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authorKaren Arutyunov <karen@codesynthesis.com>2020-03-18 22:17:49 +0300
committerKaren Arutyunov <karen@codesynthesis.com>2020-03-27 17:28:44 +0300
commit35359f038f571dc46de3d14af72a2bc911fb0a24 (patch)
treede3e89d678e78b9efc4d395274fd7ccc68f4a213 /monitor
parent8ad672cc7211952716ffe1fbf76c179b4f1149e3 (diff)
Implement brep-monitor
Diffstat (limited to 'monitor')
-rw-r--r--monitor/.gitignore2
-rw-r--r--monitor/buildfile45
-rw-r--r--monitor/module.cli16
-rw-r--r--monitor/monitor.cli176
-rw-r--r--monitor/monitor.cxx766
5 files changed, 1005 insertions, 0 deletions
diff --git a/monitor/.gitignore b/monitor/.gitignore
new file mode 100644
index 0000000..21c0e0b
--- /dev/null
+++ b/monitor/.gitignore
@@ -0,0 +1,2 @@
+*-options.?xx
+brep-monitor
diff --git a/monitor/buildfile b/monitor/buildfile
new file mode 100644
index 0000000..dc49a98
--- /dev/null
+++ b/monitor/buildfile
@@ -0,0 +1,45 @@
+# file : monitor/buildfile
+# license : MIT; see accompanying LICENSE file
+
+import libs = libodb%lib{odb}
+import libs += libodb-pgsql%lib{odb-pgsql}
+import libs += libbutl%lib{butl}
+import libs += libbbot%lib{bbot}
+
+include ../libbrep/
+include ../mod/
+
+exe{brep-monitor}: {hxx ixx cxx}{* -*-options} \
+ {hxx ixx cxx}{monitor-options module-options} \
+ ../mod/libue{mod} ../libbrep/lib{brep} $libs
+
+# Build options.
+#
+obj{monitor}: cxx.poptions += -DBREP_COPYRIGHT=\"$copyright\"
+
+# Generated options parser.
+#
+if $cli.configured
+{
+ cli.cxx{monitor-options}: cli{monitor}
+ cli.cxx{module-options}: cli{module}
+
+ cli.options += --std c++11 -I $src_root --include-with-brackets \
+--include-prefix monitor --guard-prefix MONITOR --generate-specifier \
+--cli-namespace brep::cli
+
+ cli.cxx{monitor-options}: cli.options += \
+--page-usage print_ --ansi-color --long-usage
+
+ cli.cxx{module-options}: cli.options += --suppress-usage --generate-parse
+
+ # Include the generated cli files into the distribution and don't remove
+ # them when cleaning in src (so that clean results in a state identical to
+ # distributed).
+ #
+ cli.cxx{*}:
+ {
+ dist = true
+ clean = ($src_root != $out_root)
+ }
+}
diff --git a/monitor/module.cli b/monitor/module.cli
new file mode 100644
index 0000000..c299c5f
--- /dev/null
+++ b/monitor/module.cli
@@ -0,0 +1,16 @@
+// file : monitor/module.cli
+// license : MIT; see accompanying LICENSE file
+
+include <mod/module.cli>;
+
+namespace brep
+{
+ namespace options
+ {
+ // brep web module configuration options we are interested in.
+ //
+ class module: build_task
+ {
+ };
+ }
+}
diff --git a/monitor/monitor.cli b/monitor/monitor.cli
new file mode 100644
index 0000000..33b05f7
--- /dev/null
+++ b/monitor/monitor.cli
@@ -0,0 +1,176 @@
+// file : monitor/monitor.cli
+// license : MIT; see accompanying LICENSE file
+
+include <vector>;
+include <string>;
+include <cstddef>; // size_t
+include <cstdint>; // uint16_t
+
+include <mod/module.cli>; // Reuse CLI support types.
+
+"\section=1"
+"\name=brep-monitor"
+"\summary=monitor brep infrastructure"
+
+namespace brep
+{
+ namespace options
+ {
+ {
+ "<options> <brep-config> <toolchain> <name> <version>",
+
+ "\h|SYNOPSIS|
+
+ \c{\b{brep-monitor --help}\n
+ \b{brep-monitor --version}\n
+ \b{brep-monitor} [<options>] <brep-config> <toolchain> [<toolchain>...]}
+
+ \c{<toolchain> = <name>[\b{/}<version>]}
+
+ \h|DESCRIPTION|
+
+ \cb{brep-monitor} analyzes the \cb{brep} internal state and reports the
+ infrastructure issues printing their descriptions to \cb{stderr}.
