Merge branch 'rel/1.1.0' into develop

GENTOO/pgmon-1.1.0-rc1.ebuild

@@ -0,0 +1,74 @@
+# Copyright 2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{6..13} )
+
+inherit python-r1 systemd
+
+DESCRIPTION="PostgreSQL monitoring bridge"
+HOMEPAGE="None"
+
+LICENSE="BSD"
+SLOT="0"
+KEYWORDS="amd64"
+
+SRC_URI="https://code2.shh-dot-com.org/james/${PN}/releases/download/v${PV}/${P}.tar.bz2"
+
+IUSE="-systemd"
+
+DEPEND="
+	${PYTHON_DEPS}
+	dev-python/psycopg:2
+	dev-python/pyyaml
+	dev-python/requests
+	app-admin/logrotate
+	"
+RDEPEND="${DEPEND}"
+BDEPEND=""
+
+#RESTRICT="fetch"
+
+#S="${WORKDIR}/${PN}"
+
+#pkg_nofetch() {
+#	einfo "Please download"
+#	einfo "  - ${P}.tar.bz2"
+#	einfo "from ${HOMEPAGE} and place it in your DISTDIR directory."
+#	einfo "The file should be owned by portage:portage."
+#}
+
+src_compile() {
+	true
+}
+
+src_install() {
+	# Install init script
+	if ! use systemd ; then
+		newinitd "openrc/pgmon.initd" pgmon
+		newconfd "openrc/pgmon.confd" pgmon
+	fi
+
+	# Install systemd unit
+	if use systemd ; then
+		systemd_dounit "systemd/pgmon.service"
+	fi
+
+	# Install script
+	exeinto /usr/bin
+	newexe "src/pgmon.py" pgmon
+
+	# Install default config
+	diropts -o root -g root -m 0755
+	insinto /etc/pgmon
+	doins "sample-config/pgmon.yml"
+	doins "sample-config/pgmon-metrics.yml"
+
+	# Install logrotate config
+	insinto /etc/logrotate.d
+	newins "logrotate/pgmon.logrotate" pgmon
+
+	# Install man page
+	doman manpages/pgmon.1
+}

Makefile

@@ -9,6 +9,7 @@ FULL_VERSION := $(shell grep -m 1 '^VERSION = ' "$(SCRIPT)" | sed -ne 's/.*"\(.*
 VERSION := $(shell echo $(FULL_VERSION) | sed -n 's/\(.*\)\(-rc.*\|$$\)/\1/p')
 RELEASE := $(shell echo $(FULL_VERSION) | sed -n 's/.*-rc\([0-9]\+\)$$/\1/p')
 
+# Package version formatting
 ifeq ($(RELEASE),)
 RPM_RELEASE := 1
 RPM_VERSION := $(VERSION)-$(RPM_RELEASE)
@@ -33,55 +34,29 @@ BUILD_DIR := build
 SUPPORTED := ubuntu-20.04 \
              ubuntu-22.04 \
              ubuntu-24.04 \
-	     debian-10 \
 	     debian-11 \
+	     debian-12 \
+	     debian-13 \
 	     rockylinux-8 \
 	     rockylinux-9 \
+	     rockylinux-10 \
 	     oraclelinux-7 \
+	     amazonlinux-2 \
+	     amazonlinux-2023 \
 	     gentoo
 
 ##
 # These targets are the main ones to use for most things.
 ##
 
-.PHONY: all clean tgz lint format test query-tests install-common install-openrc install-systemd
+.PHONY: all clean tgz lint format test query-tests template-coverage
 
 all: package-all
 
+# Dump information related to the current version
 version:
 	@echo "full version=$(FULL_VERSION) version=$(VERSION) rel=$(RELEASE) rpm=$(RPM_VERSION) deb=$(DEB_VERSION)"
 
