This is technically an API change, but it is not an ABI change, and
it's merely a statement that limits what the library can do.
This is in parallel to notmuch_query_get_database(), which also takes
a const pointer.
The user can already do this manually, of course, but (a) it's nice to
have a convenience function, and (b) exposing this interface means
that someone more clever with a _notmuch_string_map_t than i am can
write a more efficient version if they like, and it will just
accelerate the users of the convenience function.
We've had _notmuch_message_database() internally for a while, and it's
useful. It turns out to be useful on the other side of the library
interface as well (i'll use it later in this series for "notmuch
show"), so we expose it publicly now.
We added several new functions, at least
notmuch_database_get_default_indexopts
notmuch_database_index_file
notmuch_indexopts_destroy
notmuch_indexopts_get_decrypt_policy
notmuch_indexopts_set_decrypt_policy
notmuch_message_count_files
notmuch_message_has_maildir_flag
notmuch_message_reindex
notmuch_message_remove_all_properties_with_prefix
notmuch_thread_get_total_files
Here's the configuration choice for people who want a cleartext index,
but don't want stashed session keys.
Interestingly, this "nostash" decryption policy is actually the same
policy that should be used by "notmuch show" and "notmuch reply",
since they never modify the index or database when they are invoked
with --decrypt.
We take advantage of this parallel to tune the behavior of those
programs so that we're not requesting session keys from GnuPG during
"show" and "reply" that we would then otherwise just throw away.
This new automatic decryption policy should make it possible to
decrypt messages that we have stashed session keys for, without
incurring a call to the user's asymmetric keys.
Future patches in this series will introduce new policies; this merely
readies the way for them.
We also convert --try-decrypt to a keyword argument instead of a boolean.
This allows us to create new properties that will be automatically set
during indexing, and cleared during re-indexing, just by choice of
property name.
This is currently mostly a wrapper around _notmuch_crypto_t that keeps
its internals private and doesn't expose any of the GMime API.
However, non-crypto indexing options might also be added later
(e.g. filters or other transformations).
Subsequent patches will introduce a convention that properties whose
name starts with "index." will be stripped (and possibly re-added)
during re-indexing. This patch lays the groundwork for doing that.
I considered a higher level interface where the caller passes a tag
name rather than a flag character, but the role of the "unread" tag is
particularly confusing with such an interface.
There are at least three places in notmuch that can trigger an
indexing action:
* notmuch new
* notmuch insert
* notmuch reindex
I have plans to add some indexing options (e.g. indexing the cleartext
of encrypted parts, external filters, automated property injection)
that should properly be available in all places where indexing
happens.
I also want those indexing options to be exposed by (and constrained
by) the libnotmuch C API.
This isn't yet an API break because we've never made a release with
notmuch_param_t.
These indexing options are relevant in the listed places (and in the
libnotmuch analogues), but they aren't relevant in the other kinds of
functionality that notmuch offers (e.g. dump/restore, tagging, search,
show, reply).
So i think a generic "param" object isn't well-suited for this case.
In particular:
* a param object sounds like it could contain parameters for some
other (non-indexing) operation. This sounds confusing -- why would
i pass non-indexing parameters to a function that only does
indexing?
* bremner suggests online a generic param object would actually be
passed as a list of param objects, argv-style. In this case (at
least in the obvious argv implementation), the params might be some
sort of generic string. This introduces a problem where the API of
the library doesn't grow as new options are added, which means that
when code outside the library tries to use a feature, it first has
to test for it, and have code to handle it not being available.
The indexopts approach proposed here instead makes it clear at
compile time and at dynamic link time that there is an explicit
dependency on that feature, which allows automated tools to keep
track of what's needed and keeps the actual code simple.
My proposal adds the notmuch_indexopts_t as an opaque struct, so that
we can extend the list of options without causing ABI breakage.
The cost of this proposal appears to be that the "boilerplate" API
increases a little bit, with a generic constructor and destructor
function for the indexopts struct.
More patches will follow that make use of this indexopts approach.
We need a way to pass parameters to the indexing functionality on the
first index, not just on reindexing. The obvious place is in
notmuch_database_add_message. But since modifying the argument list
would break both API and ABI, we needed a new name.
I considered notmuch_database_add_message_with_params(), but the
functionality we're talking about doesn't always add a message. It
tries to index a specific file, possibly adding a message, but
possibly doing other things, like adding terms to an existing message,
or failing to deal with message objects entirely (e.g. because the
file didn't contain a message).
So i chose the function name notmuch_database_index_file.
I confess i'm a little concerned about confusing future notmuch
developers with the new name, since we already have a private
_notmuch_message_index_file function, and the two do rather different
things. But i think the added clarity for people linking against the
future libnotmuch and the capacity for using index parameters makes
this a worthwhile tradeoff. (that said, if anyone has another name
that they strongly prefer, i'd be happy to go with it)
This changeset also adjusts the tests so that we test whether the new,
preferred function returns bad values (since the deprecated function
just calls the new one).
We can keep the deprecated n_d_add_message function around as long as
we like, but at the next place where we're forced to break API or ABI
we can probably choose to drop the name relatively safely.
NOTE: there is probably more cleanup to do in the ruby and go bindings
to complete the deprecation directly. I don't know those languages
well enough to attempt a fix; i don't know how to test them; and i
don't know the culture around those languages about API additions or
deprecations.
Since we're accumulating the index when we add a new file to the
message, the semantics have slightly changed. This tries to align the
documentation with the actual functionality.
This new function asks the database to reindex a given message.
The parameter `indexopts` is currently ignored, but is intended to
provide an extensible API to support e.g. changing the encryption or
filtering status (e.g. whether and how certain non-plaintext parts are
indexed).
This operation is relatively inexpensive, as the needed metadata is
already computed by our lazy metadata fetching. The goal is to support
better UI for messages with multipile files.
The dynamic generation of the linker version script for libnotmuch
exports has grown rather complicated.
Reverse the visibility control by hiding symbols by default using
-fvisibility=hidden, and explicitly exporting symbols in notmuch.h
using #pragma GCC visibility. (We could also use __attribute__
((visibility ("default"))) for each exported function, but the pragma
is more convenient.)
The above is not quite enough alone, as it would "leak" a number of
weak symbols from Xapian and C++ standard library. Combine it with a
small static version script that filters out everything except the
notmuch_* symbols that we explicitly exposed, and the C++ RTTI
typeinfo symbols for exception handling.
Finally, as the symbol hiding test can no longer look at the generated
symbol table, switch the test to parse the functions from notmuch.h.
This function was deprecated in notmuch 0.21. We re-use the name for
a status returning version, and deprecate the _st name. One or two
remaining uses of the (removed) non-status returning version fixed at
the same time
This function was deprecated in notmuch 0.21. We finally remove the
deprecated API, and rename the status returning version to the simpler
name. The status returning is kept as a deprecated alias.
The todo comment got separated from the status it's related to at
commit 3f32fd8a1c ("Add missing comment for
NOTMUCH_STATUS_READONLY_DATABASE."). Later, commit b65ca8e0ba ("lib:
modify notmuch.h for automatic document generation") moved it, but to
the wrong place. Fix the location.
This should not change the SONAME, and therefore won't change the
dynamic linking behaviour, but it may help some users debug missing
symbols in case their libnotmuch is too old.
Fix bug reported in id:20160606124522.g2y2eazhhrwjsa4h@flatcap.org
Although the C99 standard 6.10 is a little non-obvious on this point,
the docs for e.g. gcc are unambiguous. And indeed in practice with the
extra space, this code fails
#include <stdio.h>
#define foo (x) (x+1)
int main(int argc, char **argv){
printf("%d\n",foo(1));
}
Many of the external links found in the notmuch source can be resolved
using https instead of http. This changeset addresses as many as i
could find, without touching the e-mail corpus or expected outputs
found in tests.
Since xapian provides the ability to restrict the iterator to a given
prefix, we expose this ability to the user. Otherwise we mimic the other
iterator interfances in notmuch (e.g. tags.c).
This is a thin wrapper around the Xapian metadata API. The job of this
layer is to keep the config key value pairs from colliding with other
metadata by transparently prefixing the keys, along with the usual glue
to provide a C interface.
The split of _get_config into two functions is to allow returning of the
return value with different memory ownership semantics.
Some compilers (older than gcc 4.5 and clang 2.9) do support
__attribute__ ((deprecated)) but not
__attribute__ ((deprecated("message"))).
Check if clang version is at least 3.0, or gcc version
is at least 4.5 to define NOTMUCH_DEPRECATED as the
latter variant above. Otherwise define NOTMUCH_DEPRECATED
as the former variant above.
For a bit simpler implementation clang 2.9 is not included
to use the newer variant. It is just one release, and the
older one works fine. Clang 3.0 was released around 2011-11
and gcc 5.1 2015-04-22 (therefore newer macro for gcc 4.5+)
Although I think it's a pretty bad idea to continue using the old API,
this allows both a more gentle transition for clients of the library,
and allows us to break one monolithic change into a series
These functions are all just accessors, and it's pretty clear they don't
modify the query struct. This also fixes one warning I created when I
introduced status.c.
This exposes the committed database revision to library users along
with a UUID that can be used to detect when revision numbers are no
longer comparable (e.g., because the database has been replaced).
- Make lib/notmuch.h the canonical location for the library versioning
information.
- Since the release-check should never fail now, remove it to reduce
complexity.
- Make the version numbers in notmuch.h consistent with the (now
deleted) ones in lib/Makefile.local
The CLI (and bindings) code should really be updated to use the new
status-code-returning versions. Here are some warnings to prod us (and
other clients) to do so.
The difference with FILE_ERROR is that this is for things that are
wrong with the path before looking at the disk.
Add some 3 tests; two broken as a reminder to actually use this new
code.
The compatibility wrapper ensures that clients calling
notmuch_database_open will receive consistent output for now.
The changes to notmuch-{new,search} and test/symbol-test are just to
make the test suite pass.
The use of IGNORE_RESULT is justified by two things. 1) I don't know
what else to do. 2) asprintf guarantees the output string is NULL if
an error occurs, so at least we are not passing garbage back.
The default is actually exact if no checkatleast parameter is
specified. This change makes that explicit, mainly for documentation,
but also to be safe in the unlikely event of a change of default.
[ commit message rewritten by db based on id:87lho0nlkk.fsf@nikula.org
]
This at least allows distinguishing between out of memory and Xapian
exceptions. Adding finer grained status codes would allow different
Xapian exceptions to be preserved.
Adding wrappers allows people to transition gradually to the new API,
at the cost of bloating the library API a bit.
This updates the message abstraction to support ghost messages: it
adds a message flag that distinguishes regular messages from ghost
messages, and an internal function for initializing a newly created
(blank) message as a ghost message.
In Xapian, closing a database implicitly aborts any outstanding
transaction and commits changes. For historical reasons,
notmuch_database_close had grown to almost, but not quite duplicate
this behavior. Before closing the database, it would explicitly (and
unnecessarily) commit it. However, if there was an outstanding
transaction (ie atomic section), commit would throw a Xapian
exception, which notmuch_database_close would unnecessarily print to
stderr, even though notmuch_database_close would ultimately abort the
transaction anyway when it called close.
This patch simplifies notmuch_database_close to explicitly abort any
outstanding transaction and then just call Database::close. This
works for both read-only and read/write databases, takes care of
committing changes, unifies the exception handling path, and codifies
aborting outstanding transactions. This is currently the only way to
abort an atomic section (and may remain so, since it would be
difficult to roll back things we may have cached from rolled-back
modifications).
as stated in thread.cc:115
/* Construct an authors string from matched_authors_array and
* authors_array. The string contains matched authors first, then
* non-matched authors (with the two groups separated by '|'). Within
* each group, authors are listed in date order. */
this is, however, not reflected in the public API documentation in
notmuch.h:970. This patch a paragraph explaining how | separates the
group of authors of messages matching the query and those of messages
that do not, but are still contained in the thread.
Previously, there was no protection against a caller invoking an
operation on an old database version that would effectively corrupt
the database by treating it like a newer version.
According to notmuch.h, any caller that opens the database in
read/write mode is supposed to check if the database needs upgrading
and perform an upgrade if it does. This would protect against this,
but nobody (even the CLI) actually does this.
However, with features, it's easy to protect against incompatible
operations on a fine-grained basis. This lightweight change allows
callers to safely operate on old database versions, while preventing
specific operations that would corrupt the database with an
informative error message.
notmuch_database_close may fail in Xapian ->flush() or ->close(), so
report the status. Similarly for notmuch_database_destroy which calls
close.
This is required for notmuch insert to report error status if message
indexing failed.
Clarify that using the directory after destroying the corresponding
database is not permitted.
This is implicit in the description of notmuch_database_destroy, but
it doesn't hurt to be explicit, and we do express similar "ownership"
relationships at other places in the docs.
This version of the library introduces LIBNOTMUCH_CHECK_VERSION and
the *_VERSION macros. Bumping the version number is also necessary to
make the comment on LIBNOTMUCH_CHECK_VERSION no longer a lie.
This makes it clear that these macros refer to the *library* version,
and not to the notmuch application-level release. Since there are no
consumers of these macros yet, this is now or never.
We have two distinct "library version" numbers: the soname version and
the version macros. We need both for different reasons: the version
macros enable easy compile-time version detection (and conditional
compilation), while the soname version enables runtime version
detection (which includes the version checking done by things like the
Python bindings).
However, currently, these two version numbers are different, which is
unnecessary and can lead to confusion (especially in things like
Debian, which include the soname version in the package name). This
patch makes them the same by bumping the version macros up to agree
with the soname version.
(We should probably keep the version number in just one place so they
can't get out of sync, but that can be done in another patch.)
There have been some plans for making build incompatible changes to
the library API. This is inconvenient, but it is much more so without
a way to easily conditional build against multiple versions of
notmuch.
The macro has been lifted from glib.
This function uses Xapian's Compactor machinery to compact the notmuch
database. The compacted database is built in a temporary directory and
later moved into place while the original uncompacted database is
preserved.
Signed-off-by: Ben Gamari <bgamari.foss@gmail.com>
notmuch_message_get_header started returning some headers straight
from the database in 567bcbc, but this comment explicitly claimed all
headers were read from the message file.
Add NOTMUCH_EXCLUDE_FLAG to notmuch_exclude_t so that it can
cover all four values of search --exclude in the cli.
Previously the way to avoid any message being marked excluded was to
pass in an empty list of excluded tags: since we now have an explicit
option we might as well honour it.
The enum is in a slightly strange order as the existing FALSE/TRUE
options correspond to the new
NOTMUCH_EXCLUDE_FLAG/NOTMUCH_EXCLUDE_TRUE options so this means we do
not need to bump the version number.
Indeed, an example of this is that the cli count and show still use
FALSE/TRUE and still work.
Previously, getting the list of all messages in a thread required
recursively traversing the thread's message hierarchy, which was both
difficult and resulted in messages being out of order. This adds a
public function to retrieve an iterator over all of the messages in a
thread in oldest-first order.
Using the new support from _notmuch_directory_create, this makes
notmuch_database_get_directory a read-only operation that simply
returns the directory object if it exists or NULL otherwise. This
also means that notmuch_database_get_directory can work on read-only
databases.
This change breaks the directory mtime workaround in notmuch-new.c by
fixing the exact issue it was working around. This permits mtime
update races to prevent scans of changed directories, which
non-deterministically breaks a few tests. The next patch fixes this.
Previously, notmuch_database_get_directory had no way to indicate how
it had failed. This changes its prototype to return a status code and
set an out-argument to the retrieved directory, like similar functions
in the library API. This does *not* change its currently broken
behavior of creating directory objects when they don't exist, but it
does document it and paves the way for fixing this. Also, it can now
check for a read-only database and return
NOTMUCH_STATUS_READ_ONLY_DATABASE instead of crashing.
In the interest of atomicity, this also updates calls from the CLI so
that notmuch still compiles.
This is the notmuch_database_create equivalent of the previous change.
In this case, there were places where errors were not being propagated
correctly in notmuch_database_create or in calls to it. These have
been fixed, using the new status value.
It has been a long-standing issue that notmuch_database_open doesn't
return any indication of why it failed. This patch changes its
prototype to return a notmuch_status_t and set an out-argument to the
database itself, like other functions that return both a status and an
object.
In the interest of atomicity, this also updates every use in the CLI
so that notmuch still compiles. Since this patch does not update the
bindings, the Python bindings test fails.
Formerly notmuch_database_close closed the xapian database and
destroyed the talloc structure associated with the notmuch database
object. Split notmuch_database_close into notmuch_database_close and
notmuch_database_destroy.
This makes it possible for long running programs to close the xapian
database and thus release the lock associated with it without
destroying the data structures obtained from it.
This also makes the api more consistent since every other data
structure has a destructor function.
The comments in notmuch.h are a courtesy of Austin Clements.
Signed-off-by: Justus Winter <4winter@informatik.uni-hamburg.de>
Add the NOTMUCH_MESSAGE_FLAG_EXCLUDED flag to
notmuch_query_search_threads. Implemented by inspecting the tags
directly in _notmuch_thread_create/_thread_add_message rather than as
a Xapian query for speed reasons.
Note notmuch_thread_get_matched_messages now returns the number of
non-excluded matching messages. This API is not totally desirable but
fixing it means breaking binary compatibility so we delay that.
Add a flag NOTMUCH_MESSAGE_FLAG_EXCLUDED which is set by
notmuch_query_search_messages for excluded messages. Also add an
option omit_excluded_messages to the search that we do not want the
excludes at all.
This exclude flag will be added to notmuch_query_search threads in the
next patch.
This is useful for tags like "deleted" and "spam" that people
generally want to exclude from query results. These exclusions will
be overridden if a tag is explicitly mentioned in a query.
Add function notmuch_query_count_threads() to get the number of threads
matching a search. This is done by performing a search and figuring out the
number of unique thread IDs in the matching messages, a significantly
heavier operation than notmuch_query_count_messages().
Signed-off-by: Jani Nikula <jani@nikula.org>
