new peer connected {"addr": "127.0.0.1:20334", "peerCount": 14}
2022-06-17T18:57:21.558+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "max peers reached", "peerCount": 13}
2022-06-17T18:57:21.558+0300 WARN peer disconnected {"addr": "10.78.13.84:46076", "error": "identical node id", "peerCount": 12}
2022-06-17T18:57:21.558+0300 INFO new peer connected {"addr": "127.0.0.1:20333", "peerCount": 13}
2022-06-17T18:57:21.558+0300 INFO new peer connected {"addr": "127.0.0.1:20335", "peerCount": 14}
2022-06-17T18:57:21.558+0300 INFO new peer connected {"addr": "127.0.0.1:20336", "peerCount": 15}
2022-06-17T18:57:21.558+0300 WARN peer disconnected {"addr": "10.78.13.84:59972", "error": "identical node id", "peerCount": 14}
2022-06-17T18:57:21.558+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "already connected", "peerCount": 13}
2022-06-17T18:57:21.559+0300 WARN peer disconnected {"addr": "10.78.13.84:20332", "error": "unexpected empty payload: CMDVersion", "peerCount": 12}
2022-06-17T18:57:21.559+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "already connected", "peerCount": 11}
2022-06-17T18:57:21.559+0300 WARN peer disconnected {"addr": "172.200.0.3:20334", "error": "unexpected empty payload: CMDVersion", "peerCount": 10}
2022-06-17T18:57:21.559+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "unexpected empty payload: CMDVersion", "peerCount": 9}
2022-06-17T18:57:21.559+0300 WARN peer disconnected {"addr": "127.0.0.1:20334", "error": "already connected", "peerCount": 8}
2022-06-17T18:57:21.559+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "unexpected empty payload: CMDVersion", "peerCount": 7}
2022-06-17T18:57:21.559+0300 INFO started protocol {"addr": "127.0.0.1:20336", "userAgent": "/NEO-GO:0.99.1-pre-53-g7ccb646e/", "startHeight": 82, "id": 1475228436}
2022-06-17T18:57:21.559+0300 WARN peer disconnected {"addr": "127.0.0.1:20333", "error": "already connected", "peerCount": 6}
2022-06-17T18:57:21.559+0300 WARN peer disconnected {"addr": "127.0.0.1:20335", "error": "already connected", "peerCount": 5}
2022-06-17T18:57:21.559+0300 WARN peer disconnected {"addr": "127.0.0.1:20336", "error": "already connected", "peerCount": 4}
2022-06-17T18:58:21.561+0300 INFO persisted to disk {"blocks": 1, "keys": 20, "headerHeight": 68, "blockHeight": 68, "took": "5m21.993873018s"}
2022-06-17T18:58:21.563+0300 INFO persisted to disk {"blocks": 8, "keys": 111, "headerHeight": 76, "blockHeight": 76, "took": "2.243347ms"}
2022-06-17T18:58:22.567+0300 INFO persisted to disk {"blocks": 10, "keys": 135, "headerHeight": 86, "blockHeight": 86, "took": "5.637669ms"}
2022-06-17T18:58:25.565+0300 INFO persisted to disk {"blocks": 1, "keys": 19, "headerHeight": 87, "blockHeight": 87, "took": "1.879912ms"}
2022-06-17T18:58:40.572+0300 INFO persisted to disk {"blocks": 1, "keys": 20, "headerHeight": 88, "blockHeight": 88, "took": "1.560317ms"}
2022-06-17T18:58:55.579+0300 INFO persisted to disk {"blocks": 1, "keys": 19, "headerHeight": 89, "blockHeight": 89, "took": "1.925225ms"}
2022-06-17T18:59:10.587+0300 INFO persisted to disk {"blocks": 1, "keys": 19, "headerHeight": 90, "blockHeight": 90, "took": "3.118073ms"}
2022-06-17T18:59:25.592+0300 INFO persisted to disk {"blocks": 1, "keys": 19, "headerHeight": 91, "blockHeight": 91, "took": "1.607248ms"}
2022-06-17T18:59:40.600+0300 INFO persisted to disk {"blocks": 1, "keys": 20, "headerHeight": 92, "blockHeight": 92, "took": "931.806µs"}
2022-06-17T18:59:55.610+0300 INFO persisted to disk {"blocks": 1, "keys": 19, "headerHeight": 93, "blockHeight": 93, "took": "2.019041ms"}
```
This commit is contained in:
Anna Shaleva
parent
cbd20eb959
commit
b5d39a3ffd
5 changed files with 244 additions and 71 deletions
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@ -138,6 +138,7 @@ RPC:
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Port: 10332
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Port: 10332
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SessionEnabled: false
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SessionEnabled: false
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SessionExpirationTime: 60
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SessionExpirationTime: 60
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SessionBackedByMPT: false
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StartWhenSynchronized: false
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StartWhenSynchronized: false
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TLSConfig:
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TLSConfig:
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Address: ""
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Address: ""
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@ -167,10 +168,28 @@ where:
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`terminatesession` JSON-RPC calls will be handled by the server. It is not
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`terminatesession` JSON-RPC calls will be handled by the server. It is not
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recommended to enable this setting for public RPC servers due to possible DoS
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recommended to enable this setting for public RPC servers due to possible DoS
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attack. Set to `false` by default. If `false`, iterators are expanded into a
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attack. Set to `false` by default. If `false`, iterators are expanded into a
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set of values (see `MaxIteratorResultItems` setting).
