Remove /node/memory endpoint

[Copilot]

The /node/memory endpoint exposed heap size metrics that were primarily useful for monitoring SGX enclave memory budgets. With SGX support removed, this endpoint serves no meaningful purpose — the same information is available via standard OS tooling (/proc, getrusage, etc.).

Core removal

• src/node/rpc/node_frontend.h: Remove endpoint handler and ccf/pal/mem.h include
• src/node/rpc/node_call_types.h: Remove MemoryUsage struct
• src/node/rpc/serialization.h: Remove JSON serialization macros for MemoryUsage::Out
• include/ccf/pal/mem.h: Remove MallocInfo struct and get_mallinfo() (retain safe_memcpy, still used by ring_buffer.h)

OpenAPI schema

• doc/schemas/node_openapi.json: Remove /node/memory path and MemoryUsage__Out component

Tests

• tests/e2e_common_endpoints.py: Remove test_memory() and its invocation
• tests/e2e_suite.py: Remove mem_stats() helper and its usage in test reporting
• tests/infra/runner.py, basicperf.py, piccolo_driver.py: Remove post-run memory metric collection via /node/memory
• tests/historical_query_perf.py: Remove stray c.get("/node/memory") call
• Clean up now-unused import http in runner.py and piccolo_driver.py

Documentation

• doc/build_apps/release_policy.rst: Remove "memory usage" from operator API description
• CHANGELOG.md: Added removal entry under [7.0.0-rc2] → Removed

[Copilot]

Pull request overview

Note

Copilot was unable to run its full agentic suite in this review.

Removes the /node/memory endpoint and its supporting types/serialization, cleaning up OpenAPI, tests, and documentation now that SGX-specific memory monitoring is no longer relevant.

Changes:

• Deleted /node/memory handler, MemoryUsage types, and related JSON/OpenAPI schema.
• Removed e2e/perf test usage and reporting of /node/memory-derived metrics.
• Cleaned up PAL memory helper (get_mallinfo) and updated docs/changelog accordingly.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/infra/runner.py	Removes post-run /node/memory metric collection and related import.
tests/infra/piccolo_driver.py	Removes /node/memory metric collection and related import.
tests/infra/basicperf.py	Removes /node/memory metric collection during perf runs.
tests/historical_query_perf.py	Removes stray /node/memory call.
tests/e2e_suite.py	Drops mem_stats() helper and removes memory field from test reporting.
tests/e2e_common_endpoints.py	Removes test_memory() and its invocation.
src/node/rpc/serialization.h	Removes JSON serialization declarations for MemoryUsage::Out.
src/node/rpc/node_frontend.h	Removes /memory endpoint registration and PAL include.
src/node/rpc/node_call_types.h	Removes MemoryUsage call type and PAL include.
include/ccf/pal/mem.h	Removes MallocInfo and get_mallinfo() implementation (keeps safe_memcpy).
doc/schemas/node_openapi.json	Removes /node/memory path and MemoryUsage__Out schema component.
doc/build_apps/release_policy.rst	Removes “memory usage” reference from operator API description.
CHANGELOG.md	Adds changelog entry noting removal of /node/memory.