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Commit Graph

232 Commits

Author SHA1 Message Date
Cynthia Shang
03b28da1ca Rename control/control module to control/common.
This is more consistent with how other common modules are named.

Contributed by Cynthia Shang.
2019-07-31 11:35:58 -04:00
David Steele
f8b0676fd6 Allow modules to be included for testing without requiring coverage.
Sometimes it is useful to get at the internals of a module that is not being tested for coverage in order to provide coverage for another module that is being tested.  The include directive allows this.

Update modules that had previously been added to coverage that only need to be included.
2019-07-25 20:15:06 -04:00
David Steele
415542b4a3 Add PostgreSQL query client.
This direct interface to libpq allows simple queries to be run against PostgreSQL and supports timeouts.

Testing is performed using a shim that can use scripted responses to test all aspects of the client code.  The shim will be very useful for testing backup scenarios on complex topologies.

Reviewed by Cynthia Shang.
2019-07-25 14:50:02 -04:00
David Steele
59f135340d The local command for backup is implemented entirely in C.
The local process is now entirely migrated to C.  Since all major I/O operations are performed in the local process, the vast majority of I/O is now performed in C.

Contributed by David Steele, Cynthia Shang.
2019-07-25 14:34:16 -04:00
David Steele
38ba458616 Add IoSink filter.
Discard all data passed to the filter.  Useful for calculating size/checksum on a remote system when no data needs to be returned.

Update ioReadDrain() to automatically use the IoSink filter.
2019-07-18 08:42:42 -04:00
David Steele
9836578520 Remove perl critic and coverage.
No new Perl code is being developed, so these tools are just taking up time and making migrations to newer platforms harder.  There are only a few Perl tests remaining with full coverage so the coverage tool does not warn of loss of coverage in most cases.

Remove both tools and associated libraries.
2019-07-05 16:55:17 -04:00
David Steele
b9b21315ea Updates for openssl 1.1.1.
Some HTTP error tests were failing after the upgrade to openssl 1.1.1, though the rest of the unit and integration tests worked fine.  This seemed to be related to the very small messages used in the error testing, but it pointed to an issue with the code not being fully compliant, made worse by auto-retry being enabled by default.

Disable auto-retry and implement better error handling to bring the code in line with openssl recommendations.

There's no evidence this is a problem in the field, but having all the tests pass seems like a good idea and the new code is certainly more robust.

Coverage will be complete in the next commit when openssl 1.1.1 is introduced.
2019-07-02 22:09:12 -04:00
David Steele
4815752ccc Add Perl interface to C storage layer.
Maintaining the storage layer/drivers in two languages is burdensome.  Since the integration tests require the Perl storage layer/drivers we'll need them even after the core code is migrated to C.  Create an interface layer so the Perl code can be removed and new storage drivers/features introduced without adding Perl equivalents.

The goal is to move the integration tests to C so this interface will eventually be removed.  That being the case, the interface was designed for maximum compatibility to ease the transition.  The result looks a bit hacky but we'll improve it as needed until it can be retired.
2019-06-26 08:24:58 -04:00
Cynthia Shang
b498188f01 Error on db history mismatch when expiring.
Amend commit 434cd832 to error when the db history in archive.info and backup.info do not match.

The Perl code would attempt to reconcile the history by matching on system id and version but we are not planning to migrate that code to C.  It's possible that there are users with mismatches but if so they should have been getting errors from info for the last six months.  It's easy enough to manually fix these files if there are any mismatches in the field.

Contributed by Cynthia Shang.
2019-06-24 11:59:44 -04:00
David Steele
039e515a31 Allow protocol compression when read/writing remote files.
If the file is compressible (i.e. not encrypted or already compressed) it can be marked as such in storageNewRead()/storageNewWrite().  If the file is being read from/written to a remote it will be compressed in transit using gzip.

Simplify filter group handling by having the IoRead/IoWrite objects create the filter group automatically.  This removes the need for a lot of NULL checking and has a negligible effect on performance since a filter group needs to be created eventually unless the source file is missing.

Allow filters to be created using a VariantList so filter parameters can be passed to the remote.
2019-06-24 10:20:47 -04:00
David Steele
434cd83285 The expire command is implemented entirely in C.
This implementation duplicates the functionality of the Perl code but does so with different logic and includes full unit tests.

Along the way at least one bug was fixed, see issue #748.

Contributed by Cynthia Shang.
2019-06-18 15:19:20 -04:00
David Steele
ceafd8e19d Migrate page checksum filter to C.
This filter exactly mimics the behavior of the Perl filter so is a drop-in replacement.

The filter is not integrated yet since it requires the Perl-to-C storage layer interface coming in a future commit.
2019-06-17 07:52:03 -04:00
David Steele
ced42d6511 Add HTTP client cache.
This cache manages multiple http clients and returns one to the caller that is not busy.  It is the responsibility of the caller to indicate when they are done with a client. If returnContent is set then the client will automatically be marked done.