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set of values (see `MaxIteratorResultItems` setting). Implementation note: when
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BoltDB storage is used as a node backend DB, then enabling iterator sessions may
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|
cause blockchain persist delays up to 2*`SessionExpirationTime` seconds on
|
||||||
|
early blockchain lifetime stages with relatively small DB size. It can happen
|
||||||
|
due to BoltDB re-mmapping behaviour traits. If regular persist is a critical
|
||||||
|
requirement, then we recommend either to decrease `SessionExpirationTime` or to
|
||||||
|
enable `SessionBackedByMPT`, see `SessionBackedByMPT` documentation for more
|
||||||
|
details.
|
||||||
- `SessionExpirationTime` is a lifetime of iterator session in seconds. It is set
|
- `SessionExpirationTime` is a lifetime of iterator session in seconds. It is set
|
||||||
to `60` seconds by default and is relevant only if `SessionEnabled` is set to
|
to `60` seconds by default and is relevant only if `SessionEnabled` is set to
|
||||||
`true`.
|
`true`.
|
||||||
|
- `SessionBackedByMPT` is a flag forcing JSON-RPC server into using MPT-backed
|
||||||
|
storage for delayed iterator traversal. If `true`, then iterator resources got
|
||||||
|
after `invoke*` calls will be released immediately. Further iterator traversing
|
||||||
|
will be performed using MPT-backed storage by retrieving iterator via historical
|
||||||
|
MPT-provided `invoke*` recall. `SessionBackedByMPT` set to `true` strongly affects
|
||||||
|
the `traverseiterator` call performance and doesn't allow iterator traversing
|
||||||
|
for outdated or removed states (see `KeepOnlyLatestState` and
|
||||||
|
`RemoveUntraceableBlocks` settings documentation for details), thus, it is not
|
||||||
|
recommended to enable `SessionBackedByMPT` needlessly. `SessionBackedByMPT` is
|
||||||
|
set to `false` by default and is relevant only if `SessionEnabled` is set to
|
||||||
|
`true`.
|
||||||
- `StartWhenSynchronized` controls when RPC server will be started, by default
|
- `StartWhenSynchronized` controls when RPC server will be started, by default
|
||||||
(`false` setting) it's started immediately and RPC is availabe during node
|
(`false` setting) it's started immediately and RPC is availabe during node
|
||||||
synchronization. Setting it to `true` will make the node start RPC service only
|
synchronization. Setting it to `true` will make the node start RPC service only
|
||||||
|
|
|
||||||
|
|
@ -10,6 +10,8 @@ import (
|
||||||
"github.com/nspcc-dev/neo-go/pkg/core/state"
|
"github.com/nspcc-dev/neo-go/pkg/core/state"
|
||||||
"github.com/nspcc-dev/neo-go/pkg/core/storage"
|
"github.com/nspcc-dev/neo-go/pkg/core/storage"
|
||||||
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
|
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
|
||||||
|
"github.com/nspcc-dev/neo-go/pkg/smartcontract/trigger"
|
||||||
|
"github.com/nspcc-dev/neo-go/pkg/util"
|
||||||
"github.com/nspcc-dev/neo-go/pkg/vm"
|
"github.com/nspcc-dev/neo-go/pkg/vm"
|
||||||
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
|
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
|
||||||
)
|
)
|
||||||
|
|
@ -29,9 +31,20 @@ type Invoke struct {
|
||||||
Session uuid.UUID
|
Session uuid.UUID
|
||||||
finalize func()
|
finalize func()
|
||||||
onNewSession OnNewSession
|
onNewSession OnNewSession
|
||||||
|
// invocationParams is non-nil iff MPT-based iterator sessions are supported.
