[WIP][AGENTRUN-1076] Support building for AIX ppc64

.github/CODEOWNERS

@@ -875,6 +875,14 @@
 /internal/third_party/kubernetes        @DataDog/container-integrations
 /internal/third_party/golang/           @DataDog/container-integrations
 
+# AIX
+/packaging/aix/                         @DataDog/agent-delivery @pgimalac
+/packaging/aix/stages/                  @DataDog/agent-build @pgimalac
+/packaging/aix/build.sh                 @DataDog/agent-build @pgimalac
+/packaging/aix/clean.sh                 @DataDog/agent-build @pgimalac
+/**/*_aix.go                            @DataDog/agent-runtimes @pgimalac
+/**/*_aix_test.go                       @DataDog/agent-runtimes @pgimalac
+
 # Temporary during Bazel migration
 # This needs to go after all other rules that may include BUILD.bazel files, it otherwise gets overridden
 /**/BUILD.bazel                         @DataDog/agent-build

cmd/agent/subcommands/launchgui/open_browser_unix.go

@@ -3,7 +3,7 @@
 // This product includes software developed at Datadog (https://www.datadoghq.com/).
 // Copyright 2016-present Datadog, Inc.
 
-//go:build freebsd || netbsd || openbsd || solaris || dragonfly || linux
+//go:build freebsd || netbsd || openbsd || solaris || dragonfly || linux || aix
 
 package launchgui
 

comp/core/agenttelemetry/impl/sender.go

@@ -18,9 +18,8 @@ import (
 	"strings"
 	"time"
 
-	dto "github.com/prometheus/client_model/go"
-
 	"github.com/DataDog/zstd"
+	dto "github.com/prometheus/client_model/go"
 
 	"github.com/DataDog/datadog-agent/comp/core/config"
 	log "github.com/DataDog/datadog-agent/comp/core/log/def"
@@ -438,7 +437,7 @@ func (s *senderImpl) flushSession(ss *senderSession) error {
 			compressed = true
 			reqBody = reqBodyCompressed
 		} else {
-			s.logComp.Errorf("Failed to compress agent telemetry payload: %v", errTemp)
+			s.logComp.Warnf("Failed to compress agent telemetry payload: %v", errTemp)
 		}
 	}
 

comp/core/config/params_nix.go

@@ -3,7 +3,7 @@
 // This product includes software developed at Datadog (https://www.datadoghq.com/).
 // Copyright 2016-present Datadog, Inc.
 
-//go:build netbsd || openbsd || solaris || dragonfly || linux
+//go:build netbsd || openbsd || solaris || dragonfly || linux || aix
 
 package config
 

comp/core/gui/guiimpl/platform_nix.go

@@ -3,7 +3,7 @@
 // This product includes software developed at Datadog (https://www.datadoghq.com/).
 // Copyright 2016-present Datadog, Inc.
 
-//go:build freebsd || netbsd || openbsd || solaris || dragonfly || linux
+//go:build freebsd || netbsd || openbsd || solaris || dragonfly || linux || aix
 
 package guiimpl
 

comp/dogstatsd/replay/impl/writer.go

@@ -17,7 +17,6 @@ import (
 	"sync"
 	"time"
 
-	// Refactor relevant bits
 	"github.com/DataDog/zstd"
 	"github.com/spf13/afero"
 

comp/metadata/host/hostimpl/payload_aix.go

@@ -0,0 +1,35 @@
+// Unless explicitly stated otherwise all files in this repository are licensed
+// under the Apache License Version 2.0.
+// This product includes software developed at Datadog (https://www.datadoghq.com/).
+// Copyright 2016-present Datadog, Inc.
+
+//go:build aix
+
+package hostimpl
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/DataDog/datadog-agent/comp/metadata/host/hostimpl/utils"
+)
+
+// Payload handles the JSON unmarshalling of the metadata payload
+type Payload struct {
+	utils.CommonPayload
+	utils.Payload
+}
+
+// MarshalJSON serializes a Payload to JSON
+func (p *Payload) MarshalJSON() ([]byte, error) {
+	type PayloadAlias Payload
+	return json.Marshal((*PayloadAlias)(p))
+}
+
+// getPayload returns the complete metadata payload as seen in Agent v5. Note: gohai can't be used on AIX.
+func (h *host) getPayload(ctx context.Context) *Payload {
+	return &Payload{
+		CommonPayload: *utils.GetCommonPayload(h.hostname, h.config),
+		Payload:       *utils.GetPayload(ctx, h.config, h.hostnameComp),
+	}
+}