Also add special handing for HEAD requests to recognize that content-length is informational only and no content is expected.
2019-06-11 10:48:22 -04:00
David Steele
20e5b92f36 Add ls command.
Allows listing repo paths/files from the command-line, to be used primarily for testing and debugging.

This command is internal-only so the interface may change at any time without notice.
2019-05-28 10:03:48 -04:00
David Steele
a474ba54c5 Refactoring path support in the storage module.
Not all storage types support paths as a physical thing that must be created/destroyed.  Add a feature to determine which drivers use paths and simplify the driver API as much as possible given that knowledge and by implementing as much path logic as possible in the Storage object.

Remove the ignoreMissing parameter from pathSync() since it is not used and makes little sense.

Create a standard list of error messages for the drivers to use and apply them where the code was modified -- there is plenty of work still to be done here.
2019-05-26 12:41:15 -04:00
David Steele
1bc84c6474 The local command for restore is implemented entirely in C.
This is just the part of restore run by the local helper processes, not the entire command.

Even so, various optimizations in the code (like pipelining and optimizations for zero-length files) should make the restore command faster on object stores.
2019-05-20 17:07:37 -04:00
Cynthia Shang
a839830333 Add most unimplemented functions to the remote storage driver.
Add pathCreate(), pathRemove(), pathSync(), and remove() to the driver.

Contributed by Cynthia Shang.
2019-05-20 16:19:14 -04:00
David Steele
2d2bec842a Improve coverage in perl/exec module. 2019-05-13 13:36:24 -04:00
David Steele
c99c7c458b Add pathExists() to Storage object.
The S3 driver did not get an implementation since S3 has a weak notion of paths, and it is not currently required.
2019-05-09 08:28:58 -04:00
David Steele
cb00030ee3 Remove dead code missed in 1b486847.
This commit removed all Perl references to spool storage but some stuff was left behind.
2019-05-08 18:58:07 -04:00
David Steele
f1eea23121 Add macros for object free functions.
Most of the *Free() functions are pretty generic so add macros to make creating them as easy as possible.

Create a distinction between *Free() functions that the caller uses to free memory and callbacks that free third-party resources.  There are a number of cases where a driver needs to free resources but does not need a normal *Free() because it is handled by the interface.

Add common/object.h for macros that make object maintenance easier.  This pattern can also be used for many more object functions.
2019-05-03 18:52:54 -04:00
David Steele
32ca27a20b Simplify storage object names.
Remove "File" and "Driver" from object names so they are shorter and easier to keep consistent.

Also remove the "driver" directory so storage implementations are visible directly under "storage".
2019-05-03 15:46:15 -04:00
David Steele
8c712d89eb Improve type safety of interfaces and drivers.
The function pointer casting used when creating drivers made changing interfaces difficult and led to slightly divergent driver implementations.  Unit testing caught production-level errors but there were a lot of small issues and the process was harder than it should have been.

Use void pointers instead so that no casts are required.  Introduce the THIS_VOID and THIS() macros to make dealing with void pointers a little safer.

Since we don't want to expose void pointers in header files, driver functions have been removed from the headers and the various driver objects return their interface type.  This cuts down on accessor methods and the vast majority of those functions were not being used.  Move functions that are still required to .intern.h.

Remove the special "C" crypto functions that were used in libc and instead use the standard interface.
2019-05-02 17:52:24 -04:00
David Steele
52b0b81976 Add storageInfoList() to get detailed info about all entries in a path.
The function provides all the file/path/link information required to build a backup manifest.

Also update storageInfo() to provide the same information for a single file.
2019-04-23 19:33:55 -04:00
David Steele
f492f0571b Add *Save() functions to most Info objects.
At the same time change the way that load constructors work (and are named) so that Ini objects do not persist after the constructors complete.

infoArchiveSave() is excluded from this commit since it is just a trivial call to infoPgSave() and won't be required soon.
2019-04-23 17:08:34 -04:00
David Steele
cddb0c05b4 Add iniSave() and iniMove() to Ini object.
iniSave() sorts alphabetically to maintain compatibility with the expect tests, but we plan to change this behavior when the migration is complete.
2019-04-23 13:03:22 -04:00
David Steele
81f652137c Add separate functions to encode/decode each JSON type.
In most cases the JSON type is known so this is more efficient than converting to Variant first, both in terms of memory and time.

Also rename some of the existing functions for consistency.
2019-04-22 18:41:01 -04:00
David Steele
1adcbc5c91 Add unsigned int Variant type.
This is better than using (unsigned int)varUInt64() because bounds checking is performed.
2019-04-19 11:22:43 -04:00
Cynthia Shang
a7281878ac Migrate backupRegExp() to C.
Removed the "anchor" parameter because it was never used in any calls in the Perl code so it was just a dead parameter that always defaulted to true.

Contributed by Cynthia Shang.
2019-04-15 08:29:25 -04:00
David Steele
df12cbb162 Fix C code to recognize host:port format like Perl does.
This was not an intentional feature in Perl, but it works, so it makes sense to implement the same syntax in C.

