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Gate experimental features in DerivationOutput::fromJSON

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This is an entry point for outside data, so we need to check enabled
experimental features here.
This commit is contained in:
John Ericson 2023-04-17 11:22:31 -04:00
parent 64ee02890c
commit aa74c7b0bc
5 changed files with 54 additions and 11 deletions
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5
src/libstore/derivations.cc
View file

@ -989,7 +989,8 @@ nlohmann::json DerivationOutput::toJSON(
DerivationOutput DerivationOutput::fromJSON(
const Store & store, std::string_view drvName, std::string_view outputName,
const nlohmann::json & _json)
const nlohmann::json & _json,
const ExperimentalFeatureSettings & xpSettings)
{
std::set<std::string_view> keys;
auto json = (std::map<std::string, nlohmann::json>) _json;
@ -1028,6 +1029,7 @@ DerivationOutput DerivationOutput::fromJSON(
}
else if (keys == (std::set<std::string_view> { "hashAlgo" })) {
xpSettings.require(Xp::CaDerivations);
auto [method, hashType] = methodAlgo();
return DerivationOutput::CAFloating {
.method = method,
@ -1040,6 +1042,7 @@ DerivationOutput DerivationOutput::fromJSON(
}
else if (keys == (std::set<std::string_view> { "hashAlgo", "impure" })) {
xpSettings.require(Xp::ImpureDerivations);
auto [method, hashType] = methodAlgo();
return DerivationOutput::Impure {
.method = method,

6
src/libstore/derivations.hh
View file

@ -136,11 +136,15 @@ struct DerivationOutput : _DerivationOutputRaw
const Store & store,
std::string_view drvName,
std::string_view outputName) const;
/**
* @param xpSettings Stop-gap to avoid globals during unit tests.
*/
static DerivationOutput fromJSON(
const Store & store,
std::string_view drvName,
std::string_view outputName,
const nlohmann::json & json);
const nlohmann::json & json,
const ExperimentalFeatureSettings & xpSettings = experimentalFeatureSettings);
};
typedef std::map<std::string, DerivationOutput> DerivationOutputs;

42
src/libstore/tests/derivation.cc
View file

@ -1,6 +1,7 @@
#include <nlohmann/json.hpp>
#include <gtest/gtest.h>
#include "experimental-features.hh"
#include "derivations.hh"
#include "tests/libstore.hh"
@ -9,10 +10,32 @@ namespace nix {
class DerivationTest : public LibStoreTest
{
public:
/**
* We set these in tests rather than the regular globals so we don't have
* to worry about race conditions if the tests run concurrently.
*/
ExperimentalFeatureSettings mockXpSettings;
};
#define TEST_JSON(NAME, STR, VAL, DRV_NAME, OUTPUT_NAME) \
TEST_F(DerivationTest, DerivationOutput_ ## NAME ## _to_json) { \
class CaDerivationTest : public DerivationTest
{
void SetUp() override
{
mockXpSettings.set("experimental-features", "ca-derivations");
}
};
class ImpureDerivationTest : public DerivationTest
{
void SetUp() override
{
mockXpSettings.set("experimental-features", "impure-derivations");
}
};
#define TEST_JSON(FIXTURE, NAME, STR, VAL, DRV_NAME, OUTPUT_NAME) \
TEST_F(FIXTURE, DerivationOutput_ ## NAME ## _to_json) { \
using nlohmann::literals::operator "" _json; \
ASSERT_EQ( \
STR ## _json, \
@ -22,7 +45,7 @@ class DerivationTest : public LibStoreTest
OUTPUT_NAME)); \
} \
\
TEST_F(DerivationTest, DerivationOutput_ ## NAME ## _from_json) { \
TEST_F(FIXTURE, DerivationOutput_ ## NAME ## _from_json) { \
using nlohmann::literals::operator "" _json; \
ASSERT_EQ( \
DerivationOutput { VAL }, \
@ -30,10 +53,11 @@ class DerivationTest : public LibStoreTest
*store, \
DRV_NAME, \
OUTPUT_NAME, \
STR ## _json)); \
STR ## _json, \
mockXpSettings)); \
}
TEST_JSON(inputAddressed,
TEST_JSON(DerivationTest, inputAddressed,
R"({
"path": "/nix/store/c015dhfh5l0lp6wxyvdn7bmwhbbr6hr9-drv-name-output-name"
})",
@ -42,7 +66,7 @@ TEST_JSON(inputAddressed,
}),
"drv-name", "output-name")
TEST_JSON(caFixed,
TEST_JSON(DerivationTest, caFixed,
R"({
"hashAlgo": "r:sha256",
"hash": "894517c9163c896ec31a2adbd33c0681fd5f45b2c0ef08a64c92a03fb97f390f",
@ -56,7 +80,7 @@ TEST_JSON(caFixed,
}),
"drv-name", "output-name")
TEST_JSON(caFloating,
TEST_JSON(CaDerivationTest, caFloating,
R"({
"hashAlgo": "r:sha256"
})",
@ -66,12 +90,12 @@ TEST_JSON(caFloating,
}),
"drv-name", "output-name")
TEST_JSON(deferred,
TEST_JSON(DerivationTest, deferred,
R"({ })",
DerivationOutput::Deferred { },
"drv-name", "output-name")
TEST_JSON(impure,
TEST_JSON(ImpureDerivationTest, impure,
R"({
"hashAlgo": "r:sha256",
"impure": true

3
tests/ca/derivation-json.sh
View file

@ -16,6 +16,9 @@ drvPath3=$(nix derivation add --dry-run < $TEST_HOME/foo.json)
# With --dry-run nothing is actually written
[[ ! -e "$drvPath3" ]]
# But the JSON is rejected without the experimental feature
expectStderr 1 nix derivation add < $TEST_HOME/foo.json --experimental-features nix-command | grepQuiet "experimental Nix feature 'ca-derivations' is disabled"
# Without --dry-run it is actually written
drvPath4=$(nix derivation add < $TEST_HOME/foo.json)
[[ "$drvPath4" = "$drvPath3" ]]

9
tests/impure-derivations.sh
View file

@ -10,6 +10,15 @@ clearStore
# Basic test of impure derivations: building one a second time should not use the previous result.
printf 0 > $TEST_ROOT/counter
# `nix derivation add` with impure derivations work
drvPath=$(nix-instantiate ./impure-derivations.nix -A impure)
nix derivation show $drvPath | jq .[] > $TEST_HOME/impure-drv.json
drvPath2=$(nix derivation add < $TEST_HOME/impure-drv.json)
[[ "$drvPath" = "$drvPath2" ]]
# But only with the experimental feature!
expectStderr 1 nix derivation add < $TEST_HOME/impure-drv.json --experimental-features nix-command | grepQuiet "experimental Nix feature 'impure-derivations' is disabled"
nix build --dry-run --json --file ./impure-derivations.nix impure.all
json=$(nix build -L --no-link --json --file ./impure-derivations.nix impure.all)
path1=$(echo $json | jq -r .[].outputs.out)