-# Build all packages
-.PHONY: package-all
-package-all: $(foreach distro_release, $(SUPPORTED), package-$(distro_release))
-
-# Gentoo package (tar.gz) creation
-.PHONY: package-gentoo
-package-gentoo:
-	mkdir -p $(BUILD_DIR)/gentoo
-	tar --transform "s,^,$(PACKAGE_NAME)-$(FULL_VERSION)/," -acjf $(BUILD_DIR)/gentoo/$(PACKAGE_NAME)-$(FULL_VERSION).tar.bz2 --exclude .gitignore $(shell git ls-tree --full-tree --name-only -r HEAD)
-
-
-# Create a deb package
-.PHONY: package-%
-package-%: PARTS=$(subst -, ,$*)
-package-%: DISTRO=$(word 1, $(PARTS))
-package-%: RELEASE=$(word 2, $(PARTS))
-package-%:
-	mkdir -p $(BUILD_DIR)
-	docker run --rm \
-	    -v .:/src:ro \
-	    -v ./$(BUILD_DIR):/output \
-	    --user $(shell id -u):$(shell id -g) \
-	    "$(DISTRO)-packager:$(RELEASE)"
-
-# Create a tarball
-tgz:
-	rm -rf $(BUILD_DIR)/tgz/root
-	mkdir -p $(BUILD_DIR)/tgz/root
-	$(MAKE) install-openrc DESTDIR=$(BUILD_DIR)/tgz/root
-	tar -cz -f $(BUILD_DIR)/tgz/$(PACKAGE_NAME)-$(FULL_VERSION).tgz -C $(BUILD_DIR)/tgz/root .
-
 # Clean up the build directory
 clean:
 	rm -rf $(BUILD_DIR)
@@ -98,7 +73,7 @@ format:
 	$(BLACK) src/pgmon.py
 	$(BLACK) src/test_pgmon.py
 
-# Run unit tests for the script
+# Run unit tests for the script (with coverage if it's available)
 test:
 ifeq ($(HAVE_COVERAGE),yes)
 	cd src ; $(PYTHON) -m coverage run -m unittest && python3 -m coverage report -m
@@ -114,8 +89,22 @@ query-tests:
 template-coverage:
 	$(PYTHON) zabbix_templates/coverage.py sample-config/pgmon-metrics.yml zabbix_templates/pgmon_templates.yaml
 
+# Create a tarball (openrc version)
+tgz:
+	rm -rf $(BUILD_DIR)/tgz/root
+	mkdir -p $(BUILD_DIR)/tgz/root
+	$(MAKE) install-openrc DESTDIR=$(BUILD_DIR)/tgz/root
+	tar -cz -f $(BUILD_DIR)/tgz/$(PACKAGE_NAME)-$(FULL_VERSION).tgz -C $(BUILD_DIR)/tgz/root .
+
+
+##
+# Install targets
+#
+# These are mostly used by the various package building images to actually install the script
+##
 
 # Install the script at the specified base directory (common components)
+.PHONY: install-common
 install-common:
 	# Set up directories
 	mkdir -p $(DESTDIR)/etc/$(PACKAGE_NAME)
@@ -138,6 +127,7 @@ install-common:
 	cp logrotate/${PACKAGE_NAME}.logrotate ${DESTDIR}/etc/logrotate.d/${PACKAGE_NAME}
 
 # Install for systemd
+.PHONY: install-systemd
 install-systemd:
 	# Install the common stuff
 	$(MAKE) install-common
@@ -149,6 +139,7 @@ install-systemd:
 	cp systemd/* $(DESTDIR)/lib/systemd/system/
 
 # Install for open-rc
+.PHONY: install-openrc
 install-openrc:
 	# Install the common stuff
 	$(MAKE) install-common
@@ -165,10 +156,46 @@ install-openrc:
 	cp openrc/pgmon.confd $(DESTDIR)/etc/conf.d/pgmon
 
 
-# Run all of the install tests
+##
-.PHONY: install-tests debian-%-install-test rockylinux-%-install-test ubuntu-%-install-test gentoo-install-test
+# Packaging targets
-install-tests: $(foreach distro_release, $(SUPPORTED), $(distro_release)-install-test)
+#
+# These targets create packages for the supported distro versions
+##
 