comp/metadata/inventoryhost/inventoryhostimpl/inventoryhost.go

@@ -216,22 +216,32 @@ func (ih *invHost) fillData() {
 
 	networkInfo, err := networkGet()
 	if err == nil {
-		_, warnings, err = networkInfo.AsJSON()
-	}
-	if err != nil {
-		ih.log.Errorf("failed to retrieve host network metadata from gohai: %s", err) //nolint:errcheck
-	} else {
-		logWarnings(warnings)
-
-		ih.data.IPAddress = networkInfo.IPAddress
-		ih.data.IPv6Address = networkInfo.IPAddressV6.ValueOrDefault()
-		ih.data.MacAddress = networkInfo.MacAddress
-		jsonInterfaces, err := json.Marshal(networkInfo.Interfaces)
+		var netJSON interface{}
+		var warnings []string
+		netJSON, warnings, err = networkInfo.AsJSON()
 		if err != nil {
-			ih.log.Errorf("failed to marshal network interfaces: %s", err) //nolint:errcheck
+			ih.log.Errorf("failed to retrieve host network metadata from gohai: %s", err) //nolint:errcheck
 		} else {
-			ih.data.Interfaces = string(jsonInterfaces)
+			logWarnings(warnings)
+
+			ih.data.IPAddress = networkInfo.IPAddress
+			ih.data.IPv6Address = networkInfo.IPAddressV6.ValueOrDefault()
+			ih.data.MacAddress = networkInfo.MacAddress
+			// Use the interfaces from AsJSON() which correctly handles utils.Value[string]
+			// fields (omitting error-valued fields rather than serializing them as {}).
+			if netData, ok := netJSON.(map[string]interface{}); ok {
+				if ifaces, ok := netData["interfaces"]; ok {
+					jsonInterfaces, jsonErr := json.Marshal(ifaces)
+					if jsonErr != nil {
+						ih.log.Errorf("failed to marshal network interfaces: %s", jsonErr) //nolint:errcheck
+					} else {
+						ih.data.Interfaces = string(jsonInterfaces)
+					}
+				}
+			}
 		}
+	} else {
+		ih.log.Errorf("failed to retrieve host network metadata from gohai: %s", err) //nolint:errcheck
 	}
 
 	if ih.conf.GetBool("metadata_ip_resolution_from_hostname") {

comp/metadata/resources/resourcesimpl/resources_non_supported.go

@@ -3,7 +3,7 @@
 // This product includes software developed at Datadog (https://www.datadoghq.com/).
 // Copyright 2016-present Datadog, Inc.
 
-//go:build windows || freebsd || netbsd || openbsd || solaris || dragonfly
+//go:build windows || freebsd || netbsd || openbsd || solaris || dragonfly || aix
 
 package resourcesimpl
 

comp/process/agent/agent_aix.go

@@ -0,0 +1,70 @@
+// Unless explicitly stated otherwise all files in this repository are licensed
+// under the Apache License Version 2.0.
+// This product includes software developed at Datadog (https://www.datadoghq.com/).
+// Copyright 2024-present Datadog, Inc.
+
+//go:build aix
+
+package agent
+
+import (
+	"slices"
+	"sync"
+
+	"github.com/DataDog/datadog-agent/comp/core/config"
+	log "github.com/DataDog/datadog-agent/comp/core/log/def"
+	"github.com/DataDog/datadog-agent/comp/process/types"
+	"github.com/DataDog/datadog-agent/pkg/config/setup"
+	"github.com/DataDog/datadog-agent/pkg/process/checks"
+	"github.com/DataDog/datadog-agent/pkg/util/flavor"
+)
+
+var (
+	enabled bool
+	Once    sync.Once
+
+	processCheckNames = []string{
+		checks.ProcessCheckName,
+		checks.ContainerCheckName,
+		checks.DiscoveryCheckName,
+	}
+)
+
+func enabledHelper(config config.Component, checkComponents []types.CheckComponent, l log.Component) bool {
+	if setup.IsCLCRunner(config) {
+		return false
+	}
+
+	runInCoreAgent := config.GetBool("process_config.run_in_core_agent.enabled")
+
+	var processEnabled bool
+	for _, check := range checkComponents {
+		if slices.Contains(processCheckNames, check.Object().Name()) && check.Object().IsEnabled() {
+			processEnabled = true
+		}
+	}
+
+	switch flavor.GetFlavor() {
+	case flavor.ProcessAgent:
+		if runInCoreAgent {
+			l.Info("The process checks will run in the core agent via the process-component")
+		} else if processEnabled {
+			l.Info("Process/Container Collection in the Process Agent will be deprecated in a future release " +
+				"and will instead be run in the Core Agent.")
+		}
+		return !runInCoreAgent
+	case flavor.DefaultAgent:
+		return runInCoreAgent
+	default:
+		return false
+	}
+}
+
+// Enabled determines whether the process agent is enabled based on the configuration.
+// On AIX, process checks run in the core agent when process_config.run_in_core_agent.enabled is true.
+func Enabled(config config.Component, checkComponents []types.CheckComponent, l log.Component) bool {
+	Once.Do(func() {
+		enabled = enabledHelper(config, checkComponents, l)
+	})
+	return enabled
+}

comp/process/agent/agent_fallback.go

@@ -3,7 +3,7 @@
 // This product includes software developed at Datadog (https://www.datadoghq.com/).
 // Copyright 2024-present Datadog, Inc.
 
-//go:build !linux
+//go:build !linux && !aix
 
 package agent
 

go.mod

@@ -27,6 +27,12 @@ replace (
 	go.opentelemetry.io/ebpf-profiler => github.com/DataDog/opentelemetry-ebpf-profiler v0.0.202610
 )
 
+// AIX: patched gopsutil with AIX process monitoring support
+replace github.com/DataDog/gopsutil => github.com/DataDog/gopsutil v1.2.5-0.20260303142149-85b991b13594
+
+// AIX: upstream gopsutil with unreleased AIX fixes
+replace github.com/shirou/gopsutil/v4 => github.com/shirou/gopsutil/v4 v4.26.3-0.20260314122645-1ec4f5030b7e
+
 require (
 	code.cloudfoundry.org/bbs v0.0.0-20200403215808-d7bc971db0db
 	code.cloudfoundry.org/garden v0.0.0-20210208153517-580cadd489d2