Sandbox::https://github.com/tronprotocol/java-tron/pull/6668

0xbigapple · 2026-04-09T10:26:37Z

What does this PR do?
This PR centralizes JSON-RPC block tag and block number resolution in JsonRpcApiUtil so block selectors are parsed consistently across the JSON-RPC layer.

It also removes Wallet's reverse dependency on JSON-RPC code, eliminates the -1 means latest sentinel, and simplifies the block range resolution logic in LogFilterWrapper.

Added JsonRpcApiUtil.isBlockTag, parseBlockTag, and parseBlockNumber, and moved block tag constants and related errors, including safe, into JsonRpcApiUtil.
Updated TronJsonRpcImpl to delegate block selector parsing to JsonRpcApiUtil; eth_getBlock* paths now use shared block resolution logic.
Centralized the existing latest-only validation for state-read APIs such as getTrxBalance, getStorageAt, getABIOfSmartContract, and eth_call.
Removed JSON-RPC block parsing helpers from Wallet, replaced the -1 sentinel behavior, and added getHeadBlockNum().
Simplified the branching logic in LogFilterWrapper by making block range handling strategy-based and easier to reason about.
Added tests for block tag parsing and log filter strategy behavior.

Why are these changes required?
Block selector parsing is currently duplicated across Wallet, JsonRpcApiUtil, and TronJsonRpcImpl, with slightly different responsibilities and control flow in each layer.

This creates several problems:

duplicated and inconsistent block tag resolution logic
an undesirable reverse dependency from core Wallet code to the JSON-RPC layer
ambiguous -1 sentinel handling that forces callers to reinterpret results differently
complex block range branching in LogFilterWrapper that is harder to maintain and verify

By centralizing parsing in JsonRpcApiUtil, this PR makes the behavior easier to reason about, reduces coupling, and preserves existing JSON-RPC semantics while removing fragile internal conventions.

This PR has been tested by:

Unit Tests
Manual Testing

Follow up
None.

Extra details

This PR is intended as a refactor and cleanup. All JSON-RPC endpoints return identical results for valid inputs.
Block-number hex parsing in the eth_* block-by-number endpoints now uses BigInteger.longValueExact() instead of longValue(): inputs that overflow Long.MAX_VALUE now return invalid block number instead of being silently truncated to their low 64 bits. Valid block numbers are unaffected.

…ution, also use longValueExact in eth_getProof block number parsing and clarify the getBlockByNumOrTag comment

waynercheung · 2026-04-16T13:23:59Z

[NIT] A few comments in this PR use the Unicode arrow →. This is readable, but I’d prefer plain ASCII -> in source comments/Javadoc for consistency with the rest of the codebase and fewer tooling/font portability issues.

0xbigapple · 2026-04-17T01:46:43Z

[NIT] A few comments in this PR use the Unicode arrow →. This is readable, but I’d prefer plain ASCII -> in source comments/Javadoc for consistency with the rest of the codebase and fewer tooling/font portability issues.

Good catch, fixed.

…use ASCII arrows in comments, also add safe tag coverage in state-read endpoint tests

waynercheung

[NIT] A few minor cleanups that can be done in a follow-up or squash:

LogFilterWrapper.java:27-28 - there is still a double blank line between toBlock and the constructor; this should be a single blank line.
LogFilterWrapperStrategyTest.java:164 - filter is unused in testStrategy4_LatestGreaterThanSmallBlock_Throws; the call can be just createFilter(...) since the exception is expected before assignment.
LogFilterWrapperStrategyTest.java:19-22,126 - comments still use the Unicode arrow → while LogFilterWrapper.java was already switched to ASCII ->; it would be better to align them for consistency.

0xbigapple · 2026-04-22T03:37:37Z

[NIT] A few minor cleanups that can be done in a follow-up or squash:

LogFilterWrapper.java:27-28 - there is still a double blank line between toBlock and the constructor; this should be a single blank line.

LogFilterWrapperStrategyTest.java:164 - filter is unused in testStrategy4_LatestGreaterThanSmallBlock_Throws; the call can be just createFilter(...) since the exception is expected before assignment.

LogFilterWrapperStrategyTest.java:19-22,126 - comments still use the Unicode arrow → while LogFilterWrapper.java was already switched to ASCII ->; it would be better to align them for consistency.

Good catches, all three fixed.