+
+ The specified \cb{brep} configuration file (<brep-config>) is used to
+ retrieve information required to access the databases and deduce the
+ expected behavior. Most of this information can be overridden via the
+ command line options.
+
+ Currently, only delayed package builds for the specified toolchains are
+ reported. If toolchain version is omitted then all package builds with
+ this toolchain name are considered.
+
+ \cb{brep-monitor} maintains its own state in the brep \cb{build}
+ database. In particular, it records timestamps of the reported package
+ build delays and optionally omits them from being reported again during
+ the timeout specified with the \cb{--report-timeout} option.
+
+ By default, a brief report is printed. Use the \cb{--full-report}
+ option to obtain the full report (which may be large).
+
+ Note that \cb{brep-monitor} expects the \cb{build} database schema to
+ have already been created using \l{brep-migrate(1)}."
+ }
+
+ class monitor
+ {
+ "\h|OPTIONS|"
+
+ std::size_t --build-timeout
+ {
+ "<seconds>",
+ "Time to wait (in seconds) before considering a package build as
+ delayed. If unspecified, the sum of \cb{brep}'s
+ \cb{build-normal-rebuild-timeout} and \cb{build-result-timeout}
+ configuration option values is used. Note also that an archived
+ package that is unbuilt is always considered delayed."
+ }
+
+ std::size_t --report-timeout
+ {
+ "<seconds>",
+ "Time to wait (in seconds) before repeating a report of a package
+ build delay. By default there is no delay and all reports are
+ repeated."
+ }
+
+ bool --full-report
+ {
+ "Print the list of delayed package builds rather than just their number
+ per build configuration."
+ }
+
+ bool --clean
+ {
+ "Additionally clean the monitor state removing outdated information
+ related to non-existent packages, configurations, etc."
+ }
+
+ // Note that the web service would normally logs in under a different
+ // user (and potentially switch the role afterwords) and so falling back
+ // to brep's user name and password wouldn't make much sense.
+ //
+ std::string --build-db-user|-u
+ {
+ "<user>",
+ "\cb{build} database user name. If unspecified, then operating system
+ (login) name is used."
+ }
+
+ std::string --build-db-password
+ {
+ "<pass>",
+ "\cb{build} database password. If unspecified, then login without
+ password is expected to work."
+ }
+
+ std::string --build-db-name|-n = "brep_package"
+ {
+ "<name>",
+ "\cb{build} database name. If unspecified, then \cb{brep}'s
+ \cb{build-db-name} configuration option value is used."
+ }
+
+ std::string --build-db-host|-h
+ {
+ "<host>",
+ "\cb{build} database host name, address, or socket. If unspecified,
+ then \cb{brep}'s \cb{build-db-host} configuration option value is
+ used."
+ }
+
+ std::uint16_t --build-db-port|-p
+ {
+ "<port>",
+ "\cb{build} database port number. If unspecified, then \cb{brep}'s
+ \cb{build-db-port} configuration option value is used."
+ }
+
+ std::string --pager // String to allow empty value.
+ {
+ "<path>",
+ "The pager program to be used to show long text. Commonly used pager
+ programs are \cb{less} and \cb{more}. You can also specify additional
+ options that should be passed to the pager program with
+ \cb{--pager-option}. If an empty string is specified as the pager
+ program, then no pager will be used. If the pager program is not
+ explicitly specified, then \cb{brep-monitor} will try to use
+ \cb{less}. If it is not available, then no pager will be used."
+ }
+
+ std::vector<std::string> --pager-option
+ {
+ "<opt>",
+ "Additional option to be passed to the pager program. See \cb{--pager}
+ for more information on the pager program. Repeat this option to
+ specify multiple pager options."
+ }
+
+ bool --help {"Print usage information and exit."}
+ bool --version {"Print version and exit."}
+ };
+
+ "\h|EXIT STATUS|
+
+ \dl|
+
+ \li|\cb{0}
+
+ Success.|
+
+ \li|\cb{1}
+
+ Fatal error.|
+
+ \li|\cb{2}
+
+ An instance of \cb{brep-monitor} or some other \cb{brep} utility is
+ already running. Try again.|
+
+ \li|\cb{3}
+
+ Recoverable database error. Try again.||
+ "
+ }
+}
diff --git a/monitor/monitor.cxx b/monitor/monitor.cxx
new file mode 100644
index 0000000..e04c5e1
--- /dev/null
+++ b/monitor/monitor.cxx
@@ -0,0 +1,766 @@
+// file : monitor/monitor.cxx -*- C++ -*-
+// license : MIT; see accompanying LICENSE file
+
+#include <map>
+#include <set>
+#include <chrono>
+#include <iostream>
+#include <algorithm> // find_if()
+
+#include <odb/database.hxx>
+#include <odb/transaction.hxx>
+#include <odb/schema-catalog.hxx>
+
+#include <odb/pgsql/database.hxx>
+
+#include <libbutl/pager.mxx>
+#include <libbutl/utility.mxx> // compare_c_string
+
+#include <libbbot/build-config.hxx>
+
+#include <libbrep/build.hxx>
+#include <libbrep/common.hxx>
+#include <libbrep/build-odb.hxx>
+#include <libbrep/build-package.hxx>
+#include <libbrep/build-package-odb.hxx>
+#include <libbrep/database-lock.hxx>
+
+#include <mod/build-config.hxx>
+
+#include <monitor/module-options.hxx>
+#include <monitor/monitor-options.hxx>
+
+using namespace std;
+using namespace butl;
+using namespace bbot;
+using namespace odb::core;
+
+namespace brep
+{
+ // Operation failed, diagnostics has already been issued.
+ //
+ struct failed {};
+
+ static const char* help_info (
+ " info: run 'brep-monitor --help' for more information");
+
+ static int
+ main (int argc, char* argv[])
+ try
+ {
+ cli::argv_scanner scan (argc, argv);
+ options::monitor ops (scan);
+
+ // Version.
+ //
+ if (ops.version ())
+ {
+ cout << "brep-monitor " << BREP_VERSION_ID << endl
+ << "libbrep " << LIBBREP_VERSION_ID << endl
+ << "libbbot " << LIBBBOT_VERSION_ID << endl
+ << "libbpkg " << LIBBPKG_VERSION_ID << endl
+ << "libbutl " << LIBBUTL_VERSION_ID << endl
+ << "Copyright (c) " << BREP_COPYRIGHT << "." << endl
+ << "This is free software released under the MIT license." << endl;
+
+ return 0;
+ }
+
+ // Help.
+ //
+ if (ops.help ())
+ {
+ pager p ("brep-monitor help",
+ false,
+ ops.pager_specified () ? &ops.pager () : nullptr,
+ &ops.pager_option ());
+
+ print_usage (p.stream ());
+
+ // If the pager failed, assume it has issued some diagnostics.
+ //
+ return p.wait () ? 0 : 1;
+ }
+
+ // Parse the brep module configuration.
+ //
+ options::module mod_ops;
+ {
+ if (!scan.more ())
+ {
+ cerr << "error: brep module configuration file is expected" << endl
+ << help_info << endl;
+ return 1;
+ }
+
+ string f (scan.next ());
+
+ try
+ {
+ cli::argv_file_scanner scan (f, "" /* option */);
+
+ // Parse the brep module options skipping those we don't recognize.
+ //
+ while (scan.more ())
+ {
+ // Parse until an unknown option is encountered.
+ //
+ mod_ops.parse (scan,
+ cli::unknown_mode::stop,
+ cli::unknown_mode::stop);
+
+ // Skip the unknown option, unless we are done.
+ //
+ if (scan.more ())
+ {
+ // Skip the option name.
+ //
+ size_t l (scan.peek_line ());
+ scan.skip ();
+
+ // Skip the option value, if present.
+ //
+ // Note that here we rely on the configuration file having both
+ // the option name and its value on the same line.
+ //
+ if (scan.more () && scan.peek_line () == l)
+ scan.skip ();
+ }
+ }
+ }
+ catch (const cli::file_io_failure& e)
+ {
+ cerr << "error: unable to parse brep module configuration: " << e
+ << endl;
+ return 1;
+ }
+ catch (const cli::exception& e)
+ {
+ cerr << "error: unable to parse brep module configuration file '" << f
+ << "': " << e << endl;
+ return 1;
+ }
+ }
+
+ if (!mod_ops.build_config_specified ())
+ {
+ cerr << "warning: package building functionality is disabled" << endl;
+ return 0;
+ }
+
+ // Parse the toolchains suppressing duplicates.
+ //
+ // Note that specifying a toolchain both with and without version doesn't
+ // make sense, so we fail if that's the case.
+ //
+ vector<pair<string, version>> toolchains;
+
+ if (!scan.more ())
+ {
+ cerr << "error: toolchain is expected" << endl << help_info << endl;
+ return 1;
+ }
+
+ while (scan.more ())
+ {
+ string s (scan.next ());
+
+ string tn;
+ version tv;
+
+ try
+ {
+ size_t p (s.find ('/'));
+
+ if (p == string::npos)
+ tn = move (s);
+ else
+ {
+ tn.assign (s, 0, p);
+ tv = version (string (s, p + 1));
+ }
+
+ bool dup (false);
+ for (const pair<string, version>& t: toolchains)
+ {
+ if (tn == t.first)
+ {
+ if (tv == t.second)
+ {
+ dup = true;
+ break;
+ }
+
+ if (tv.empty () != t.second.empty ())
+ {
+ cerr << "error: toolchain '" << tn << "' is specified both "
+ << "with and without version" << endl;
+ return 1;
+ }
+ }
+ }
+
+ if (!dup)
+ toolchains.emplace_back (move (tn), move (tv));
+ }
+ catch (const invalid_argument& e)
+ {
+ cerr << "error: invalid toolchain '" << s << "': " << e << endl;
+ return 1;
+ }
+ }
+
+ // Parse buildtab.
+ //
+ build_configs configs;
+
+ try
+ {
+ configs = parse_buildtab (mod_ops.build_config ());
+ }
+ catch (const tab_parsing& e)
+ {
+ cerr << "error: unable to parse buildtab: " << e << endl;
+ return 1;
+ }
+ catch (const io_error& e)
+ {
+ cerr << "error: unable to read '" << mod_ops.build_config () << "': "
+ << e << endl;
+ return 1;
+ }
+
+ // Create the database instance.
+ //
+ odb::pgsql::database db (
+ ops.build_db_user (),
+ ops.build_db_password (),
+ (ops.build_db_name_specified ()
+ ? ops.build_db_name ()
+ : mod_ops.build_db_name ()),
+ (ops.build_db_host_specified ()
+ ? ops.build_db_host ()
+ : mod_ops.build_db_host ()),
+ (ops.build_db_port_specified ()
+ ? ops.build_db_port ()
+ : mod_ops.build_db_port ()),
+ "options='-c default_transaction_isolation=serializable'");
+
+ // Prevent several brep utility instances from updating the build database
+ // simultaneously.
+ //
+ database_lock l (db);
+
+ // Check that the database schema matches the current one.
+ //
+ const string ds ("build");
+ if (schema_catalog::current_version (db, ds) != db.schema_version (ds))
+ {
+ cerr << "error: build database schema differs from the current one"
+ << endl
+ << " info: use brep-migrate to migrate the database" << endl;
+ return 1;
+ }
+
+ // If requested, cleanup delays for package builds that are not expected
+ // anymore (build configuration is not present, etc).
+ //
+ if (ops.clean ())
+ {
+ using config_map = map<const char*,
+ const build_config*,
+ compare_c_string>;
+
+ config_map conf_map;
+ for (const build_config& c: configs)
+ conf_map[c.name.c_str ()] = &c;
+
+ // Prepare the build delay prepared query.
+ //
+ // Query package build delays in chunks in order not to hold locks for
+ // too long. Sort the result by package version as a first priority to
+ // minimize number of queries to the package database. Note that we
+ // still need to sort by configuration and toolchain to make sure that
+ // build delays are sorted consistently across queries and we don't miss
+ // any of them.
+ //
+ using query = query<build_delay>;
+ using prep_query = prepared_query<build_delay>;
+
+ // Specify the portion.
+ //
+ size_t offset (0);
+
+ query q ("ORDER BY" +
+ query::id.package.tenant + "," +
+ query::id.package.name +
+ order_by_version (query::id.package.version,
+ false /* first */) + "," +
+ query::id.configuration + "," +
+ query::id.toolchain_name +
+ order_by_version (query::id.toolchain_version,
+ false /* first */) +
+ "OFFSET" + query::_ref (offset) + "LIMIT 100");
+
+ connection_ptr conn (db.connection ());
+
+ prep_query pq (
+ conn->prepare_query<build_delay> ("build-delay-query", q));
+
+ // Cache the delayed build package object to reuse it in case the next
+ // delay refers to the same package (which is often the case due to the
+ // query result sorting criteria we use).
+ //
+ package_id pid;
+ shared_ptr<build_package> p;
+
+ for (bool ne (true); ne; )
+ {
+ transaction t (conn->begin ());
+
+ // Query delays.
+ //
+ auto delays (pq.execute ());
+
+ if ((ne = !delays.empty ()))
+ {
+ // Iterate over the build delays and cleanup the outdated ones.
+ //
+ for (const build_delay& d: delays)
+ {
+ config_map::const_iterator ci;
+
+ bool cleanup (
+ // Check that the toolchain is still used.
+ //
+ find_if (toolchains.begin (), toolchains.end (),
+ [&d] (const pair<string, version>& t)
+ {
+ return t.first == d.toolchain_name &&
+ t.second == d.toolchain_version;
+ }) == toolchains.end () ||
+ //
+ // Check that the build configuration is still present.
+ //
+ (ci = conf_map.find (d.configuration.c_str ())) ==
+ conf_map.end ());
+
+ // Check that the package still present, is buildable and doesn't
+ // exclude the build configuration.
+ //
+ if (!cleanup)
+ {
+ if (d.id.package != pid)
+ {
+ pid = d.id.package;
+ p = db.find<build_package> (pid);
+ }
+
+ cleanup = (p == nullptr ||
+ !p->buildable ||
+ exclude (p->builds,
+ p->constraints,
+ *ci->second,
+ configs.class_inheritance_map));
+ }
+
+ if (cleanup)
+ db.erase (d);
+ else
+ ++offset;
+ }
+ }
+
+ t.commit ();
+ }
+ }
+
+ // Collect and report delays as separate steps not to hold database locks
+ // while printing to stderr. Also we need to properly order delays for
+ // printing.
+ //
+ // Iterate through all possible package builds creating the list of delays
+ // with the following sort priority:
+ //
+ // 1: toolchain name
+ // 2: toolchain version (descending)
+ // 3: configuration name
+ // 4: tenant
+ // 5: package name
+ // 6: package version (descending)
+ //
+ // Such ordering will allow us to group build delays by toolchain and
+ // configuration while printing the report.
+ //
+ struct compare_delay
+ {
+ bool
+ operator() (const shared_ptr<const build_delay>& x,
+ const shared_ptr<const build_delay>& y) const
+ {
+ if (int r = x->toolchain_name.compare (y->toolchain_name))
+ return r < 0;
+
+ if (int r = x->toolchain_version.compare (y->toolchain_version))
+ return r > 0;
+
+ if (int r = x->configuration.compare (y->configuration))
+ return r < 0;
+
+ if (int r = x->tenant.compare (y->tenant))
+ return r < 0;
+
+ if (int r = x->package_name.compare (y->package_name))
+ return r < 0;
+
+ return x->package_version.compare (y->package_version) > 0;
+ }
+ };
+
+ set<shared_ptr<const build_delay>, compare_delay> delays;
+ {
+ connection_ptr conn (db.connection ());
+
+ // Prepare the buildable package prepared query.
+ //
+ // Query buildable packages in chunks in order not to hold locks for
+ // too long.
+ //
+ using pquery = query<buildable_package>;
+ using prep_pquery = prepared_query<buildable_package>;
+
+ // Specify the portion.
+ //
+ size_t offset (0);
+
+ pquery pq ("ORDER BY" +
+ pquery::build_package::id.tenant + "," +
+ pquery::build_package::id.name +
+ order_by_version (pquery::build_package::id.version,
+ false /* first */) +
+ "OFFSET" + pquery::_ref (offset) + "LIMIT 50");
+
+ prep_pquery ppq (
+ conn->prepare_query<buildable_package> ("buildable-package-query",
+ pq));
+
+ // Prepare the package build prepared query.
+ //
+ // This query will only be used for toolchains that have no version
+ // specified on the command line to obtain the latest build across all
+ // toolchain versions.
+ //
+ using bquery = query<package_build>;
+ using prep_bquery = prepared_query<package_build>;
+
+ build_id id;
+ const auto& bid (bquery::build::id);
+
+ bquery bq ((equal<package_build> (bid.package, id.package) &&
+ bid.configuration == bquery::_ref (id.configuration) &&
+ bid.toolchain_name == bquery::_ref (id.toolchain_name)) +
+ "ORDER BY" + bquery::build::timestamp + "DESC" + "LIMIT 1");
+
+ prep_bquery pbq (
+ conn->prepare_query<package_build> ("package-build-query", bq));
+
+ timestamp::duration build_timeout (
+ ops.build_timeout_specified ()
+ ? chrono::seconds (ops.build_timeout ())
+ : chrono::seconds (mod_ops.build_normal_rebuild_timeout () +
+ mod_ops.build_result_timeout ()));
+
+ timestamp now (system_clock::now ());
+
+ timestamp build_expiration (now - build_timeout);
+
+ timestamp report_expiration (
+ now - chrono::seconds (ops.report_timeout ()));
+
+ for (bool ne (true); ne; )
+ {
+ transaction t (conn->begin ());
+
+ // Query buildable packages (and cache the result).
+ //
+ auto bps (ppq.execute ());
+
+ if ((ne = !bps.empty ()))
+ {
+ offset += bps.size ();
+
+ for (auto& bp: bps)
+ {
+ shared_ptr<build_package> p (db.load<build_package> (bp.id));
+
+ for (const build_config& c: configs)
+ {
+ if (exclude (p->builds,
+ p->constraints,
+ c,
+ configs.class_inheritance_map))
+ continue;
+
+ for (const pair<string, version>& t: toolchains)
+ {
+ id = build_id (p->id, c.name, t.first, t.second);
+
+ // If the toolchain version is not specified then search for
+ // the latest build across all toolchain versions and search
+ // for a specific build otherwise.
+ //
+ shared_ptr<build> b;
+
+ if (id.toolchain_version.empty ())
+ {
+ auto pbs (pbq.execute ());
+
+ if (!pbs.empty ())
+ b = move (pbs.begin ()->build);
+ }
+ else
+ b = db.find<build> (id);
+
+ // Note that we consider a build as delayed if it is not
+ // completed in the expected timeframe. So even if the build
+ // task have been issued recently we may still consider the
+ // build as delayed.
+ //
+ timestamp bct (b != nullptr
+ ? b->completion_timestamp
+ : timestamp_nonexistent);
+
+ // Create the delay object to record a timestamp when the
+ // package build could have potentially been started, unless
+ // it already exists.
+ //
+ shared_ptr<build_delay> d (db.find<build_delay> (id));
+
+ if (d == nullptr)
+ {
+ // If the archived package has no build nor build delay
+ // for this configuration, then we assume that the
+ // configuration was added after the package tenant has
+ // been archived and so the package could have never been
+ // built for this configuration. Thus, we don't consider
+ // this build as delayed and so skip it.
+ //
+ if (bp.archived && b == nullptr)
+ continue;
+
+ // Use the build completion or build status change
+ // timestamp, whichever is earlier, as the build delay
+ // tracking starting point and fallback to the current time
+ // if there is no build yet.
+ //
+ timestamp pts (
+ b == nullptr ? now :
+ bct != timestamp_nonexistent && bct < b->timestamp ? bct :
+ b->timestamp);
+
+ d = make_shared<build_delay> (move (id.package.tenant),
+ move (id.package.name),
+ p->version,
+ move (id.configuration),
+ move (id.toolchain_name),
+ t.second,
+ pts);
+ db.persist (d);
+ }
+
+ // Handle package builds differently based on their tenant's
+ // archive status.
+ //
+ // If the package is not archived then consider it as delayed
+ // if it is not (re-)built by the expiration time. Otherwise,
+ // consider it as delayed if it is unbuilt.
+ //
+ bool delayed;
+
+ if (!bp.archived)
+ {
+ timestamp bts (bct != timestamp_nonexistent
+ ? bct
+ : d->package_timestamp);
+
+ delayed = (bts <= build_expiration);
+ }
+ else
+ delayed = (bct == timestamp_nonexistent);
+
+ // If the report timeout is not specified then report the
+ // delay unconditionally. Otherwise, report the active package
+ // build delay if the report timeout is expired and the
+ // archived package build delay if it was never reported. Note
+ // that fixing the building infrastructure won't help building
+ // an archived package, so reporting its build delays
+ // repeatedly is meaningless.
+ //
+ if (delayed &&
+ (!ops.report_timeout_specified () ||
+ (!bp.archived
+ ? d->report_timestamp <= report_expiration
+ : d->report_timestamp == timestamp_nonexistent)))
+ {
+ // Note that we update the delay objects persistent state
+ // later, after we successfully print the report.
+ //
+ d->report_timestamp = now;
+ delays.insert (move (d));
+ }
+ }
+ }
+ }
+ }
+
+ t.commit ();
+ }
+ }
+
+ // Report package build delays, if any.
+ //
+ if (!delays.empty ())
+ try
+ {
+ // Print the report.
+ //
+ cerr.exceptions (ostream::badbit | ostream::failbit);
+
+ cerr << "Package build delays (" << delays.size () << "):" << endl;
+
+ // Group the printed delays by toolchain and configuration.
+ //
+ const string* toolchain_name (nullptr);
+ const version* toolchain_version (nullptr);
+ const string* configuration (nullptr);
+
+ // Print the delayed package build number per configuration rather than
+ // the packages themselves in the brief report mode.
+ //
+ size_t config_build_count (0);
+
+ auto brief_config = [&configuration, &config_build_count] ()
+ {
+ if (configuration != nullptr)
+ {
+ cerr << " " << *configuration << " (" << config_build_count
+ << ")" << endl;
+
+ config_build_count = 0;
+ }
+ };
+
+ for (shared_ptr<const build_delay> d: delays)
+ {
+ // Print the toolchain, if changed.
+ //
+ if (toolchain_name == nullptr ||
+ d->toolchain_name != *toolchain_name ||
+ d->toolchain_version != *toolchain_version)
+ {
+ if (!ops.full_report ())
+ brief_config ();
+
+ if (toolchain_name != nullptr)
+ cerr << endl;
+
+ cerr << " " << d->toolchain_name;
+
+ if (!d->toolchain_version.empty ())
+ cerr << "/" << d->toolchain_version;
+
+ cerr << endl;
+
+ toolchain_name = &d->toolchain_name;
+ toolchain_version = &d->toolchain_version;
+ configuration = nullptr;
+ }
+
+ // Print the configuration, if changed.
+ //
+ if (configuration == nullptr || d->configuration != *configuration)
+ {
+ if (ops.full_report ())
+ {
+ if (configuration != nullptr)
+ cerr << endl;
+
+ cerr << " " << d->configuration << endl;
+ }
+ else
+ brief_config ();
+
+ configuration = &d->configuration;
+ }
+
+ // Print the delayed build package in the full report mode and count
+ // configuration builds otherwise.
+ //
+ if (ops.full_report ())
+ {
+ // We can potentially extend this information with the archived flag
+ // or the delay duration.
+ //
+ cerr << " " << d->package_name << "/" << d->package_version;
+
+ if (!d->tenant.empty ())
+ cerr << " " << d->tenant;
+
+ cerr << endl;
+ }
+ else
+ ++config_build_count;
+ }
+
+ if (!ops.full_report ())
+ brief_config ();
+
+ // Persist the delay report timestamps.
+ //
+ transaction t (db.begin ());
+
+ for (shared_ptr<const build_delay> d: delays)
+ db.update (d);
+
+ t.commit ();
+ }
+ catch (const io_error&)
+ {
+ return 1; // Not much we can do on stderr writing failure.
+ }
+
+ return 0;
+ }
+ catch (const database_locked&)
+ {
+ cerr << "brep-monitor or some other brep utility is running" << endl;
+ return 2;
+ }
+ catch (const recoverable& e)
+ {
+ cerr << "recoverable database error: " << e << endl;
+ return 3;
+ }
+ catch (const cli::exception& e)
+ {
+ cerr << "error: " << e << endl << help_info << endl;
+ return 1;
+ }
+ catch (const failed&)
+ {
+ return 1; // Diagnostics has already been issued.
+ }
+ // Fully qualified to avoid ambiguity with odb exception.
+ //
+ catch (const std::exception& e)
+ {
+ cerr << "error: " << e << endl;
+ return 1;
+ }
+}
+
+int
+main (int argc, char* argv[])
+{
+ return brep::main (argc, argv);
+}