|
||||||
|
invocationParams *InvocationParams
|
||||||
}
|
}
|
||||||
|
|
||||||
type OnNewSession func(sessionID string, iterators []ServerIterator, finalize func())
|
type OnNewSession func(sessionID string, iterators []IteratorIdentifier, params *InvocationParams, finalize func())
|
||||||
|
|
||||||
|
// InvocationParams is a set of parameters used for invoke* calls.
|
||||||
|
type InvocationParams struct {
|
||||||
|
Trigger trigger.Type
|
||||||
|
Script []byte
|
||||||
|
ContractScriptHash util.Uint160
|
||||||
|
Transaction *transaction.Transaction
|
||||||
|
NextBlockHeight uint32
|
||||||
|
}
|
||||||
|
|
||||||
// InvokeDiag is an additional diagnostic data for invocation.
|
// InvokeDiag is an additional diagnostic data for invocation.
|
||||||
type InvokeDiag struct {
|
type InvokeDiag struct {
|
||||||
|
|
@ -40,7 +53,7 @@ type InvokeDiag struct {
|
||||||
}
|
}
|
||||||
|
|
||||||
// NewInvoke returns a new Invoke structure with the given fields set.
|
// NewInvoke returns a new Invoke structure with the given fields set.
|
||||||
func NewInvoke(ic *interop.Context, script []byte, faultException string, registerSession OnNewSession, maxIteratorResultItems int) *Invoke {
|
func NewInvoke(ic *interop.Context, script []byte, faultException string, registerSession OnNewSession, maxIteratorResultItems int, params *InvocationParams) *Invoke {
|
||||||
var diag *InvokeDiag
|
var diag *InvokeDiag
|
||||||
tree := ic.VM.GetInvocationTree()
|
tree := ic.VM.GetInvocationTree()
|
||||||
if tree != nil {
|
if tree != nil {
|
||||||
|
|
@ -64,6 +77,7 @@ func NewInvoke(ic *interop.Context, script []byte, faultException string, regist
|
||||||
finalize: ic.Finalize,
|
finalize: ic.Finalize,
|
||||||
onNewSession: registerSession,
|
onNewSession: registerSession,
|
||||||
maxIteratorResultItems: maxIteratorResultItems,
|
maxIteratorResultItems: maxIteratorResultItems,
|
||||||
|
invocationParams: params,
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
@ -105,10 +119,13 @@ type Iterator struct {
|
||||||
Truncated bool
|
Truncated bool
|
||||||
}
|
}
|
||||||
|
|
||||||
// ServerIterator represents Iterator on the server side. It is not for Client usage.
|
// IteratorIdentifier represents Iterator identifier on the server side. It is not for Client usage.
|
||||||
type ServerIterator struct {
|
type IteratorIdentifier struct {
|
||||||
ID string
|
ID string
|
||||||
|
// Item represents Iterator stackitem. It is nil if SessionBackedByMPT is set to true.
|
||||||
Item stackitem.Item
|
Item stackitem.Item
|
||||||
|
// StackIndex represents Iterator stackitem index on the stack. It is valid iff Item is nil.
|
||||||
|
StackIndex int
|
||||||
}
|
}
|
||||||
|
|
||||||
// Finalize releases resources occupied by Iterators created at the script invocation.
|
// Finalize releases resources occupied by Iterators created at the script invocation.
