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Move some stuff from Settings to a new FetchSettings.

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Starting work on #5638

The exact boundary between `FetchSettings` and `EvalSettings` is not
clear to me, but that's fine. First lets clean out `libstore`, and then
worry about what, if anything, should be the separation between those
two.
This commit is contained in:
John Ericson 2022-03-01 01:29:34 +00:00
parent 1c985428c4
commit ea71da395f
9 changed files with 128 additions and 83 deletions
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3
src/libexpr/flake/config.cc
View file

@ -1,5 +1,6 @@
#include "flake.hh"
#include "globals.hh"
#include "fetch-settings.hh"
#include <nlohmann/json.hpp>
@ -53,7 +54,7 @@ void ConfigFile::apply()
auto trustedList = readTrustedList();
bool trusted = false;
if (nix::settings.acceptFlakeConfig){
if (nix::fetchSettings.acceptFlakeConfig){
trusted = true;
} else if (auto saved = get(get(trustedList, name).value_or(std::map<std::string, bool>()), valueS)) {
trusted = *saved;

9
src/libexpr/flake/flake.cc
View file

@ -6,6 +6,7 @@
#include "store-api.hh"
#include "fetchers.hh"
#include "finally.hh"
#include "fetch-settings.hh"
namespace nix {
@ -315,7 +316,7 @@ LockedFlake lockFlake(
FlakeCache flakeCache;
auto useRegistries = lockFlags.useRegistries.value_or(settings.useRegistries);
auto useRegistries = lockFlags.useRegistries.value_or(fetchSettings.useRegistries);
auto flake = getFlake(state, topRef, useRegistries, flakeCache);
@ -591,7 +592,7 @@ LockedFlake lockFlake(
if (lockFlags.writeLockFile) {
if (auto sourcePath = topRef.input.getSourcePath()) {
if (!newLockFile.isImmutable()) {
if (settings.warnDirty)
if (fetchSettings.warnDirty)
warn("will not write lock file of flake '%s' because it has a mutable input", topRef);
} else {
if (!lockFlags.updateLockFile)
@ -618,7 +619,7 @@ LockedFlake lockFlake(
if (lockFlags.commitLockFile) {
std::string cm;
cm = settings.commitLockFileSummary.get();
cm = fetchSettings.commitLockFileSummary.get();
if (cm == "") {
cm = fmt("%s: %s", relPath, lockFileExists ? "Update" : "Add");
@ -716,7 +717,7 @@ static void prim_getFlake(EvalState & state, const Pos & pos, Value * * args, Va
lockFlake(state, flakeRef,
LockFlags {
.updateLockFile = false,
.useRegistries = !evalSettings.pureEval && settings.useRegistries,
.useRegistries = !evalSettings.pureEval && fetchSettings.useRegistries,
.allowMutable = !evalSettings.pureEval,
}),
v);

13
src/libfetchers/fetch-settings.cc Normal file
View file

@ -0,0 +1,13 @@
#include "fetch-settings.hh"
namespace nix {
FetchSettings::FetchSettings()
{
}
FetchSettings fetchSettings;
static GlobalConfig::Register rFetchSettings(&fetchSettings);
}

93
src/libfetchers/fetch-settings.hh Normal file
View file

@ -0,0 +1,93 @@
#pragma once
#include "types.hh"
#include "config.hh"
#include "util.hh"
#include <map>
#include <limits>
#include <sys/types.h>
namespace nix {
struct FetchSettings : public Config
{
FetchSettings();
Setting<StringMap> accessTokens{this, {}, "access-tokens",
R"(
Access tokens used to access protected GitHub, GitLab, or
other locations requiring token-based authentication.
Access tokens are specified as a string made up of
space-separated `host=token` values. The specific token
used is selected by matching the `host` portion against the
"host" specification of the input. The actual use of the
`token` value is determined by the type of resource being
accessed:
* Github: the token value is the OAUTH-TOKEN string obtained
as the Personal Access Token from the Github server (see
https://docs.github.com/en/developers/apps/authorizing-oath-apps).
* Gitlab: the token value is either the OAuth2 token or the
Personal Access Token (these are different types tokens
for gitlab, see
https://docs.gitlab.com/12.10/ee/api/README.html#authentication).
The `token` value should be `type:tokenstring` where
`type` is either `OAuth2` or `PAT` to indicate which type
of token is being specified.
Example `~/.config/nix/nix.conf`:
```
access-tokens = github.com=23ac...b289 gitlab.mycompany.com=PAT:A123Bp_Cd..EfG gitlab.com=OAuth2:1jklw3jk
```
Example `~/code/flake.nix`:
```nix
input.foo = {
type = "gitlab";
host = "gitlab.mycompany.com";
owner = "mycompany";
repo = "pro";
};
```
This example specifies three tokens, one each for accessing
github.com, gitlab.mycompany.com, and sourceforge.net.
The `input.foo` uses the "gitlab" fetcher, which might
requires specifying the token type along with the token
value.
)"};
Setting<bool> allowDirty{this, true, "allow-dirty",
"Whether to allow dirty Git/Mercurial trees."};
Setting<bool> warnDirty{this, true, "warn-dirty",
"Whether to warn about dirty Git/Mercurial trees."};
Setting<std::string> flakeRegistry{this, "https://github.com/NixOS/flake-registry/raw/master/flake-registry.json", "flake-registry",
"Path or URI of the global flake registry."};
Setting<bool> useRegistries{this, true, "use-registries",
"Whether to use flake registries to resolve flake references."};
Setting<bool> acceptFlakeConfig{this, false, "accept-flake-config",
"Whether to accept nix configuration from a flake without prompting."};
Setting<std::string> commitLockFileSummary{
this, "", "commit-lockfile-summary",
R"(
The commit summary to use when committing changed flake lock files. If
empty, the summary is generated based on the action performed.
)"};
};
// FIXME: don't use a global variable.
extern FetchSettings fetchSettings;
}

6
src/libfetchers/git.cc
View file

@ -6,6 +6,8 @@
#include "url-parts.hh"
#include "pathlocks.hh"
#include "fetch-settings.hh"
#include <sys/time.h>
#include <sys/wait.h>
@ -246,10 +248,10 @@ struct GitInputScheme : InputScheme
/* This is an unclean working tree. So copy all tracked files. */
if (!settings.allowDirty)
if (!fetchSettings.allowDirty)
throw Error("Git tree '%s' is dirty", actualUrl);
if (settings.warnDirty)
if (fetchSettings.warnDirty)
warn("Git tree '%s' is dirty", actualUrl);
auto gitOpts = Strings({ "-C", actualUrl, "ls-files", "-z" });

6
src/libfetchers/github.cc
View file

@ -1,11 +1,13 @@
#include "filetransfer.hh"
#include "cache.hh"
#include "fetchers.hh"
#include "globals.hh"
#include "store-api.hh"
#include "types.hh"
#include "url-parts.hh"
#include "fetchers.hh"
#include "fetch-settings.hh"
#include <optional>
#include <nlohmann/json.hpp>
#include <fstream>
@ -157,7 +159,7 @@ struct GitArchiveInputScheme : InputScheme
std::optional<std::string> getAccessToken(const std::string & host) const
{
auto tokens = settings.accessTokens.get();
auto tokens = fetchSettings.accessTokens.get();
if (auto token = get(tokens, host))
return *token;
return {};

6
src/libfetchers/mercurial.cc
View file

@ -5,6 +5,8 @@
#include "store-api.hh"
#include "url-parts.hh"
#include "fetch-settings.hh"
#include <sys/time.h>
using namespace std::string_literals;
@ -165,10 +167,10 @@ struct MercurialInputScheme : InputScheme
/* This is an unclean working tree. So copy all tracked
files. */
if (!settings.allowDirty)
if (!fetchSettings.allowDirty)
throw Error("Mercurial tree '%s' is unclean", actualUrl);
if (settings.warnDirty)
if (fetchSettings.warnDirty)
warn("Mercurial tree '%s' is unclean", actualUrl);
input.attrs.insert_or_assign("ref", chomp(runHg({ "branch", "-R", actualUrl })));