This is a break from other places where a -port option is explicitly supplied, so it may make sense to support both styles going forward.  This commit does not address that, however.

Reported by Kyle Nevins.
2019-04-10 17:48:34 -04:00
David Steele
1b48684713 The archive-push command is implemented entirely in C.
This new implementation should behave exactly like the old Perl code with the exception of updated log messages.

Remove as much of the Perl code as possible without breaking other commands.
2019-03-29 13:26:33 +00:00
David Steele
abba2bd132 Add strLstMergeAnti() for merge anti-joins.
We deal with some pretty big lists in archive-push so a nested-loop anti-join looked like it would not be efficient enough.

This merge anti-join should do the trick even though both lists must be sorted first.
2019-03-25 20:35:20 +04:00
David Steele
e938a89250 Add WAL info to PostgreSQL interface.
This allows the WAL header to be read for any supported version on PostgreSQL.
2019-03-19 19:44:06 +04:00
David Steele
856a369b86 Add file write to the S3 storage driver.
Now that repositories are writable the storage drivers that don't yet support file writes need to be updated to do so.

Note that the part size for multi-part upload has not been defined as a proper constant.  This will become an option in the near future so it doesn't seem worth creating a constant that we might then forget to remove.
2019-03-17 22:00:54 +04:00
David Steele
8ebc6d6c34 Add file write to the remote storage driver.
Now that repositories are writable the storage drivers that don't yet support file writes need to be updated to do so.
2019-03-16 21:50:19 +04:00
David Steele
2d386cd266 Move WAL path prefix logic into walPath().
This logic is used by both archive-push and archive-get.
2019-03-16 16:14:10 +04:00
David Steele
b2b2cf0511 Fix issues with remote/local command logging options.
Logging was being enable on local/remote processes even if --log-subprocess was not specified, so fix that.

Also, make sure that stderr is enabled at error level as it was on Perl.  This helps expose error information for debugging.

For remotes, suppress log and lock paths since these are not applicable on remote hosts.  These options should be set in the local config if they need to be overridden.
2019-03-16 15:00:02 +04:00
David Steele
982b47c5ec Add CIFS storage driver.
This driver borrows heavily from the Posix driver.

At this point the only difference is that CIFS does not allow explicit directory fsyncs so they need to be suppressed.  At some point the CIFS diver will also omit link support.

With the addition of this driver repository storage is now writable.
2019-03-14 13:28:33 +04:00
David Steele
2ef5ad70a2 Move crypto module to common/crypto.
It makes sense for the crypto code to be in common since it is not pgBackRest-specific.

Also combine the crypto tests into a single module.
2019-03-10 13:27:30 +02:00
David Steele
95597be81e Move compress module to common/compress.
It makes sense for the compression code to be in common since it is not pgBackRest-specific.
2019-03-10 13:11:20 +02:00
David Steele
2f63babe9d Move help/help test module to command/help. 2019-03-10 11:55:01 +02:00
David Steele
d441061168 Create test matrix for mock/all to increase coverage and reduce tests.
The same test configurations are run on all four test VMs, which seems a real waste of resources.

Vary the tests per VM to increase coverage while reducing the total number of tests. Be sure to include each major feature (remote, s3, encryption) in each VM at least once.
2019-03-02 15:01:02 +02:00
David Steele
f7d1d4400f Create test matrix for mock/expire to increase coverage and reduce tests.
The same test configurations are run on all four test VMs, which seems a real waste of resources.

Vary the tests per VM to increase coverage while reducing the total number of tests.
2019-03-01 19:04:26 +02:00
David Steele
91622942c2 Create test matrix for mock/archive-stop to increase coverage and reduce tests.
The same test configurations are run on all four test VMs, which seems a real waste of resources.

Vary the tests per VM to increase coverage while reducing the total number of tests. Be sure to include each major feature (remote, s3, encryption) in each VM at least once.
2019-03-01 17:12:41 +02:00
David Steele
db4b447be8 The archive-get command is implemented entirely in C.
This new implementation should behave exactly like the old Perl code with the exception of a few updated log messages.

Remove as much of the Perl code as possible without breaking other commands.
2019-02-27 23:03:02 +02:00
David Steele
9367cc461c Migrate local command to C.
The C local is only used for C commands in the main process.

Some tweaking of the existing protocolGet() command was required. Originally the idea was to share the function for local and remote requests but the differences (as in Perl) were too great to make that practical.
2019-02-27 22:34:21 +02:00
David Steele
35abd4cd95 Add ProtocolParallel* objects for parallelizing commands.
Allows commands to be easily parallelized if the jobs are broken up into discrete, non-overlapping chunks.
2019-02-27 21:10:52 +02:00
David Steele
35acfae7c2 Add ProtocolCommand object.
This formalizes the creation of protocol commands, which was previously done by creating KeyValue objects manually.
2019-02-27 19:48:30 +02:00
David Steele
3a05359087 Create test matrix for mock/stanza to increase coverage and reduce tests.
The same test configurations are run on all four test VMs, which seems a real waste of resources.

Vary the tests per VM to increase coverage while reducing the total number of tests. Be sure to include each major feature (remote, s3, encryption) in each VM at least once.
2019-02-24 07:42:41 +02:00
David Steele
2f081f3ec7 Rename test modules for consistency.
The conventions for command and info tests have shifted in the C modules, though not even all the C modules got the message.
2019-02-23 18:51:52 +02:00
David Steele
d489eb87f7 Create test matrix for mock/archive to increase coverage and reduce tests.
The same test configurations are run on all four test VMs, which seems a real waste of resources.

Vary the tests per VM to increase coverage while reducing the total number of tests.  Be sure to include each major feature (remote, s3, encryption) in each VM at least once.
2019-02-23 15:59:39 +02:00
David Steele
ae86e6d5b2 Add missing ToLog() coverage to String, List, and PgControl.
Missing coverage is exposed in the next commit which disables test tracing by default.
2019-02-22 11:31:37 +02:00
David Steele
6866ff031a Add exists() to remote storage. 2019-02-20 22:43:02 +02:00
David Steele
da628be8a8 Migrate remote command to C.
Prior to this the Perl remote was used to satisfy C requests. This worked fine but since the remote needed to be migrated to C anyway there was no reason to wait.

Add the ProtocolServer object and tweak ProtocolClient to work with it. It was also necessary to add a mechanism to get option values from the remote so that encryption settings could be read and used in the storage object.

Update the remote storage objects to comply with the protocol changes and add the storage protocol handler.

Ideally this commit would have been broken up into smaller chunks but there are cross-dependencies in the protocol layer and it didn't seem worth the extra effort.
2019-02-19 20:57:38 +02:00
David Steele
db08656537 Rename FUNCTION_DEBUG_* and consolidate ASSERT_* macros for consistency.
Rename FUNCTION_DEBUG_* macros to FUNCTION_LOG_* to more accurately reflect what they do.  Further rename FUNCTION_DEBUG_RESULT* macros to FUNCTION_LOG_RETURN* to make it clearer that they return from the function as well as logging.  Leave FUNCTION_TEST_* macros as they are.

Consolidate the various ASSERT* macros into a single ASSERT macro that is always compiled out of production builds.  It was difficult to figure out when an assert would be checked with all the different types in play.  When ASSERTs are compiled in they will always be checked regardless of the log level -- tying these two concepts together was not a good idea.
2019-01-21 17:41:59 +02:00
David Steele
d245f8eb42 The info command is implemented entirely in C.
The C info code has already been committed but this commit wires it into main.

Also remove the info Perl code and tests since they are no longer called.
2019-01-21 13:51:45 +02:00
David Steele
7355248d6b Add remote storage objects.
This is a partial implementation of remote storage with just enough functionality to get the info command working.  The client is written in C but the server is still in Perl, which limits progress until a C server is written.
2019-01-18 22:04:37 +02:00
David Steele
88201f37a3 Add ProtocolClient object and helper functions.
This is a complete protocol client implementation in C.

Currently there is no C server implementation so the C client is talking to a Perl server.  This won't work very long, though, as the protocol format, even though in JSON, has a lot of language-specific structure.  While it would be possible to maintain compatibility between C and Perl it's probably not worth the effort in the long run.

Just as in Perl there are helper functions to make constructing protocol objects easier.  Currently only repository remotes are supported.
2019-01-18 21:32:51 +02:00
David Steele
9cac403f61 Add Exec object.
Executes a child process and allows the calling process to communicate with it using read/write io.

This object is specially tailored to implement the protocol layer and may or may not be generally applicable to general purpose
execution.
2019-01-18 11:45:40 +02:00
David Steele
06d41b4dc0 Add cfgExecParam() to generate parameters for executing commands.
Parameters for the local/remote commands are based on parameters that are passed to the current command.

Generate parameters for the new command based on the intersection of parameters between the current command and the command to be executed.
2019-01-17 22:29:19 +02:00
David Steele
ecd56105e6 Add IoHandleRead and IoHandleWrite objects.
General i/o objects for reading and writing file descriptors, in particular those that can block.  In other words, these are not generally to be used with file descriptors for actual files, but rather pipes, sockets, etc.
2019-01-17 22:08:31 +02:00
David Steele
1de22cac2b Rename common/io/handle module to common/io/handleWrite.
ioHandleWriteOneStr() will become a helper function for the IoHandleWrite object.
2019-01-06 14:37:39 +02:00
David Steele
26c888873e Merge common/typeVariantListTest module into common/typeVariantTest.
These modules are closely related so it makes sense for them to be merged.
2019-01-01 18:14:43 +02:00
David Steele
07b9176f25 Merge common/typeStringListTest module into common/typeStringTest.
These modules are closely related so it makes sense for them to be merged.
2019-01-01 18:05:13 +02:00
Cynthia Shang
205525b607 Migrate local info command to C.
The info command will only be executed in C if the repository is local, i.e. not located on a remote repository host.  S3 is considered "local" in this case.

This is a direct migration from Perl to integrate as seamlessly with the remaining Perl code as possible. It should not be possible to determine if the C version is running unless debug-level logging is enabled.

Contributed by Cynthia Shang.
2018-12-13 16:22:34 -05:00
Cynthia Shang
e6ef40e8a3 Add infoBackup object to encapsulate the backup.info file.
The infoBackup object is the counterpart to the infoArchive object which encapsulates the archive.info file.

Currently the object is read-only, i.e. it is not possible to create a new or modify an existing backup.info file.

There a number of constants that will also be used in the infoManifest object so go ahead and create a module to contain them so they don't need to be moved later.

Contributed by Cynthia Shang.
2018-12-13 15:46:18 -05:00
Cynthia Shang
2f15a90d18 Add infoArchiveIdHistoryMatch() to the InfoArchive object.
Match a PostgreSQL system identifier and version to a pgBackRest archive id.

Contributed by Cynthia Shang.
2018-12-10 18:45:57 -05:00
Cynthia Shang
80a3e21521 Add strSizeFormat() to String object.
Converts sizes in bytes to a more human-readable form, .e.g. 1KB, 1.1GB.

Contributed by Cynthia Shang.
2018-12-10 16:11:51 -05:00
David Steele
e73416e9e3 Change file ownership only when required.
Previously chown() would be called even when no ownership changes were required.

In most cases changes are not required and it seems better to perform an extra stat() rather than an extra chown().

Also add unit tests for owner() since there weren't any.
2018-12-05 17:56:47 -05:00
David Steele
3e254f4cff Add IoFilter interface to CipherBlock object.
This allows CipherBlock to be used as a filter in an IoFilterGroup.  The C-style functions used by Perl are now deprecated and should not be used for any new code.

Also add functions to convert between cipher names and CipherType.
2018-11-28 12:42:36 -05:00
Cynthia Shang
f4a1751abc Improve JSON to Variant conversion and add Variant to JSON conversion.
Add boolean and one-dimensional list types to jsonToKv().

Add varToJson() and kvToJson() to convert Variants and KeyValues to JSON.

Contributed by Cynthia Shang.
2018-11-23 16:02:33 -05:00
David Steele
256b727a3d Add S3 storage driver.
Only the storageNewRead() and storageList() functions are currently implemented, but this is enough to enable S3 for the archive-get command.
2018-11-21 19:32:49 -05:00
David Steele
72252ed2a1 Add HttpClient object.
A robust HTTP client with pipelining support and automatic retries.

Using a single object to make multiple requests is more efficient because requests are pipelined whenever possible. Requests are automatically retried when the connection has been closed by the server. Any 5xx response is also retried.

Only the HTTPS protocol is currently supported.
2018-11-21 19:11:45 -05:00
David Steele
1dd06a6e46 Add TlsClient object.
A simple, secure TLS client intended to allow access to services that are exposed via HTTPS. We call it TLS instead of SSL because SSL methods are disabled so only TLS connections are allowed.

This object is intended to be used for multiple TLS connections against a service so tlsClientOpen() can be called each time a new connection is needed. By default, an open connection will be reused for pipelining so the user must be prepared to retry their transaction on a read/write error if the server closes the connection before it can be reused. If this behavior is not desirable then tlsClientClose() may be used to ensure that the next call to tlsClientOpen() will create a new TLS session.

Note that tlsClientRead() is non-blocking unless there are *zero* bytes to be read from the session in which case it will raise an error after the defined timeout. In any case the tlsClientRead()/tlsClientWrite()/tlsClientEof() functions should not generally be called directly. Instead use the read/write interfaces available from tlsClientIoRead()/tlsClientIoWrite().
2018-11-21 18:43:25 -05:00
David Steele
bc25db5667 Add interface objects for libxml2.
Add XmlDocument, XmlNode, and XmlNodeList objects as a thin interface layer on libxml2.

This interface is not intended to be comprehensive. Only a few libxml2 capabilities are exposed but more can be added as needed.
2018-11-20 20:40:11 -05:00
David Steele
8f857a975e Add constant macros to String object.
There are many places (and the number is growing) where a zero-terminated string constant must be transformed into a String object to be usable.  This pattern wastes time and memory, especially since the created string is generally used in a read-only fashion.

Define macros to create constant String objects that are initialized at compile time rather than at run time.
2018-11-10 09:37:12 -05:00
David Steele
df200bee2a Add regExpPrefix() to aid in static prefix searches.
The storageList() command accepts a regular expression as a filter.  This works fine for local filesystems where it is relatively cheap to get a complete list of files and filter them in code.  However, for remote filesystems like S3 it can be expensive to fetch a complete list of files only to discard the bulk of them locally.

S3 does not filter on regular expressions but it can accept a static prefix so this function extracts a prefix from a regular expression when possible.

Even a few characters can drastically reduce the amount of data that must be fetched remotely so the function does not try to be too clever.  It requires a ^ anchor and stops scanning when the first special character is found.
2018-11-09 16:50:22 -05:00
David Steele
48d2795f31 Merge crypto/random module into crypto/crypto.
There wasn't enough code to justify a separate module/test and it seems to fit just fine in crypto/crypto.
2018-11-06 20:04:16 -05:00
David Steele
2cb312ef5a Add cryptoError() and update crypto code to use it.
This adds detail to error messages when available and improves code coverage.
2018-11-06 19:16:00 -05:00
David Steele
1f8931f732 Improve single test run performance.
Improve on 7794ab50 by including the build flag files directly into the Makefile as dependencies (even though they are not includes).  This simplifies some of the rsync logic and allows make to do what it does best.

Also split build flag files into test, harness, and build to reduce rebuilds.  Test flags are used to build test.c, harness flags are used to build the rest of the files in the test harness, and build flags are used for the files that are not directly involved in testing.
2018-11-03 16:34:04 -04:00
Cynthia Shang
34c63276cd Automatically enable backup checksum delta when anomalies (e.g. timeline switch) are detected.
There are a number of cases where a checksum delta is more appropriate than the default time-based delta:

* Timeline has switched since the prior backup
* File timestamp is older than recorded in the prior backup
* File size changed but timestamp did not
* File timestamp is in the future compared to the start of the backup
* Online option has changed since the prior backup

A practical example is that checksum delta will be enabled after a failover to standby due to the timeline switch.  In this case, timestamps can't be trusted and our recommendation has been to run a full backup, which can impact the retention schedule and requires manual intervention.

Now, a checksum delta will be performed if the backup type is incr/diff.  This means more CPU will be used during the backup but the backup size will be smaller and the retention schedule will not be impacted.

Contributed by Cynthia Shang.
2018-11-01 11:31:25 -04:00
David Steele
03b9db9aa2 Fix error after log file open failure when processing should continue.
The C code was warning on failure and continuing but the Perl logging code was never updated with the same feature.

Rather than add the feature to Perl, just disable file logging if the log file cannot be opened.  Log files are always opened by C first, so this will eliminate the error in Perl.

Reported by vthriller.
2018-10-25 14:58:25 +01:00
David Steele
db8dce7adc Disable flapping archive/get unit on CentOS 6.
This test has been flapping since 9b9396c7.  It seems to be some kind of timing issue since all integration tests pass and this unit passes on all other VMs.  It only happens on Travis and is not reproducible in any development environment that we have tried.

For now, disable the test since the constant flapping is causing major delays in testing and quite a bit of time has been spent trying to identify the root cause.  We are actively developing these tests and hope the issue will be identified during the course of normal development.

A number of improvements were made to the tests while searching for this issue.  While none of them helped, it makes sense to keep the improvements.
2018-10-02 17:54:43 +01:00
David Steele
e66e68e324 Add cryptoHmacOne() for HMAC support.
There doesn't seem to be any need to implement this as a filter since current use cases (S3 authentication) work on small datasets.

So, use the single function method provided by OpenSSL for simplicity.
2018-09-27 09:20:47 +01:00
David Steele
bcca625062 Add bufHex()to Buffer object.
A general-purpose function for converting buffers to hex strings.
2018-09-26 22:33:48 +01:00
David Steele
d038b9a029 Support configurable WAL segment size.
PostgreSQL 11 introduces configurable WAL segment sizes, from 1MB to 1GB.

There are two areas that needed to be updated to support this: building the archive-get queue and checking that WAL has been archived after a backup.  Both operations require the WAL segment size to properly build a list.

Checking the archive after a backup is still implemented in Perl and has an active database connection, so just get the WAL segment size from the database.

The archive-get command does not have a connection to the database, so get the WAL segment size from pg_control instead.  This requires a deeper inspection of pg_control than has been done in the past, so it seemed best to copy the relevant data structures from each version of PostgreSQL and build a generic interface layer to address them.  While this approach is a bit verbose, it has the advantage of being relatively simple, and can easily be updated for new versions of PostgreSQL.

Since the integration tests generate pg_control files for testing, teach Perl how to generate files with the correct offsets for both 32-bit and 64-bit architectures.
2018-09-25 10:24:42 +01:00
Cynthia Shang
880fbb5e57 Add checksum delta for incremental backups.
Use checksums rather than timestamps to determine if files have changed.  This is useful in cases where the timestamps may not be trustworthy, e.g. when performing an incremental after failing over to a standby.

If checksum delta is enabled then checksums will be used for verification of resumed backups, even if they are full.  Resumes have always used checksums to verify the files in the repository, enabling delta performs checksums on the database files as well.

Note that the user must manually enable this feature in cases were it would be useful or just keep in enabled all the time.  A future commit will address automatically enabling the feature in cases where it seems likely to be useful.

Contributed by Cynthia Shang.
2018-09-19 11:12:45 -04:00
David Steele
03003562d8 Merge all posix storage tests into a single unit.
As we add storage drivers it's important to keep the tests for each completely separate.  Rather than have three tests for each driver, standardize on having a single test unit for each driver.
2018-09-17 11:45:41 -04:00
David Steele
8852622fa2 Fix missing test caused by a misplaced YAML tag. 2018-09-16 15:53:19 -04:00
David Steele
84ab787b1a Merge protocol storage helper into storage helper.
These are separated the same way in the Perl code where the remote storage driver is located in the Protocol module. However, in the C code the intention is to implement the remote storage driver as a regular driver in the storage layer rather than making a special case out of it.

So, merge the storage helpers. This also has the benefit of making the code a bit simpler.

Also separate storageSpool() and storageSpoolWrite() to make it clearer which operations require write access and to maintain consistency with the other storage helper functions.
2018-09-16 14:12:53 -04:00
David Steele
fd14ceb399 Rename posix driver files/functions for consistency.
The posix driver was developed over time and the naming is not very consistent.

Rename the files and functions to work well with other drivers and generally favor longer names since the driver functions are seldom (eventually never) used outside the driver itself.
2018-09-13 18:58:22 -04:00
David Steele
5aa458ffae Simplify debug logging by allowing log functions to return String objects.
Previously, debug log functions had to handle NULLs and truncate output to the available buffer size.  This was verbose for both coding and testing.

Instead, create a function/macro combination that allows log functions to return a simple String object.  The wrapper function takes care of the memory context, handles NULLs, and truncates the log string based on the available buffer size.
2018-09-11 18:32:56 -04:00
David Steele
9b9396c7b7 Migrate local, unencrypted, non-S3 archive-get command to C.
The archive-get command will only be executed in C if the repository is local, unencrypted, and type posix or cifs.  Admittedly a limited use case, but this is just the first step in migrating the archive-get command entirely into C.

This is a direct migration from the Perl code (including messages) to integrate as seamlessly with the remaining Perl code as possible.  It should not be possible to determine if the C version is running unless debug-level logging is enabled.
2018-09-11 15:42:31 -04:00
David Steele
6e9b6fdca9 Migrate control functions to detect stop files to C from Perl.
Basic functions to detect the presence of stanza or all stop files and error when they are present.

The functionality to detect stop files without error was not migrated. This functionality is only used by stanza-delete and will be migrated with that command.
2018-09-07 08:03:05 -07:00
David Steele
5bdaa35fa5 Migrate walIsPartial(), walIsSegment(), and walSegmentFind() from Perl to C.
Also refactor regular expression defines to make them more reusable.
2018-09-07 08:00:18 -07:00
David Steele
9660076093 Add helper for repository storage.
Implement rules for generating paths within the archive part of the repository. Add a helper function, storageRepo(), to create the repository storage based on configuration settings.

The repository storage helper is located in the protocol module because it will support remote file systems in the future, just as the Perl version does.

Also, improve the existing helper functions a bit using string functions that were not available when they were written.
2018-09-07 07:58:08 -07:00
David Steele
960ad73298 Info objects now parse JSON and use specified storage.
Use JSON code now that it is available and remove temporary hacks used to get things working initially.

Use passed storage objects rather than using storageLocal().  All storage objects in C are still local but this won't always be the case.

Also, move Postgres version conversion functions to postgres/info.c since they have no dependency on the info objects and will likely be useful elsewhere.
2018-09-06 10:12:14 -07:00
David Steele
cb4b715533 Add strReplaceChr() to String object. 2018-08-14 16:49:38 -04:00
David Steele
4a176681c3 Add cvtCharToZ() and macro for debugging char params. 2018-08-14 16:18:17 -04:00
David Steele
6643afe9a8 Add gzip compression/decompression filters for C. 2018-08-14 14:56:59 -04:00
David Steele
e3ff6b209d Filters can now produce output that differs from input.
This allows filters such as compression, encryption, etc. to be implemented.
2018-08-14 14:21:53 -04:00
Cynthia Shang
8ab2e72960 Migrate minimum set of code for reading archive.info files from Perl to C.
Contributed by Cynthia Shang.
2018-08-09 08:57:21 -04:00
David Steele
7993f1a966 Add basic C JSON parser. 2018-08-09 08:06:23 -04:00
David Steele
01aea0c067 Implement filters that do not modify the buffer.
Update cryptoHash to use the new interface.
2018-07-24 21:08:27 -04:00
David Steele
58e9f1e50c Refactor the common/log tests to not depend on common/harnessLog.
common/harnessLog was not ideally suited for general testing and made all the tests quite awkward. Instead, move all code used to test the common/log module into the logTest module and repurpose common/harnessLog to do log expect testing for all other tests in a cleaner way.

Add a few exceptions for config testing since the log levels are reset by default in config/parse.
2018-07-20 18:51:42 -04:00
David Steele
0ac176b722 Abstract IO layer out of the storage layer.
This allows the routines to be used for IO objects that do not have a storage representation.

Implement buffer read and write IO objects.
2018-07-19 16:04:20 -04:00
Cynthia Shang
0e6b927a17 Add uint64 variant type and supporting conversion functions.
Contributed by Cynthia Shang.
Reviewed by Stephen Frost.
2018-07-12 15:23:18 -04:00
David Steele
350b30fa49 Move cryptographic hash functions to C using OpenSSL. 2018-06-11 14:52:26 -04:00
David Steele
064ec757e9 Rename cipher module to the more general crypto. 2018-06-11 10:53:16 -04:00
David Steele
a385cb520b Update primary test environment (Vagrant and Docker) to Ubuntu 18.04. 2018-06-06 15:52:28 -04:00
David Steele
52bc073234 Add stack trace macros to all functions.
Low-level functions only include stack trace in test builds while higher-level functions ship with stack trace built-in. Stack traces include all parameters passed to the function but production builds only create the parameter list when the log level is set high enough, i.e. debug or trace depending on the function.
2018-05-18 11:57:32 -04:00
David Steele
0a860e0b60 Full branch coverage for command/help/help, common/error, common/ini, and common/log modules. 2018-05-05 09:38:09 -04:00
David Steele
90aadc6534 Full branch coverage for config module. 2018-05-04 12:49:25 -04:00
David Steele
54dd6f3ed4 Add asynchronous, parallel archive-get.
This feature maintains a queue of WAL segments to help reduce latency when PostgreSQL requests a WAL segment with restore_command.
2018-04-30 17:27:39 -04:00
David Steele
321a28f6b0 Add walSegmentNext() and walSegmentRange(). 2018-04-29 11:47:50 -04:00
David Steele
be02c67503 Add pgControlInfo() to read pg_control and determine the PostgreSQL version. 2018-04-29 11:20:51 -04:00
David Steele
8c6e2bdbc7 Add storageInfo() and track size in read objects. 2018-04-29 11:02:21 -04:00
David Steele
d44848baa0 Add strLstExists(), strLstExistsZ(), strSub(), and strSubN() to String and StringList objects. 2018-04-29 10:32:46 -04:00
David Steele
89d3476e32 Refactor archive common functions in preparation for parallel async archive-get. 2018-04-29 10:16:59 -04:00
Cynthia Shang
721432f6ae Update the archive-push-queue-max, manifest-save-threshold, and buffer-size options to accept values in KB, MB, GB, TB, or PB where the multiplier is a power of 1024.
Contributed by Cynthia Shang.
2018-04-25 15:46:05 -04:00
Cynthia Shang
8eabc52f3b Add strUpper, strLower, strChr, and strTrunc to String object.
Contributed by Cynthia Shang.
2018-04-25 15:16:42 -04:00
David Steele
88a633da17 Divide tests into three types (unit, integration, performance).
Many options that were set per test can instead be inferred from the types, i.e. container, c, expect, and individual.

Also finish renaming Perl unit tests with the -perl suffix.
2018-04-24 09:12:25 -04:00
David Steele
bb8c315cad Storage object improvements.
* Add storageCopy(), storageMove(), and storagePathSync().
* Separate StorageFile object into separate read and write objects.
* Abstract out Posix file read/write objects.
2018-04-23 17:26:27 -04:00
David Steele
18882cb882 Add bufEq and bufCat to Buffer object. 2018-04-23 10:19:45 -04:00
Cynthia Shang
27aa5f756e Add support for additional pgBackRest configuration files.
Configuration files are loaded from the directory specified by the --config-include-path option.

Add --config-path option for overriding the default base path of the --config and --config-include-path option.

Contributed by Cynthia Shang.
2018-04-19 11:09:39 -04:00
David Steele
cf0ec44ede Rename Perl tests so they don't conflict with their C counterparts. 2018-04-17 12:03:03 -04:00
David Steele
f0250dab4b Move async forking and more error handling to C.
The Perl process was exiting directly when called but that interfered with proper locking for the forked async process. Now Perl returns results to the C process which handles all errors, including signals.
2018-04-12 20:42:26 -04:00
David Steele
6fd0c3dcaa Improved lock implementation written in C.
Now only two types of locks can be taken: archive and backup. Most commands use one or the other but the stanza-* commands acquire both locks. This provides better protection than the old command-based locking scheme.
2018-04-11 09:36:12 -04:00
David Steele
4744eb9387 Add storagePathRemove() and use it in the Perl Posix driver.
This implementation should be faster because it does not stat each file.  It simply assumes that most directory entries are files so attempts an unlink() first.  If the entry is reported by error codes to be a directory then it attempts an rmdir().
2018-04-11 08:21:09 -04:00
David Steele
3bcf637aee Move archive-stop and expire tests to the mock module.
These are mock integration tests so they should be grouped with the other mock integration tests.
2018-04-08 12:57:02 -04:00
David Steele
3b661f4ad5 Move help/version integration tests to mock/all.
Help and version are covered by unit tests, so we really just to need to make sure there is output when called from the command line.
2018-04-08 12:16:32 -04:00
David Steele
741acfd779 Move test definitions to test/define.yaml.
The location is better because it is no longer buried in the Perl test libs. Also, the data can be easily accessed from C.
2018-04-08 10:19:24 -04:00