|
||||||
|
|
@ -129,7 +146,7 @@ func (r Invoke) MarshalJSON() ([]byte, error) {
|
||||||
arr = make([]json.RawMessage, len(r.Stack))
|
arr = make([]json.RawMessage, len(r.Stack))
|
||||||
sessionsEnabled = r.onNewSession != nil
|
sessionsEnabled = r.onNewSession != nil
|
||||||
sessionID string
|
sessionID string
|
||||||
iterators []ServerIterator
|
iterators []IteratorIdentifier
|
||||||
)
|
)
|
||||||
if len(r.FaultException) != 0 {
|
if len(r.FaultException) != 0 {
|
||||||
faultSep = " / "
|
faultSep = " / "
|
||||||
|
|
@ -149,10 +166,13 @@ arrloop:
|
||||||
r.FaultException += fmt.Sprintf("%sjson error: failed to marshal iterator: %v", faultSep, err)
|
r.FaultException += fmt.Sprintf("%sjson error: failed to marshal iterator: %v", faultSep, err)
|
||||||
break
|
break
|
||||||
}
|
}
|
||||||
iterators = append(iterators, ServerIterator{
|
ident := IteratorIdentifier{ID: iteratorID}
|
||||||
ID: iteratorID,
|
if r.invocationParams == nil {
|
||||||
Item: r.Stack[i],
|
ident.Item = r.Stack[i]
|
||||||
})
|
} else {
|
||||||
|
ident.StackIndex = i
|
||||||
|
}
|
||||||
|
iterators = append(iterators, ident)
|
||||||
} else {
|
} else {
|
||||||
iteratorValues, truncated := iterator.ValuesTruncated(r.Stack[i], r.maxIteratorResultItems)
|
iteratorValues, truncated := iterator.ValuesTruncated(r.Stack[i], r.maxIteratorResultItems)
|
||||||
value := make([]json.RawMessage, len(iteratorValues))
|
value := make([]json.RawMessage, len(iteratorValues))
|
||||||
|
|
@ -185,11 +205,17 @@ arrloop:
|
||||||
|
|
||||||
if sessionsEnabled && len(iterators) != 0 {
|
if sessionsEnabled && len(iterators) != 0 {
|
||||||
sessionID = uuid.NewString()
|
sessionID = uuid.NewString()
|
||||||
r.onNewSession(sessionID, iterators, r.Finalize)
|
if r.invocationParams == nil {
|
||||||
|
r.onNewSession(sessionID, iterators, nil, r.Finalize)
|
||||||
} else {
|
} else {
|
||||||
|
// Call finalizer manually if MPT-based iterator sessions are enabled.
|
||||||
|
defer r.Finalize()
|
||||||
|
r.onNewSession(sessionID, iterators, r.invocationParams, nil)
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
// Call finalizer manually if iterators are disabled or there's no iterator on stack.
|
||||||
defer r.Finalize()
|
defer r.Finalize()
|
||||||
}
|
}
|
||||||
|
|
||||||
if err == nil {
|
if err == nil {
|
||||||
st, err = json.Marshal(arr)
|
st, err = json.Marshal(arr)
|
||||||
if err != nil {
|
if err != nil {
|
||||||
|
|
|
||||||
|
|
@ -19,6 +19,7 @@ type (
|
||||||
Port uint16 `yaml:"Port"`
|
Port uint16 `yaml:"Port"`
|
||||||
SessionEnabled bool `yaml:"SessionEnabled"`
|
SessionEnabled bool `yaml:"SessionEnabled"`
|
||||||
SessionExpirationTime int `yaml:"SessionExpirationTime"`
|
SessionExpirationTime int `yaml:"SessionExpirationTime"`
|
||||||
|
SessionBackedByMPT bool `yaml:"SessionBackedByMPT"`
|
||||||
StartWhenSynchronized bool `yaml:"StartWhenSynchronized"`
|
StartWhenSynchronized bool `yaml:"StartWhenSynchronized"`
|
||||||
TLSConfig TLSConfig `yaml:"TLSConfig"`
|
TLSConfig TLSConfig `yaml:"TLSConfig"`
|
||||||
}
|
}
|
||||||
|
|
|
||||||
|
|
@ -5,7 +5,10 @@ import (
|
||||||
"context"
|
"context"
|
||||||
"encoding/base64"
|
"encoding/base64"
|
||||||
"encoding/hex"
|
"encoding/hex"
|
||||||
|
"fmt"
|
||||||
"math/big"
|
"math/big"
|
||||||
|
"net/http"
|
||||||
|
"net/http/httptest"
|
||||||
"sort"
|
"sort"
|
||||||
"strings"
|
"strings"
|
||||||
"sync"
|
"sync"
|
||||||
|
|
@ -23,6 +26,7 @@ import (
|
||||||
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
|
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
|
||||||
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
|
"github.com/nspcc-dev/neo-go/pkg/encoding/address"
|
||||||
"github.com/nspcc-dev/neo-go/pkg/io"
|
"github.com/nspcc-dev/neo-go/pkg/io"
|
||||||
|
"github.com/nspcc-dev/neo-go/pkg/network"
|
||||||
"github.com/nspcc-dev/neo-go/pkg/rpc/client"
|
"github.com/nspcc-dev/neo-go/pkg/rpc/client"
|
||||||
"github.com/nspcc-dev/neo-go/pkg/rpc/client/nns"
|
"github.com/nspcc-dev/neo-go/pkg/rpc/client/nns"
|
||||||
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
|
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
|
||||||
|
|
@ -1260,24 +1264,47 @@ func TestClient_InvokeAndPackIteratorResults(t *testing.T) {
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
func TestClient_IteratorFromInvocation(t *testing.T) {
|
func TestClient_Iterator_SessionConfigVariations(t *testing.T) {
|
||||||
chain, rpcSrv, httpSrv := initClearServerWithServices(t, false, false, true)
|
var expected [][]byte
|
||||||
|
storageHash, err := util.Uint160DecodeStringLE(storageContractHash)
|
||||||
|
require.NoError(t, err)
|
||||||
|
// storageItemsCount is the amount of storage items stored in Storage contract, it's hard-coded in the contract code.
|
||||||
|
const storageItemsCount = 255
|
||||||
|
|
||||||
|
checkSessionEnabled := func(t *testing.T, c *client.Client) {
|
||||||
|
// We expect Iterator with designated ID to be presented on stack. It should be possible to retrieve its values via `traverseiterator` call.
|
||||||
|
res, err := c.InvokeFunction(storageHash, "iterateOverValues", []smartcontract.Parameter{}, nil)
|
||||||
|
require.NoError(t, err)
|
||||||
|
require.NotEmpty(t, res.Session)
|
||||||
|
require.Equal(t, 1, len(res.Stack))
|
||||||
|
require.Equal(t, stackitem.InteropT, res.Stack[0].Type())
|
||||||
|
iterator, ok := res.Stack[0].Value().(result.Iterator)
|
||||||
|
require.True(t, ok)
|
||||||
|
require.NotEmpty(t, iterator.ID)
|
||||||
|
require.Empty(t, iterator.Values)
|
||||||
|
max := 84
|
||||||
|
actual, err := c.TraverseIterator(res.Session, *iterator.ID, max)
|
||||||
|
require.NoError(t, err)
|
||||||
|
require.Equal(t, max, len(actual))
|
||||||
|
for i := 0; i < max; i++ {
|
||||||
|
// According to the Storage contract code.
|
||||||
|
require.Equal(t, expected[i], actual[i].Value().([]byte), i)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
t.Run("default sessions enabled", func(t *testing.T) {
|
||||||
|
chain, rpcSrv, httpSrv := initClearServerWithServices(t, false, false, false)
|
||||||
|
defer chain.Close()
|
||||||
|
defer rpcSrv.Shutdown()
|
||||||
for _, b := range getTestBlocks(t) {
|
for _, b := range getTestBlocks(t) {
|
||||||
require.NoError(t, chain.AddBlock(b))
|
require.NoError(t, chain.AddBlock(b))
|
||||||
}
|
}
|
||||||
defer chain.Close()
|
|
||||||
defer rpcSrv.Shutdown()
|
|
||||||
|
|
||||||
c, err := client.New(context.Background(), httpSrv.URL, client.Options{})
|
c, err := client.New(context.Background(), httpSrv.URL, client.Options{})
|
||||||
require.NoError(t, err)
|
require.NoError(t, err)
|
||||||
require.NoError(t, c.Init())
|
require.NoError(t, c.Init())
|
||||||
|
|
||||||
storageHash, err := util.Uint160DecodeStringLE(storageContractHash)
|
// Fill in expected stackitems set during the first test.
|
||||||
require.NoError(t, err)
|
expected = make([][]byte, storageItemsCount)
|
||||||
|
|
||||||
// storageItemsCount is the amount of storage items stored in Storage contract, it's hard-coded in the contract code.
|
|
||||||
const storageItemsCount = 255
|
|
||||||
expected := make([][]byte, storageItemsCount)
|
|
||||||
for i := 0; i < storageItemsCount; i++ {
|
for i := 0; i < storageItemsCount; i++ {
|
||||||
expected[i] = stackitem.NewBigInteger(big.NewInt(int64(i))).Bytes()
|
expected[i] = stackitem.NewBigInteger(big.NewInt(int64(i))).Bytes()
|
||||||
}
|
}
|
||||||
|
|
@ -1287,7 +1314,49 @@ func TestClient_IteratorFromInvocation(t *testing.T) {
|
||||||
}
|
}
|
||||||
return bytes.Compare(expected[i], expected[j]) < 0
|
return bytes.Compare(expected[i], expected[j]) < 0
|
||||||
})
|
})
|
||||||
|
checkSessionEnabled(t, c)
|
||||||
|
})
|
||||||
|
t.Run("MPT-based sessions enables", func(t *testing.T) {
|
||||||
|
// Prepare MPT-enabled RPC server.
|
||||||
|
chain, orc, cfg, logger := getUnitTestChainWithCustomConfig(t, false, false, func(cfg *config.Config) {
|
||||||
|
cfg.ApplicationConfiguration.RPC.SessionEnabled = true
|
||||||
|
cfg.ApplicationConfiguration.RPC.SessionBackedByMPT = true
|
||||||
|
})
|
||||||
|
serverConfig := network.NewServerConfig(cfg)
|
||||||
|
serverConfig.UserAgent = fmt.Sprintf(config.UserAgentFormat, "0.98.6-test")
|
||||||
|
serverConfig.Port = 0
|
||||||
|
server, err := network.NewServer(serverConfig, chain, chain.GetStateSyncModule(), logger)
|
||||||
|
require.NoError(t, err)
|
||||||
|
errCh := make(chan error, 2)
|
||||||
|
rpcSrv := New(chain, cfg.ApplicationConfiguration.RPC, server, orc, logger, errCh)
|
||||||
|
rpcSrv.Start()
|
||||||
|
handler := http.HandlerFunc(rpcSrv.handleHTTPRequest)
|
||||||
|
httpSrv := httptest.NewServer(handler)
|
||||||
|
defer chain.Close()
|
||||||
|
defer rpcSrv.Shutdown()
|
||||||
|
for _, b := range getTestBlocks(t) {
|
||||||
|
require.NoError(t, chain.AddBlock(b))
|
||||||
|
}
|
||||||
|
|
||||||
|
c, err := client.New(context.Background(), httpSrv.URL, client.Options{})
|
||||||
|
require.NoError(t, err)
|
||||||
|
require.NoError(t, c.Init())
|
||||||
|
|
||||||
|
checkSessionEnabled(t, c)
|
||||||
|
})
|
||||||
|
t.Run("sessions disabled", func(t *testing.T) {
|
||||||
|
chain, rpcSrv, httpSrv := initClearServerWithServices(t, false, false, true)
|
||||||
|
defer chain.Close()
|
||||||
|
defer rpcSrv.Shutdown()
|
||||||
|
for _, b := range getTestBlocks(t) {
|
||||||
|
require.NoError(t, chain.AddBlock(b))
|
||||||
|
}
|
||||||
|
|
||||||
|
c, err := client.New(context.Background(), httpSrv.URL, client.Options{})
|
||||||
|
require.NoError(t, err)
|
||||||
|
require.NoError(t, c.Init())
|
||||||
|
|
||||||
|
// We expect unpacked iterator values to be present on stack under InteropInterface cover.
|
||||||
res, err := c.InvokeFunction(storageHash, "iterateOverValues", []smartcontract.Parameter{}, nil)
|
res, err := c.InvokeFunction(storageHash, "iterateOverValues", []smartcontract.Parameter{}, nil)
|
||||||
require.NoError(t, err)
|
require.NoError(t, err)
|
||||||
require.NotEmpty(t, res.Session)
|
require.NotEmpty(t, res.Session)
|
||||||
|
|
@ -1303,4 +1372,5 @@ func TestClient_IteratorFromInvocation(t *testing.T) {
|
||||||
// According to the Storage contract code.
|
// According to the Storage contract code.
|
||||||
require.Equal(t, expected[i], iterator.Values[i].Value().([]byte), i)
|
require.Equal(t, expected[i], iterator.Values[i].Value().([]byte), i)
|
||||||
}
|
}
|
||||||
|
})
|
||||||
}
|
}
|
||||||
|
|
|
||||||
|
|
@ -93,8 +93,12 @@ type (
|
||||||
// session holds a set of iterators got after invoke* call with corresponding
|
// session holds a set of iterators got after invoke* call with corresponding
|
||||||
// finalizer and session expiration time.
|
// finalizer and session expiration time.
|
||||||
session struct {
|
session struct {
|
||||||
|
params *result.InvocationParams
|
||||||
iteratorsLock sync.Mutex
|
iteratorsLock sync.Mutex
|
||||||
iterators []result.ServerIterator
|
iteratorIdentifiers []result.IteratorIdentifier
|
||||||
|
// iterators stores the set of Iterator stackitems for the current session got from MPT-backed storage.
|
||||||
|
// iterators is non-nil iff SessionBackedByMPT is enabled.
|
||||||
|
iterators []stackitem.Item
|
||||||
timer *time.Timer
|
timer *time.Timer
|
||||||
finalize func()
|
finalize func()
|
||||||
}
|
}
|
||||||
|
|
@ -1911,12 +1915,7 @@ func (s *Server) getFakeNextBlock(nextBlockHeight uint32) (*block.Block, error)
|
||||||
return b, nil
|
return b, nil
|
||||||
}
|
}
|
||||||
|
|
||||||
// runScriptInVM runs the given script in a new test VM and returns the invocation
|
func (s *Server) prepareInvocationContext(t trigger.Type, script []byte, contractScriptHash util.Uint160, tx *transaction.Transaction, b *block.Block, verbose bool) (*interop.Context, *response.Error) {
|
||||||
// result. The script is either a simple script in case of `application` trigger,
|
|
||||||
// witness invocation script in case of `verification` trigger (it pushes `verify`
|
|
||||||
// arguments on stack before verification). In case of contract verification
|
|
||||||
// contractScriptHash should be specified.
|
|
||||||
func (s *Server) runScriptInVM(t trigger.Type, script []byte, contractScriptHash util.Uint160, tx *transaction.Transaction, b *block.Block, verbose bool) (*result.Invoke, *response.Error) {
|
|
||||||
var (
|
var (
|
||||||
err error
|
err error
|
||||||
ic *interop.Context
|
ic *interop.Context
|
||||||
|
|
@ -1952,21 +1951,46 @@ func (s *Server) runScriptInVM(t trigger.Type, script []byte, contractScriptHash
|
||||||
} else {
|
} else {
|
||||||
ic.VM.LoadScriptWithFlags(script, callflag.All)
|
ic.VM.LoadScriptWithFlags(script, callflag.All)
|
||||||
}
|
}
|
||||||
err = ic.VM.Run()
|
return ic, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
// runScriptInVM runs the given script in a new test VM and returns the invocation
|
||||||
|
// result. The script is either a simple script in case of `application` trigger,
|
||||||
|
// witness invocation script in case of `verification` trigger (it pushes `verify`
|
||||||
|
// arguments on stack before verification). In case of contract verification
|
||||||
|
// contractScriptHash should be specified.
|
||||||
|
func (s *Server) runScriptInVM(t trigger.Type, script []byte, contractScriptHash util.Uint160, tx *transaction.Transaction, b *block.Block, verbose bool) (*result.Invoke, *response.Error) {
|
||||||
|
ic, respErr := s.prepareInvocationContext(t, script, contractScriptHash, tx, b, verbose)
|
||||||
|
if respErr != nil {
|
||||||
|
return nil, respErr
|
||||||
|
}
|
||||||
|
err := ic.VM.Run()
|
||||||
var faultException string
|
var faultException string
|
||||||
if err != nil {
|
if err != nil {
|
||||||
faultException = err.Error()
|
faultException = err.Error()
|
||||||
}
|
}
|
||||||
var registerSession result.OnNewSession
|
var (
|
||||||
|
registerSession result.OnNewSession
|
||||||
|
params *result.InvocationParams
|
||||||
|
)
|
||||||
if s.config.SessionEnabled {
|
if s.config.SessionEnabled {
|
||||||
registerSession = s.registerSession
|
registerSession = s.registerSession
|
||||||
|
if s.config.SessionBackedByMPT {
|
||||||
|
params = &result.InvocationParams{
|
||||||
|
Trigger: t,
|
||||||
|
Script: script,
|
||||||
|
ContractScriptHash: contractScriptHash,
|
||||||
|
Transaction: tx,
|
||||||
|
NextBlockHeight: ic.Block.Index,
|
||||||
}
|
}
|
||||||
return result.NewInvoke(ic, script, faultException, registerSession, s.config.MaxIteratorResultItems), nil
|
}
|
||||||
|
}
|
||||||
|
return result.NewInvoke(ic, script, faultException, registerSession, s.config.MaxIteratorResultItems, params), nil
|
||||||
}
|
}
|
||||||
|
|
||||||
// registerSession is a callback used to add new iterator session to the sessions list.