4
src/libfetchers/registry.cc
View file

@ -5,6 +5,8 @@
#include "store-api.hh"
#include "local-fs-store.hh"
#include "fetch-settings.hh"
#include <nlohmann/json.hpp>
namespace nix::fetchers {
@ -150,7 +152,7 @@ void overrideRegistry(
static std::shared_ptr<Registry> getGlobalRegistry(ref<Store> store)
{
static auto reg = [&]() {
auto path = settings.flakeRegistry.get();
auto path = fetchSettings.flakeRegistry.get();
if (!hasPrefix(path, "/")) {
auto storePath = downloadFile(store, path, "flake-registry.json", false).storePath;

71
src/libstore/globals.hh
View file

@ -880,55 +880,6 @@ public:
are loaded as plugins (non-recursively).
)"};
Setting<StringMap> accessTokens{this, {}, "access-tokens",
R"(
Access tokens used to access protected GitHub, GitLab, or
other locations requiring token-based authentication.
Access tokens are specified as a string made up of
space-separated `host=token` values. The specific token
used is selected by matching the `host` portion against the
"host" specification of the input. The actual use of the
`token` value is determined by the type of resource being
accessed:
* Github: the token value is the OAUTH-TOKEN string obtained
as the Personal Access Token from the Github server (see
https://docs.github.com/en/developers/apps/authorizing-oath-apps).
* Gitlab: the token value is either the OAuth2 token or the
Personal Access Token (these are different types tokens
for gitlab, see
https://docs.gitlab.com/12.10/ee/api/README.html#authentication).
The `token` value should be `type:tokenstring` where
`type` is either `OAuth2` or `PAT` to indicate which type
of token is being specified.
Example `~/.config/nix/nix.conf`:
```
access-tokens = github.com=23ac...b289 gitlab.mycompany.com=PAT:A123Bp_Cd..EfG gitlab.com=OAuth2:1jklw3jk
```
Example `~/code/flake.nix`:
```nix
input.foo = {
type = "gitlab";
host = "gitlab.mycompany.com";
owner = "mycompany";
repo = "pro";
};
```
This example specifies three tokens, one each for accessing
github.com, gitlab.mycompany.com, and sourceforge.net.
The `input.foo` uses the "gitlab" fetcher, which might
requires specifying the token type along with the token
value.
)"};
Setting<std::set<ExperimentalFeature>> experimentalFeatures{this, {}, "experimental-features",
"Experimental Nix features to enable."};
@ -936,18 +887,9 @@ public:
void requireExperimentalFeature(const ExperimentalFeature &);
Setting<bool> allowDirty{this, true, "allow-dirty",
"Whether to allow dirty Git/Mercurial trees."};
Setting<bool> warnDirty{this, true, "warn-dirty",
"Whether to warn about dirty Git/Mercurial trees."};
Setting<size_t> narBufferSize{this, 32 * 1024 * 1024, "nar-buffer-size",
"Maximum size of NARs before spilling them to disk."};
Setting<std::string> flakeRegistry{this, "https://github.com/NixOS/flake-registry/raw/master/flake-registry.json", "flake-registry",
"Path or URI of the global flake registry."};
Setting<bool> allowSymlinkedStore{
this, false, "allow-symlinked-store",
R"(
@ -960,19 +902,6 @@ public:
resolves to a different location from that of the build machine. You
can enable this setting if you are sure you're not going to do that.
)"};
Setting<bool> useRegistries{this, true, "use-registries",
"Whether to use flake registries to resolve flake references."};
Setting<bool> acceptFlakeConfig{this, false, "accept-flake-config",
"Whether to accept nix configuration from a flake without prompting."};
Setting<std::string> commitLockFileSummary{
this, "", "commit-lockfile-summary",
R"(
The commit summary to use when committing changed flake lock files. If
empty, the summary is generated based on the action performed.
)"};
};