Compose

1#!/usr/bin/env bash
2# compose.sh — `rover supergraph compose` against the rendered schema.
3#
4#   compose.sh [workspace-dir]
5#
6# Layer 1 of the validation stack. It proves the schema is a valid Federation
7# subgraph and that every @connect directive parses against the linked connect
8# spec. It proves nothing about what the API returns — that is what the unit,
9# e2e and conformance layers are for (references/testing.md).
10#
11# Exit 127 means "rover is not installed": the layer is `skipped` with that
12# reason in evidence/latest.json, never `pass`. Exit 3 means the user has not
13# accepted the composition plugin's Elastic License v2 (APOLLO_ELV2_LICENSE,
14# see elv2.sh): the layer is `not_run` with that reason, never `pass`.
15set -euo pipefail
16
17WORKSPACE="${1:-.}"
18OUT="$(mktemp -d)"
19trap 'rm -rf "$OUT"' EXIT
20
21# The product binary, and a refusal (exit 78) when it is older than
22# the version these scripts pin — see resolve-bin.sh for the order and why.
23# shellcheck source=SCRIPTDIR/resolve-bin.sh
24. "$(dirname "$0")/resolve-bin.sh"
25
26if ! command -v rover >/dev/null 2>&1; then
27  echo "compose: rover is not installed — https://www.apollographql.com/docs/rover/getting-started" >&2
28  exit 127
29fi
30
31# shellcheck source=SCRIPTDIR/elv2.sh
32. "$(dirname "$0")/elv2.sh"
33elv2_require compose
34
35# `render` substitutes template.yaml test_defaults into a temporary copy and
36# refuses a supergraph.yaml whose federation pin disagrees with workspace.yaml.
37eval "$("$RC" render "$WORKSPACE" --out "$OUT")"
38
39echo "compose: $(rover --version | head -1), federation $FEDERATION_VERSION, connect $CONNECT_SPEC"
40
41# The composition plugin is ELv2-gated; rover reads the user's own
42# APOLLO_ELV2_LICENSE=accept (checked above), so no prompt and no flag.
43if NO_COLOR=1 rover supergraph compose --config "$COMPOSE_CONFIG" > "$OUT/supergraph.graphql"; then
44  echo "compose: pass — $(wc -l < "$OUT/supergraph.graphql") lines of supergraph SDL"
45else
46  status=$?
47  echo "compose: FAIL (rover exit $status)" >&2
48  exit "$status"
49fi