fix: only apply beaconapi.clientIndex filter when explicitly set#652
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fix: only apply beaconapi.clientIndex filter when explicitly set#652
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ClientIndex was a plain `int` whose zero value (0) caused ReadConfig to collapse `beaconapi.endpoints` down to `endpoints[0]` whenever the field was omitted from the config. Users with multiple beacon endpoints only ever saw the first one on the consensus clients page and in the indexer. Change ClientIndex to `*int` so that only explicit configuration (YAML or env) triggers the single-endpoint selection.
pk910
approved these changes
Apr 23, 2026
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Summary
beaconapi.ClientIndexwas typedint, so its Go zero value (0) always satisfied the>= 0check inutils.ReadConfig, collapsingbeaconapi.endpointsdown toendpoints[0]for users who never setclientIndex. Multi-endpoint setups only ever exposed the first beacon client on/clients/consensusand in the indexer.ClientIndexto*intsonilmeans "unset"; the single-endpoint selection now only runs when the field is explicitly configured (YAML orBEACONAPI_CLIENT_INDEX).Test plan
clientIndex: prior to the fix only1-geth-prysmappeared on/clients/consensus; after the fix both1-geth-prysmand2-geth-prysmare listed and indexed.go build ./...passes.clientIndex: N(selects a single endpoint) andBEACONAPI_CLIENT_INDEXenv var.