…StrategyTest comments, also collapse double blank line in LogFilterWrapper and drop unused local in testStrategy4_LatestGreaterThanSmallBlock_Throws

…rStrategyTest

waynercheung

LGTM

# Conflicts: # framework/src/test/java/org/tron/core/jsonrpc/JsonrpcServiceTest.java

0xbigapple added 2 commits April 9, 2026 14:46

refactor(jsonrpc): centralize block selector parsing into JsonRpcApiUtil

8f6f59a

fix(jsonrpc): read latest block selectors from getNowBlock

0b375d5

github-actions Bot requested a review from bladehan1 April 9, 2026 10:26

halibobo1205 added this to the GreatVoyage-v4.8.2 milestone Apr 9, 2026

halibobo1205 added the topic:json-rpc label Apr 9, 2026

bladehan1 reviewed Apr 15, 2026

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Comment thread framework/src/main/java/org/tron/core/services/jsonrpc/JsonRpcApiUtil.java Resolved

waynercheung reviewed Apr 15, 2026

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Comment thread framework/src/main/java/org/tron/core/services/jsonrpc/TronJsonRpcImpl.java Resolved

waynercheung reviewed Apr 15, 2026

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Comment thread framework/src/main/java/org/tron/core/services/jsonrpc/TronJsonRpcImpl.java Resolved

refactor(jsonrpc): use getHeadBlockNum for parseBlockTag latest resol…

bdb59dc

…ution, also use longValueExact in eth_getProof block number parsing and clarify the getBlockByNumOrTag comment

waynercheung reviewed Apr 16, 2026

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Comment thread framework/src/main/java/org/tron/core/services/jsonrpc/filters/LogFilterWrapper.java Resolved

alan-eth reviewed Apr 16, 2026

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Comment thread framework/src/test/java/org/tron/core/jsonrpc/JsonrpcServiceTest.java Resolved

Comment thread framework/src/main/java/org/tron/core/services/jsonrpc/TronJsonRpcImpl.java Resolved

refactor(jsonrpc): simplify LogFilterWrapper strategy conditions and …

dcfb2de

…use ASCII arrows in comments, also add safe tag coverage in state-read endpoint tests

halibobo1205 requested review from waynercheung April 21, 2026 09:31

halibobo1205 assigned bladehan1 and waynercheung and unassigned bladehan1 and waynercheung Apr 21, 2026

waynercheung reviewed Apr 21, 2026

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Comment thread framework/src/test/java/org/tron/core/services/jsonrpc/LogFilterWrapperStrategyTest.java Resolved

style(jsonrpc): replace Unicode arrows with ASCII in LogFilterWrapper…

42b5564

…StrategyTest comments, also collapse double blank line in LogFilterWrapper and drop unused local in testStrategy4_LatestGreaterThanSmallBlock_Throws

warku123 reviewed Apr 22, 2026

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Comment thread framework/src/main/java/org/tron/core/services/jsonrpc/TronJsonRpcImpl.java Resolved

tronprotocol deleted a comment from sumisme945 Apr 22, 2026

0xbigapple requested review from 317787106 and waynercheung April 22, 2026 07:55

test(jsonrpc): add interface-level tests for block selector refactor

5a38512

0xbigapple force-pushed the refactor/jsonrpc-block-selector branch from 8e9f5c8 to 5a38512 Compare April 23, 2026 06:35

bladehan1 approved these changes Apr 24, 2026

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waynercheung reviewed Apr 24, 2026

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Comment thread framework/src/test/java/org/tron/core/services/jsonrpc/LogFilterWrapperStrategyTest.java Resolved

style(jsonrpc): drop banner-style strategy headers in LogFilterWrappe…

b5ad44e

…rStrategyTest

317787106 approved these changes Apr 27, 2026

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waynercheung approved these changes Apr 27, 2026

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Merge branch 'develop' into refactor/jsonrpc-block-selector

0004cea

# Conflicts: # framework/src/test/java/org/tron/core/jsonrpc/JsonrpcServiceTest.java

kuny0707 merged commit 314f130 into tronprotocol:develop Apr 30, 2026
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github-actions Bot requested a review from bladehan1 May 26, 2026 05:10

0xbigapple mentioned this pull request Jul 17, 2026

feat(tvm,api,config,ci)Release v4.8.2 0xbigapple/java-tron#16

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refactor(jsonrpc): centralize block selector parsing into JsonRpcApiUtil - #6668

refactor(jsonrpc): centralize block selector parsing into JsonRpcApiUtil#6668
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0xbigapple commented Apr 9, 2026 •

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0xbigapple commented Apr 9, 2026 •

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