|
// registerSession is a callback used to add new iterator session to the sessions list.
|
||||||
// It performs no check whether sessions are enabled.
|
// It performs no check whether sessions are enabled.
|
||||||
func (s *Server) registerSession(sessionID string, iterators []result.ServerIterator, finalize func()) {
|
func (s *Server) registerSession(sessionID string, iterators []result.IteratorIdentifier, params *result.InvocationParams, finalize func()) {
|
||||||
s.sessionsLock.Lock()
|
s.sessionsLock.Lock()
|
||||||
timer := time.AfterFunc(time.Second*time.Duration(s.config.SessionExpirationTime), func() {
|
timer := time.AfterFunc(time.Second*time.Duration(s.config.SessionExpirationTime), func() {
|
||||||
s.sessionsLock.Lock()
|
s.sessionsLock.Lock()
|
||||||
|
|
@ -1986,7 +2010,8 @@ func (s *Server) registerSession(sessionID string, iterators []result.ServerIter
|
||||||
sess.iteratorsLock.Unlock()
|
sess.iteratorsLock.Unlock()
|
||||||
})
|
})
|
||||||
sess := &session{
|
sess := &session{
|
||||||
iterators: iterators,
|
params: params,
|
||||||
|
iteratorIdentifiers: iterators,
|
||||||
finalize: finalize,
|
finalize: finalize,
|
||||||
timer: timer,
|
timer: timer,
|
||||||
}
|
}
|
||||||
|
|
@ -2032,10 +2057,42 @@ func (s *Server) traverseIterator(reqParams request.Params) (interface{}, *respo
|
||||||
var (
|
var (
|
||||||
iIDStr = iID.String()
|
iIDStr = iID.String()
|
||||||
iVals []stackitem.Item
|
iVals []stackitem.Item
|
||||||
|
respErr *response.Error
|
||||||
)
|
)
|
||||||
for _, it := range session.iterators {
|
for i, it := range session.iteratorIdentifiers {
|
||||||
if iIDStr == it.ID {
|
if iIDStr == it.ID {
|
||||||
|
if it.Item != nil { // If Iterator stackitem is there, then use it to retrieve iterator elements.
|
||||||
iVals = iterator.Values(it.Item, count)
|
iVals = iterator.Values(it.Item, count)
|
||||||
|
} else { // Otherwise, use MPT-backed historic call to retrieve and traverse iterator.
|
||||||
|
if len(session.iterators) == 0 {
|
||||||
|
var (
|
||||||
|
b *block.Block
|
||||||
|
ic *interop.Context
|
||||||
|
)
|
||||||
|
b, err = s.getFakeNextBlock(session.params.NextBlockHeight)
|
||||||
|
if err != nil {
|
||||||
|
session.iteratorsLock.Unlock()
|
||||||
|
return nil, response.NewInternalServerError(fmt.Sprintf("unable to prepare block for historic call: %s", err))
|
||||||
|
}
|
||||||
|
ic, respErr = s.prepareInvocationContext(session.params.Trigger, session.params.Script, session.params.ContractScriptHash, session.params.Transaction, b, false)
|
||||||
|
if respErr != nil {
|
||||||
|
session.iteratorsLock.Unlock()
|
||||||
|
return nil, respErr
|
||||||
|
}
|
||||||
|
_ = ic.VM.Run() // No error check because FAULTed invocations could also contain iterator on stack.
|
||||||
|
stack := ic.VM.Estack().ToArray()
|
||||||
|
for _, itID := range session.iteratorIdentifiers {
|
||||||
|
j := itID.StackIndex
|
||||||
|
if (stack[j].Type() != stackitem.InteropT) || !iterator.IsIterator(stack[j]) {
|
||||||
|
session.iteratorsLock.Unlock()
|
||||||
|
return nil, response.NewInternalServerError(fmt.Sprintf("inconsistent historic call result: expected %s, got %s at stack position #%d", stackitem.InteropT, stack[j].Type(), j))
|
||||||
|
}
|
||||||
|
session.iterators = append(session.iterators, stack[j])
|
||||||
|
}
|
||||||
|
session.finalize = ic.Finalize
|
||||||
|
}
|
||||||
|
iVals = iterator.Values(session.iterators[i], count)
|
||||||
|
}
|
||||||
break
|
break
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue