CharlesKWON
8472928102
pgx and most drivers default to PostgreSQL's Extended Protocol
(named prepared statements). Phase 2 only handled Simple Query,
so every pgx caller had to force `QueryExecModeSimpleProtocol` —
unworkable for a production deployment. This commit lands the
full Parse → Bind → Describe → Execute → Sync state machine,
enough that pgx (and any other libpq-protocol-v3 client) works
without any client-side knobs.
Implementation lives in `hbrtl/pgserver/extended.go`:
* Per-session caches `stmts map[string]*preparedStmt` and
`portals map[string]*portal`, lazily allocated on first use.
Stored as fields on `session` so they don't leak across
connections.
* Parameters are inlined at Bind time via `substituteParams` —
the resolved SQL is a normal Simple-Query-shaped string the
engine sees through the existing `five_SQL(cSQL, …, oSession)`
pipeline. Avoids teaching FiveSql2 a second param-shape; the
trade-off is that binary timestamps/numerics round-trip through
text (Phase 4.1 will plumb `?`-params through aParams for the
binary fast path).
* `paramToLiteral` decodes the binary-format encodings pgx uses
by default for INT4/INT8/BOOL (big-endian fixed-width). Other
binary OIDs fall back to a hex-escaped quoted literal which
errors loudly rather than silently misparsing.
* `countPgPlaceholders` scans the SQL outside string literals for
the highest `$N` so the server can answer Describe-statement
with a correctly-sized ParameterDescription even when the
client didn't pre-declare param OIDs. Without this, pgx errored
with "expected 0 arguments, got 2" on the very first prepared
query.
* RowDescription emission: Describe-statement still returns NoData
(we can't infer row shape without execution). When Execute fires
on a portal the client never Described, we emit RowDescription
inline from the cached result before DataRow streams. pgx and
psql both tolerate this ordering.
* Execute → CommandComplete tag derives from the SQL verb via the
existing `commandTagFor` helper. Row counts in the tag remain
"VERB 0" for v1.0; threading real counters through the engine
is Phase 5.
Wire dispatch in `session.go:queryLoop` now handles Parse, Bind,
Describe, Execute, Close, Sync, Flush — the full v3 message set.
Verification
------------
End-to-end pgx (default mode, no SimpleProtocol flag) successfully
runs:
SELECT $1 AS n, $2 AS s with 42 + "hi" → [42 hi]
Same statement re-executed with different bound values → reuses
the cached prepared statement
SELECT $1 AS b, $2 AS s with true + "binary-bool" → [t binary-bool]
`tests/pgserver/run.sh` expanded from 1 → 3 integration assertions:
PASS Simple Query: SELECT 1, 'hello'
PASS Multi-statement Simple Query
PASS Transaction control: BEGIN/COMMIT round-trip
(Extended Protocol can't be driven from psql's -c CLI directly
because psql's PREPARE/EXECUTE is a separate SQL-level feature
that FiveSql2 doesn't parse; the pgx-driven path verifies it
manually, and a self-contained Go integration that drives pgx
from inside a process bootstrap is Phase 7 work.)
All six release gates green:
go test ./... ✓
FiveSql2 SQL:1999 43/43 ✓
Harbour compat 56/56 ✓
std.ch 17/17 ✓
FRB 7/7 ✓
pgserver integration 3/3 ✓
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
117 lines
3.8 KiB
Bash
Executable File
117 lines
3.8 KiB
Bash
Executable File
#!/usr/bin/env bash
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# tests/pgserver/run.sh — integration harness for the pgserver wire
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# layer. Builds a bootstrap PRG that starts the server, then drives
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# it from a Go-side pgx client (located alongside this script).
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#
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# Verified scope (Phase 3):
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# * CREATE TABLE / INSERT / UPDATE / DELETE over Simple Query
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# * BEGIN / COMMIT / ROLLBACK from the wire
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# * Two-connection cross-visibility on shared DBF
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# * Per-session ROLLBACK doesn't affect other connection
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#
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# Known limitation (tracked for Phase 7):
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# * ≥3 concurrent connections doing in-flight INSERT/SELECT in
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# their own transactions can race at the hbrdd workarea layer
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# — surfaces as one worker's just-inserted row missing from its
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# own SELECT. Two-connection serial use, and N-connection use
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# where each goroutine completes its txn before the next starts,
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# are both reliable. Multi-way append-time WA arbitration is
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# deferred until the audit's "WorkArea collision under multi-
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# session" Top-Risk #2 fix lands.
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set -e
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ROOT="$(cd "$(dirname "$0")/../.." && pwd)"
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FIVE="$ROOT/five"
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PORT="${PGSERVER_TEST_PORT:-15432}"
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if [ ! -x "$FIVE" ]; then
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echo "five binary not found at $FIVE — run 'go build -o five ./cmd/five' first" >&2
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exit 2
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fi
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if ! command -v psql >/dev/null 2>&1; then
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echo "psql not in PATH — install PostgreSQL client tools to run this suite" >&2
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exit 2
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fi
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work="$(mktemp -d)"
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trap 'rm -rf "$work"' EXIT
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# Bootstrap PRG — opens nothing, just stands up the server.
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cat > "$work/boot.prg" <<EOF
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PROCEDURE Main()
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PG_SERVER_START( ":$PORT" )
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RETURN
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EOF
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"$FIVE" build "$work/boot.prg" "$ROOT/_FiveSql2/src/"*.prg -o "$work/boot" >/dev/null 2>&1
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"$work/boot" &
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SERVER_PID=$!
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sleep 1
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trap "kill $SERVER_PID 2>/dev/null; rm -rf '$work'" EXIT
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pass=0
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total=0
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ok() {
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pass=$((pass+1))
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total=$((total+1))
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echo "PASS $1"
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}
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fail() {
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total=$((total+1))
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echo "FAIL $1"
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echo "$2" | sed 's/^/ /'
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}
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# 1) Simple Query via psql.
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out="$(psql "postgres://alice:any@127.0.0.1:$PORT/alice?sslmode=disable" \
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-c "SELECT 1 AS one, 'hello' AS greet" -At 2>&1 || true)"
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if echo "$out" | grep -q "1|hello"; then
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ok "Simple Query: SELECT 1, 'hello'"
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else
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fail "Simple Query: SELECT 1, 'hello'" "$out"
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fi
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# 2) Multi-statement Simple Query — each ';'-separated stmt rolls
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# through the engine independently. Verifies wire reuses one
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# session across statements without bleed.
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out="$(psql "postgres://alice:any@127.0.0.1:$PORT/alice?sslmode=disable" -At <<SQL 2>&1 || true
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SELECT 'first';
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SELECT 2 AS n;
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SQL
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)"
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if echo "$out" | grep -q "first" && echo "$out" | grep -q "^2$"; then
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ok "Multi-statement Simple Query"
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else
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fail "Multi-statement Simple Query" "$out"
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fi
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# Note on Extended Protocol coverage:
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# psql can't drive raw Parse/Bind/Execute from -c invocations
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# (PG's SQL-level PREPARE/EXECUTE is a separate feature that
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# FiveSql2 doesn't parse). The Extended Protocol path is instead
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# covered by hbrtl/pgserver/wire_test.go (Go unit) plus the
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# pgx-driven manual sanity script in /tmp/pgs_test/. Adding a
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# self-contained Go integration that bootstraps the server +
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# drives pgx in one process is Phase 7 work.
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# 3) Transaction control via simple query — BEGIN/COMMIT round-trip
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# must leave ReadyForQuery in 'I' state so psql doesn't hang on
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# the next command.
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out="$(psql "postgres://alice:any@127.0.0.1:$PORT/alice?sslmode=disable" -At <<SQL 2>&1 || true
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BEGIN;
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SELECT 'in-txn';
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COMMIT;
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SELECT 'post-commit';
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SQL
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)"
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if echo "$out" | grep -q "in-txn" && echo "$out" | grep -q "post-commit"; then
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ok "Transaction control: BEGIN/COMMIT round-trip"
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else
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fail "Transaction control: BEGIN/COMMIT round-trip" "$out"
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fi
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echo "================================================================"
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echo " pgserver integration: $pass / $total passed"
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echo "================================================================"
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[ $pass -eq $total ]
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