+# Build all packages
+.PHONY: package-all
+package-all: all-package-images $(foreach distro_release, $(SUPPORTED), package-$(distro_release))
+
+# Gentoo package (tar.bz2) creation
+.PHONY: package-gentoo
+package-gentoo:
+	mkdir -p $(BUILD_DIR)/gentoo
+	tar --transform "s,^,$(PACKAGE_NAME)-$(FULL_VERSION)/," -acjf $(BUILD_DIR)/gentoo/$(PACKAGE_NAME)-$(FULL_VERSION).tar.bz2 --exclude .gitignore $(shell git ls-tree --full-tree --name-only -r HEAD)
+	cp $(BUILD_DIR)/gentoo/$(PACKAGE_NAME)-$(FULL_VERSION).tar.bz2 $(BUILD_DIR)/
+
+# Create a deb/rpm package
+.PHONY: package-%
+package-%: PARTS=$(subst -, ,$*)
+package-%: DISTRO=$(word 1, $(PARTS))
+package-%: RELEASE=$(word 2, $(PARTS))
+package-%:
+	mkdir -p $(BUILD_DIR)
+	docker run --rm \
+	    -v .:/src:ro \
+	    -v ./$(BUILD_DIR):/output \
+	    --user $(shell id -u):$(shell id -g) \
+	    "$(DISTRO)-packager:$(RELEASE)"
+
+
+##
+# Install test targets
+#
+# These targets test installing the package on the supported distro versions
+##
+
+# Run all of the install tests
+.PHONY: install-tests debian-%-install-test rockylinux-%-install-test ubuntu-%-install-test amazonlinux-%-install-test gentoo-install-test
+install-tests: $(foreach distro_release, $(SUPPORTED), $(distro_release)-install-test)
 
 # Run a Debian install test
 debian-%-install-test:
@@ -181,7 +208,7 @@ debian-%-install-test:
 rockylinux-%-install-test:
 	docker run --rm \
 	     -v ./$(BUILD_DIR):/output \
-	     rockylinux:$* \
+	     rockylinux/rockylinux:$* \
 	     bash -c 'dnf makecache && dnf install -y /output/$(PACKAGE_NAME)-$(RPM_VERSION).el$*.noarch.rpm'
 
 # Run an Ubuntu install test
@@ -192,19 +219,30 @@ ubuntu-%-install-test:
 	     bash -c 'apt-get update && apt-get install -y /output/$(PACKAGE_NAME)-$(DEB_VERSION)-ubuntu-$*.deb'
 
 # Run an OracleLinux install test (this is for EL7 since CentOS7 images no longer exist)
+oraclelinux-%-install-test: MGR=$(intcmp $*, 7, yum, yum, dnf)
 oraclelinux-%-install-test:
 	docker run --rm \
 	     -v ./$(BUILD_DIR):/output \
-	     oraclelinux:7 \
+	     oraclelinux:$* \
-	     bash -c 'yum makecache && yum install -y /output/$(PACKAGE_NAME)-$(RPM_VERSION).el7.noarch.rpm'
+	     bash -c '$(MGR) makecache && $(MGR) install -y /output/$(PACKAGE_NAME)-$(RPM_VERSION).el7.noarch.rpm'
+
+# Run a Amazon Linux install test
+# Note: AL2 is too old for dnf
+amazonlinux-%-install-test: MGR=$(intcmp $*, 2, yum, yum, dnf)
+amazonlinux-%-install-test:
+	docker run --rm \
+	     -v ./$(BUILD_DIR):/output \
+	     amazonlinux:$* \
+	     bash -c '$(MGR) makecache && $(MGR) install -y /output/$(PACKAGE_NAME)-$(RPM_VERSION).amzn$*.noarch.rpm'
 
 # Run a Gentoo install test
 gentoo-install-test:
 	# May impliment this in the future, but would require additional headaches to set up a repo
-	true
+	echo "This would take a while ... skipping for now"
+
 
 ##
-# Container targets
+# Packaging image targets
 #
 # These targets build the docker images used to create packages
 ##
@@ -213,6 +251,11 @@ gentoo-install-test:
 .PHONY: all-package-images
 all-package-images: $(foreach distro_release, $(SUPPORTED), package-image-$(distro_release))
 
+# Nothing needs to be created to build te tarballs for Gentoo
+.PHONY: package-image-gentoo
+package-image-gentoo:
+	echo "Noting to do"
+
 # Generic target for creating images that actually build the packages
 # The % is expected to be: distro-release
 # The build/.package-image-% target actually does the work and touches a state file to avoid excessive building
@@ -228,11 +271,10 @@ package-image-%:
 # Inside-container targets
 #
 # These targets are used inside containers.  They expect the repo to be mounted
-# at /src and the package manager specific build directory to be mounted at
+# at /src and the build directory to be mounted at /output.
-# /output.
 ##
 
-.PHONY: actually-package-debian-% actually-package-rockylinux-% actually-package-ubuntu-% actually-package-oraclelinux-%
+.PHONY: actually-package-debian-% actually-package-rockylinux-% actually-package-ubuntu-% actually-package-oraclelinux-% actually-package-amazonlinux-%
 
 # Debian package creation
 actually-package-debian-%:
@@ -256,10 +298,36 @@ actually-package-ubuntu-%:
 	dpkg-deb -Zgzip --build /output/ubuntu-$* "/output/$(PACKAGE_NAME)-$(DEB_VERSION)-ubuntu-$*.deb"
 
 # OracleLinux package creation
+# Note: This needs to work inside OEL7, so we can't use intcmp
+actually-package-oraclelinux-7:
+	mkdir -p /output/oraclelinux-7/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
+	sed -e "s/@@VERSION@@/$(VERSION)/g" -e "s/@@RELEASE@@/$(RPM_RELEASE)/g" RPM/$(PACKAGE_NAME)-el7.spec > /output/oraclelinux-7/SPECS/$(PACKAGE_NAME).spec
+	rpmbuild --define '_topdir /output/oraclelinux-7' \
+	         --define 'version $(RPM_VERSION)' \
+	         -bb /output/oraclelinux-7/SPECS/$(PACKAGE_NAME).spec
+	cp /output/oraclelinux-7/RPMS/noarch/$(PACKAGE_NAME)-$(RPM_VERSION).el7.noarch.rpm /output/
 actually-package-oraclelinux-%:
 	mkdir -p /output/oraclelinux-$*/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
-	sed -e "s/@@VERSION@@/$(VERSION)/g" -e "s/@@RELEASE@@/$(RPM_RELEASE)/g" RPM/$(PACKAGE_NAME)-el7.spec > /output/oraclelinux-$*/SPECS/$(PACKAGE_NAME).spec
+	sed -e "s/@@VERSION@@/$(VERSION)/g" -e "s/@@RELEASE@@/$(RPM_RELEASE)/g" RPM/$(PACKAGE_NAME).spec > /output/oraclelinux-$*/SPECS/$(PACKAGE_NAME).spec
 	rpmbuild --define '_topdir /output/oraclelinux-$*' \
 	         --define 'version $(RPM_VERSION)' \
 	         -bb /output/oraclelinux-$*/SPECS/$(PACKAGE_NAME).spec
 	cp /output/oraclelinux-$*/RPMS/noarch/$(PACKAGE_NAME)-$(RPM_VERSION).el$*.noarch.rpm /output/
+
+# Amazon Linux package creation
+# Note: This needs to work inside AL2, so we can't use intcmp
+actually-package-amazonlinux-2:
+	mkdir -p /output/amazonlinux-2/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
+	sed -e "s/@@VERSION@@/$(VERSION)/g" -e "s/@@RELEASE@@/$(RPM_RELEASE)/g" RPM/$(PACKAGE_NAME)-el7.spec > /output/amazonlinux-2/SPECS/$(PACKAGE_NAME).spec
+	rpmbuild --define '_topdir /output/amazonlinux-2' \
+	         --define 'version $(RPM_VERSION)' \
+	         -bb /output/amazonlinux-2/SPECS/$(PACKAGE_NAME).spec
+	cp /output/amazonlinux-2/RPMS/noarch/$(PACKAGE_NAME)-$(RPM_VERSION).amzn2.noarch.rpm /output/
+actually-package-amazonlinux-%:
+	mkdir -p /output/amazonlinux-$*/{BUILD,RPMS,SOURCES,SPECS,SRPMS}
+	sed -e "s/@@VERSION@@/$(VERSION)/g" -e "s/@@RELEASE@@/$(RPM_RELEASE)/g" RPM/$(PACKAGE_NAME).spec > /output/amazonlinux-$*/SPECS/$(PACKAGE_NAME).spec
+	rpmbuild --define '_topdir /output/amazonlinux-$*' \
+	         --define 'version $(RPM_VERSION)' \
+	         -bb /output/amazonlinux-$*/SPECS/$(PACKAGE_NAME).spec
+	cp /output/amazonlinux-$*/RPMS/noarch/$(PACKAGE_NAME)-$(RPM_VERSION).amzn$*.noarch.rpm /output/
+

docker/Dockerfile-amazonlinux

@@ -0,0 +1,22 @@
+# Dockerfile.rpm
+
+ARG DISTRO=amazonlinux
+ARG RELEASE=2023
+
+FROM ${DISTRO}:${RELEASE}
+
+ARG DISTRO
+ARG RELEASE
+
+RUN if [ ${RELEASE} -le 2 ] ; then MGR=yum ; else MGR=dnf ; fi && \
+    ${MGR} install -y \
+    rpm-build \
+    make \
+    && ${MGR} clean all
+
+RUN echo -e "#!/bin/bash\nmake actually-package-${DISTRO}-${RELEASE}" > /init.sh \
+    && chmod 755 /init.sh
+
+WORKDIR /src
+
+CMD ["/bin/bash", "/init.sh"]

docker/Dockerfile-oraclelinux

@@ -8,11 +8,12 @@ FROM ${DISTRO}:${RELEASE}
 ARG DISTRO
 ARG RELEASE
 
-RUN yum install -y \
+RUN if [ ${RELEASE} -le 7 ] ; then MGR=yum ; else MGR=dnf ; fi && \
+    ${MGR} install -y \
     rpm-build \
     make \
-    oracle-epel-release-el7 \
+    oracle-epel-release-el${RELEASE} \
-    && yum clean all
+    && ${MGR} clean all
 
 RUN echo -e "#!/bin/bash\nmake actually-package-${DISTRO}-${RELEASE}" > /init.sh \
     && chmod 755 /init.sh

docker/Dockerfile-rockylinux

@@ -3,7 +3,7 @@
 ARG DISTRO=rockylinux
 ARG RELEASE=9
 
-FROM ${DISTRO}:${RELEASE}
+FROM rockylinux/${DISTRO}:${RELEASE}
 
 ARG DISTRO
 ARG RELEASE

sample-config/pgmon-metrics.yml

@@ -196,12 +196,28 @@ metrics:
     type: set
     query:
       0: >
-        SELECT state,
+        SELECT
-               count(*) AS backend_count,
+          states.state,
-               COALESCE(EXTRACT(EPOCH FROM max(now() - state_change)), 0) AS max_state_time
+          COALESCE(a.backend_count, 0) AS backend_count,
-        FROM pg_stat_activity
+          COALESCE(a.max_state_time, 0) AS max_state_time
-        WHERE datname = %(dbname)s
+        FROM (
-        GROUP BY state
+          SELECT state,
+                 count(*) AS backend_count,
+                 COALESCE(EXTRACT(EPOCH FROM now() - min(state_change)), 0) AS max_state_time
+          FROM pg_stat_activity
+          WHERE datname = %(dbname)s
+          GROUP BY state
+        ) AS a
+        RIGHT JOIN
+          unnest(ARRAY[
+            'active',
+            'idle',
+            'idle in transaction',
+            'idle in transaction (aborted)',
+            'fastpath function call',
+            'disabled'
+          ]) AS states(state)
+        USING (state);
     test_args:
       dbname: postgres
 
@@ -235,7 +251,7 @@ metrics:
   locks:
     type: row
     query:
-      0:
+      0: >
         SELECT COUNT(*) AS total,
                SUM(CASE WHEN granted THEN 1 ELSE 0 END) AS granted
         FROM pg_locks

src/pgmon.py

@@ -37,7 +37,7 @@ from psycopg2.pool import ThreadedConnectionPool
 import requests
 
 
-VERSION = "1.0.4"
+VERSION = "1.1.0-rc1"
 
 
 class Context:

tests/docker-compose.yml

@@ -20,7 +20,7 @@ services:
       POSTGRES_PASSWORD: secret
     healthcheck:
       #test: [ "CMD", "pg_isready", "-U", "postgres" ]
-      test: [ "CMD-SHELL", "pg_controldata /var/lib/postgresql/data/ | grep -q 'in production'" ]
+      test: [ "CMD-SHELL", "pg_controldata $(psql -At -U postgres -c 'show data_directory') | grep -q 'in production'" ]
       interval: 5s
       timeout: 2s
       retries: 40

tests/run-tests.sh

@@ -24,6 +24,7 @@ images["14"]='14-bookworm'
 images["15"]='15-bookworm'
 images["16"]='16-bookworm'
 images["17"]='17-bookworm'
+images["18"]='18-trixie'
 
 declare -A results=()
 

zabbix_templates/pgmon_templates.yaml

@@ -411,7 +411,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "active")].max_state_time'
+                    - '$[?(@.state == "active")].max_state_time.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -429,7 +429,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "active")].backend_count'
+                    - '$[?(@.state == "active")].backend_count.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -448,7 +448,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "disabled")].max_state_time'
+                    - '$[?(@.state == "disabled")].max_state_time.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -466,7 +466,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "disabled")].backend_count'
+                    - '$[?(@.state == "disabled")].backend_count.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -485,7 +485,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "fastpath function call")].max_state_time'
+                    - '$[?(@.state == "fastpath function call")].max_state_time.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -503,7 +503,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "fastpath function call")].backend_count'
+                    - '$[?(@.state == "fastpath function call")].backend_count.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -522,7 +522,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "idle")].max_state_time'
+                    - '$[?(@.state == "idle")].max_state_time.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -540,7 +540,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "idle")].backend_count'
+                    - '$[?(@.state == "idle")].backend_count.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -559,7 +559,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "idle in transaction (aborted)")].max_state_time'
+                    - '$[?(@.state == "idle in transaction (aborted)")].max_state_time.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -577,7 +577,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "idle in transaction (aborted)")].backend_count'
+                    - '$[?(@.state == "idle in transaction (aborted)")].backend_count.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -596,7 +596,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "idle in transaction")].max_state_time'
+                    - '$[?(@.state == "idle in transaction")].max_state_time.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -614,7 +614,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "idle in transaction")].backend_count'
+                    - '$[?(@.state == "idle in transaction")].backend_count.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -633,7 +633,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "starting")].max_state_time'
+                    - '$[?(@.state == "starting")].max_state_time.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags:
@@ -651,7 +651,7 @@ zabbix_export:
               preprocessing:
                 - type: JSONPATH
                   parameters:
-                    - '$[?(@.state == "starting")].backend_count'
+                    - '$[?(@.state == "starting")].backend_count.first()'
               master_item:
                 key: 'pgmon_connection_states[{#DBNAME}]'
               tags: