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grsc.go
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// Deletion Policy parametes
//
// (1 Y+1 w) (1 w)
//
// Abs.Age KeepMaxH KeepMinH Now
// <---------------------|--------------------|---------------|
//
// keep none/del all |<-- keep 1/week -->| keep all |
//
// ## Building
// ```
// #NOT:go build grsc.go
// go build
// # Look for binary goclowdy
// ```
// Resources:
// - https://ueokande.github.io/go-slice-tricks/
// - Go gotchas on slices (pointers to item, etc)
// - https://medium.com/@betable/3-go-gotchas-590b8c014e0a
// - https://dev.to/kkentzo/the-golang-for-loop-gotcha-1n35
package main
// go.formatOnSave
// editor.formatOnSave
// go build grsc.go
import (
"context"
"fmt"
"os" // Args
"reflect"
"regexp"
"time"
"google.golang.org/api/iterator"
//compute "cloud.google.com/go/compute/apiv1" // Used only in lower levels
computepb "cloud.google.com/go/compute/apiv1/computepb"
//goc "VMs"
//macv "MIs"
GPs "github.com/ohollmen/goclowdy/GPs"
MIs "github.com/ohollmen/goclowdy/MIs"
VMs "github.com/ohollmen/goclowdy/VMs"
//"github.com/ohollmen/goclowdy"
//"goclowdy/vm/VMs"
//"goclowdy/mi/MIs"
//MIs "goclowdy/mi"
//VMs "goclowdy/vm"
//"goclowdy/VMs"
//"goclowdy/MIs"
"path" // Base
"google.golang.org/api/iam/v1"
// NEW
//"regexp" // responsibility moved to MIs
"encoding/json"
"sync" // go get -u golang.org/x/sync
"math/rand"
"flag"
//"regexp"
"github.com/ohollmen/goclowdy/workerpool"
"golang.org/x/exp/slices" // 1.21 has this built-in
)
var verdict = [...]string{"KEEP to be safe", "KEEP NEW (< KeepMinH)", "KEEP (MID-TERM, WEEKLY)", "DELETE (MID-TERM)", "DELETE OLD (> KeepMaxH)", "KEEP-NON-STD-NAME", "KEEP (MID-TERM MONTHLY)"}
var envcfgkeys = [...]string{"GCP_PROJECT","GOOGLE_APPLICATION_CREDENTIALS","MI_DELETE_EXEC","MI_STDNAME", "MI_CHUNK_DEL_SIZE"}
var wdnames = []string{"SUN","MON","TUE","WED","THU","FRI","SAT"}
// Default MI client config
// 168 h = 1 = week, (24 * (365 + 7)) hours = 1 year, weekday 5 = Friday (wdays: 0=Sun... 6=Sat). KeepMaxH (days) 365 => 548 (18 m)
var mic MIs.CC = MIs.CC{Project: "", WD_keep: 6, MD_keep: 1, KeepMinH: 168, KeepMaxH: (24 * (548 + 7)), } // tnow: tnow, tloc: loc TZn: "Europe/London"
var bindpara MIs.CC = MIs.CC{}
// Machine image mini-info. Allow deletion to utilize this (for reporting output). Add creation time ?
type MIMI struct {
miname string
class int
}
// Subcommand callback (No params for now)
type SCCB = func() //error
type SubComm struct {
cmd string
name string
cb SCCB
//hide bool
// TODO: Simple slice of paramname=paramtype mappings (how to bind struct mem - by reflection ?) ?
// OR Introspect
// For convention see: https://perldoc.perl.org/Getopt::Long (s=string,i=int,f=float,""=bool=>no value)
// opts []string
}
var scomms = []SubComm{
{"vm_mi_list", "VM list", vm_ls}, // Machine image
{"midel", "Delete Machine images", mi_del},
{"keylist", "List SA Keys from a GCP Project", key_list},
{"env", "List goclowdy (utility) config and environment", env_ls},
{"subarr", "Subarray Test", subarr_test},
{"milist", "List Machine Images (With time stats)", mi_list},
{"vmbackup", "Backup VMs from a project (Use overriding --project and --suffix as needed)", vm_backup},
{"projlist", "List projects (in org)", proj_list},
{"projsvmbackup", "List Projects and VMs", projsvmbackup},
//{"","",},//{"","",},
}
// Env-to-member mapping ( "GOOGLE_APPLICATION_CREDENTIALS" : "CredF")
var argmap = map[string]string{"GCP_PROJECT": "Project", "GCP_BULL": "None"}
var clpara = map[string]string{"project": "", "appcreds": ""}
//
func usage(msg string) {
//subcmds := "vm_mi_list,midel,keylist,env"
if msg != "" { fmt.Printf("Usage: %s\n", msg); }
fmt.Println("Pass one of subcommands: "); // +subcmds
for _, sc := range scomms {
fmt.Printf("- %s - %s\n", sc.cmd, sc.name)
}
}
// Extract subcommand (op) and remove it from os.Argv (for flags module)
func args_subcmd() string {
if len(os.Args) < 2 { return "" } // No room for a subcommand
if mic.Debug { fmt.Printf("Args: %v\n", os.Args) }
op := os.Args[1:2][0]
if mic.Debug { fmt.Printf("OP: %v\n", op); }
os.Args = slices.Delete(os.Args, 1, 2)
if mic.Debug { fmt.Printf("Args: %v\n", os.Args) }
return op;
}
// CL Params as package-global scalars
// var Project = ""
var Filter = ""
var Suffix = ""
var Prefix = "" // for e.g. projlist
// OLD-TODO: Loop trough arg-keys, populate map w. ""-values.
// TODO: Possibly do tiny bit of reflection here to detect type ?
func args_bind() { // clpara map[string]string
// OLD: Use separate (initally empty) bindpara MIs.CC (copy filled-out members by mem-by-mem copy after).
// NEW: Use mic and time parsing (flag.Parse()) after env-sourcing in Init.
// TODO: Establish cases (or if-else) here for sub-command specific type-binding
////// Most of MI based commands /////////////
flag.StringVar(&mic.Project, "project", "", "GCP Cloud project (string) id")
flag.StringVar(&mic.CredF, "appcreds", "", "GCP Cloud Application Credentials (string)")
flag.BoolVar(&mic.Debug, "debug", false, "Set debug mode.")
flag.StringVar(&Filter, "filter", "", "Label Filter for Project Operations")
flag.StringVar(&Suffix, "suffix", "", "Additional Suffix for Machine image (after vmname + IS date)")
flag.StringVar(&Prefix, "prefix", "", "Prefix (string) to use for projects listing (e.g. --prefix ' - ' for YAML list)")
//flag.IntVar(p *int, name string, value int, usage string)
// This does not work based on Go dangling pointer-policies
//flag.StringVar(&clpara["project"], "project", "", "GCP Cloud project (string) id")
//flag.StringVar(&clpara["appcreds"], "appcreds", "", "GCP Cloud Application Credentials (string)")
}
// OLD: Override CLI originated params last (after cfg, env)
func args_override() { // UNUSED
fmt.Printf("Project=%s\n", bindpara.Project)
if bindpara.Project != "" { mic.Project = bindpara.Project; } // After config_load() ?
}
// Override env based on map and (member name) reflect. How to pass generic pointer (any ?) ?
// Interface (is-a-pointer) ? Also any is an interface.
func args_env_merge(e2sm map[string]string, mystruct any ) int { // UNUSED (replaced by env.Set())
cnt := 0
// Validate that mystruct IS-A struct ! reflect.Valueof() vs. refelct.TypeOf() ??
if reflect.TypeOf(mystruct).Kind() != reflect.Struct { fmt.Printf("Not a struct !\n"); return -1; }
// fmt.Println(reflect.ValueOf(e).Field(i))
//}
s := reflect.ValueOf(&mystruct).Elem() // w/o & - get: panic: reflect: call of reflect.Value.Elem on struct Value
//s := reflect.Indirect(reflect.ValueOf(&mystruct))
for k, v := range e2sm {
//confMap[v.Key] = v.Value
ev := os.Getenv(k);
if (ev == "") { fmt.Printf("No value for env: '%s'\n", k); continue; }
fmt.Printf("kv:%s/%s\n", k, v)
//fmt.Println("val(0)", reflect.ValueOf(mystruct).Field(0))
f := s.Elem().FieldByName(v) // .Interface() // OLD: fval (works till f.SetString())
//f := s.FieldByName(v) // N/A either: panic: reflect: call of reflect.Value.FieldByName on interface Value
// Weird, but correct way
if f == (reflect.Value{}) { fmt.Printf("Could not reflect/lookup member: '%s'\n", v); continue; }
//if f.Kind() != "string" { fmt.Printf("Only string fields supported at this time (Not: '%s')", f.Kind()); continue; }
fmt.Printf("Original val('%s', type: '%s'): %s\n", v, f.Kind(), f.Interface())
// TODO: Based on type (f.Kind() ?)
// panic: reflect: reflect.Value.SetString using unaddressable value
// https://stackoverflow.com/questions/48568542/update-an-attribute-in-a-struct-with-reflection
//f.SetString(ev) //
cnt++
}
return cnt; // # changed/overriden
}
func main() {
//ctx := context.Background()
if len(os.Args) < 2 { usage("Subcommand missing !"); return; } // fmt.Println("Pass one of subcommands: "+subcmds); return
op := args_subcmd()
args_bind() // OLD: clpara. Bind here, call flag.Parse() later.
//flag.Parse() // os.Args[2:] From Args[2] onwards
//fmt.Printf("CL-ARGS(map): %v\n", clpara);
//if () {}
//pname := os.Getenv("GCP_PROJECT")
//if pname == "" { fmt.Println("No project indicated (by GCP_PROJECT)"); return }
//if os.Getenv("GOOGLE_APPLICATION_CREDENTIALS") == "" { fmt.Println("No creds given by (by GOOGLE_APPLICATION_CREDENTIALS)"); return }
config_load("", &mic);
//NOT:args_override() // OLD: Worked on bindpara. Would need to call after mic.Init()
idx := slices.IndexFunc(scomms, func(sc SubComm) bool { return sc.cmd == op })
scomms[idx].cb()
return
}
func env_ls() {
fmt.Println("# The environment config:")
for _, evar := range envcfgkeys { fmt.Println("export "+ evar+ "='"+ os.Getenv(evar)+ "'") }
jb, _ := json.MarshalIndent(&mic, "", " ")
fmt.Printf("# Config as JSON (After config load ONLY):\n%s\n\n", jb)
mic.Init();
for _, evar := range envcfgkeys { fmt.Println("export "+ evar+ "='"+ os.Getenv(evar)+ "'") }
//flag.Parse()
//fmt.Printf("XXXX Project=%s\n", project)
jb, _ = json.MarshalIndent(&mic, "", " ")
fmt.Printf("# Config as JSON (After config load and Init()):\n%s\n\n", jb)
if mic.NameRE != nil { fmt.Printf("# MI-RE:\n# - As Str: %s\n# - From RE: %s\n", mic.NameREStr, mic.NameRE); }
}
// Backup VMs from a GCP Project
func vm_backup() {
// Need vmc and mic
// vmc ...
vmc := VMs.CC{Project: mic.Project, CredF: mic.CredF};
err := vmc.Init() // Will pickup
if err != nil { fmt.Println("Failed to Init VMC: ", err); return; }
// Same workaround as for mi_list
flag.Parse()
vmc.Project = mic.Project;
fmt.Printf("vmc Project: %s\n", vmc.Project);
// Consider the --suffix passed from the command line
if Suffix != "" { fmt.Printf("Overriding suffix for the MI backup(ws): %s\n", Suffix); }
// mic ...
rc := mic.Init()
if rc != 0 { fmt.Printf("MI Client Init() failed: %d (%+v)\n", rc, &mic); return; }
fmt.Printf("mic Project: %s\n", mic.Project);
all := vmc.GetAll() //; fmt.Println(all)
// Filter the superset "all" (e.g. "apache.*"). Note: Improve/extend initial slim / narrow VM name based fitering implementation
namepatt := os.Getenv("GCP_VM_NAMEPATT") // TODO: param from ...
if namepatt != "" {
fmt.Printf("Got namepatt (GCP_VM_NAMEPATT): %s\n", namepatt)
NameRE, err := regexp.Compile(namepatt)
if err != nil { fmt.Printf("namepatt (RE) not comiled: %s\n", err); return; }
var ftd []*computepb.Instance
for _, vm := range all { // FindStringSubmatch
if NameRE.FindString(vm.GetName()) != "" { ftd = append(ftd, vm); }
}
all = ftd
}
icnt := len(all)
if icnt == 0 { fmt.Println("No VMs found (after filtering)"); return }
fmt.Printf("%d VMs to backup\n", icnt);
mic.Debug = true
//fmt.Printf("# Got %v Instances\n", icnt) // Initial ... (Filtering ...)
//return;
// Iterate VM:s
var wg sync.WaitGroup
mic.Wg = &wg // Set as shared (ptr)
namesuffbase := mic.DatePrefix(Suffix, nil) // mic.Tnow().Format("2006-01-02")+"-testsuffix" // Appended to name, should be e.g. ISO date + "-" + daily/weekly/monthly
//namesuffbase = "testsuffix"
fmt.Println("Use name suffix (refined): "+namesuffbase); // return;
// Initially: all listed in VM-to-backup: ..., but only 3 or 4 show "MI name to use: ..." see:
totake := mic.MIsToTake(nil) // 1..3
if totake > 0 { fmt.Printf("Take (bitwise): %d\n", totake); }
sarr := MIs.BitsToTimesuffix(totake) // suffix array
cb := func(vm *computepb.Instance) {
//defer wg.Done()
// go - NOT needed here if stated before
wg.Add(len(sarr)) // if wg
for _, suffitem := range sarr {
namesuffbase_t := mic.DatePrefix(suffitem, nil)
go mic.CreateFrom(vm, namesuffbase_t, "")
}
}
// Do a simple / single backup with suffix passed from CLI
cb_simple := func(vm *computepb.Instance) {
wg.Add(1)
go mic.CreateFrom(vm, namesuffbase, "")
}
// Note: Match wg.Add(1) / wg.Done()
for _, vm := range all{ // Instance
fmt.Println("VM-to-backup: ", vm.GetName()) // if mc.Debug
//go cb(item, icfg.Userdata);
// 2nd: altsuff ... will be appended staring w. '-'
//go // Not needed here
if Suffix != "" { cb_simple(vm)
} else {
cb(vm) // mic.CreateFrom(vm, "testsuffix")
}
//wg.Done() // if wg (?) NOT here, but at the end of goroutine task completion
}
fmt.Println("Done w. launching. Starting to wait ...");
wg.Wait()
mic.Wg = nil // Set null for client reuse (ONLY after Wait)
}
// List VMs. Set GCP_PROJECT and GOOGLE_APPLICATION_CREDENTIALS as needed (or get from config)
func vm_ls() { // pname string
//ctx := context.Background()
//mic.Init() // OLD: Init due to side effects affecting vmc
// test overlapping sysm (old: vs). Borrow params from mic.
vmc := VMs.CC{Project: mic.Project, CredF: mic.CredF} //
err := vmc.Init()
if err != nil { fmt.Println("Failed to Init VMC: ", err); return; }
all := vmc.GetAll() //; fmt.Println(all)
icnt := len(all)
if icnt == 0 { fmt.Println("No VMs found"); return }
fmt.Printf("# Got %v Instances\n", icnt) // Initial ... (Filtering ...)
//stats := VMs.CreateStatMap(all)
//fmt.Printf("%v", stats)
// Test for daily MI. This is now embedded to mic.CreateFrom() logic.
//mic.Init() // If bottom MI lookup enabled
for _, it := range all{ // Instance
fmt.Println(""+it.GetName())
continue;
// OLD: Check presense of standard-name (ISO-time-appended to hostname) MI Image
/*
in := MIs.StdName(it.GetName())
fmt.Println("STD Name:", in)
mi := mic.GetOne(in)
if mi != nil {
fmt.Println("Found image: ", mi.GetName())
} else { fmt.Println("No (std) image found for : ", it.GetName()) }
*/
}
return
}
// New MI List with statistical count of MIs per time eras (now...1w, 1w...1y).
// Mix of access to VMs (find all) and MIs (See: vm_ls() for "ingredients" of solution)
// The mic.HostREStr must be a pattern that captures the hostname part from the machine image as capture group 1
// e.g. export MI_HOSTPATT='^(\w+-\d{1,3}-\d{1,3}-\d{1,3}-\d{1,3})'
func mi_list() {
//ctx := context.Background()
//////// VMs //////////
fmt.Printf("Proj: %s\n", mic.Project);
vmc := VMs.CC{Project: mic.Project, CredF: mic.CredF} //
err := vmc.Init()
// Note: the flag.Parse() and Project reassign are workaround for inherent state problems for the
// config -> env env.Set(cfg)-> CL flag.Parse() override seq.
flag.Parse()
vmc.Project = mic.Project;
if err != nil { fmt.Println("Failed to Init VMC: ", err); return; }
fmt.Printf("Proj: %s\n", vmc.Project);
allvms := vmc.GetAll()
if len(allvms) < 1 { fmt.Println("No VMs found"); return; }
stats := VMs.CreateStatMap(allvms)
if vmc.Debug { fmt.Printf("%v %v", allvms, stats) }
//////// MIs ///////////
rc := mic.Init()
if rc != 0 {fmt.Printf("MI Client Init() failed: %d (%+v)\n", rc, &mic); return; }
all := mic.GetAll()
// Because we collect stats by hostname, the pattern to match must be there !
if mic.HostREStr == "" { fmt.Printf("Warning: No HostREStr in environment (MI_HOSTPATT) or config !"); return; }
if mic.HostRE == nil { fmt.Printf("Warning: No HostRE pattern matcher (RE syntax error ?) !"); return; }
totcnt := 0 // TODO: More diverse stats
secnt := mic.HostRE.NumSubexp()
fmt.Printf("Subexpressions: %d\n", secnt);
for _, mi := range all {
totcnt++
t, err := mic.CtimeUTC(mi)
if err != nil { fmt.Printf("MI C-TS not parsed !"); continue; }
agehrs := mic.AgeHours2(t)
if agehrs > float64(mic.KeepMaxH) { fmt.Printf("Too old\n"); continue; }
if (mic.HostRE != nil) {
m := mic.HostRE.FindStringSubmatch( mi.GetName() )
if len(m) < 1 { fmt.Printf("No capture items for hostname matching (%s)\n", mi.GetName() ); continue; }
fmt.Printf("HOSTMatch: %v, MINAME: %s AGE: %f\n", m[1], mi.GetName(), agehrs );
mis, ok := stats[m[1]] // MI stat. Is this copy or ref to original ? https://golang.cafe/blog/how-to-check-if-a-map-contains-a-key-in-go
//if mis.Mincnt > 100 {} // Dummy
if !ok { fmt.Printf("No stats entry for captured VM name '%s'\n", m[1]); continue; }
if agehrs <= float64(mic.KeepMinH) { mis.Mincnt++; //stats[m[1]].Mincnt++
} else if agehrs <= float64(mic.KeepMaxH) { mis.Maxcnt++ ; //stats[m[1]].Maxcnt++
} // else { mis.Mincnt++; mis.Maxcnt++ } // Last: test/debug
} // NumSubexp
}
// The downside of having map value-struct as *pointer* is we see only mem-address in (raw Printf("%v", ...)) dump (!!!)
//fmt.Printf("STATS: %v\n", stats)
// Report Backup statistics per host (in current project). TODO: Populate Struct for JSON
//var reparr []*VMs.MIStat // Empty/0-items, no pre-alloc
reparr := make([]*VMs.MIStat, len(stats)) // Prealloc to right size (Use indexes)
i := 0
for _, stat := range stats {
fmt.Printf("%s %d %d\n", stat.Hostname, stat.Mincnt, stat.Maxcnt);
reparr[i] = stat // OLD: append(reparr, stat) // append() will append to current pre-alloc'd len of slice !!
i++
}
jba, err := json.MarshalIndent(reparr, "", " ") // ([]byte, error)
fmt.Printf("%s\n", jba) // Ok w. []byte
fmt.Printf("# %d Images from %s\n", totcnt, mic.Project);
}
// Delete machine images per given config policy.
// TODO: Possibly Convert to use getAll, except we want MIMI (not full computepb.MachineImage ents)
func mi_del() { // pname string
ctx := context.Background()
//config_load("", &mic); // Already on top
rc := mic.Init()
if rc != 0 {fmt.Printf("MI Client Init() failed: %d (%+v)\n", rc, &mic); }
fmt.Printf("Config (after init): %+v\n", &mic);
if rc != 0 { fmt.Printf("Machine image module init failed: %d\n", rc); return }
// Classification stats. Note: no wrapping make() needed w. element initialization
miclstat := map[int]int{0: 0, 1:0, 2:0, 3:0, 4:0, 5:0}
//TEST: miclstat_out(mic, miclstat); return;
var maxr uint32 = 500 // 20
if mic.Project == "" { fmt.Println("No Project passed"); return }
req := &computepb.ListMachineImagesRequest{
Project: mic.Project,
MaxResults: &maxr } // Filter: &mifilter } //
//fmt.Println("Search MI from: "+cfg.Project+", parse by: "+time.RFC3339)
it := mic.Client().List(ctx, req)
if it == nil { fmt.Println("No mi:s from "+mic.Project); return; }
// https://code.googlesource.com/gocloud/+/refs/tags/v0.101.1/compute/apiv1/machine_images_client.go
//var delarr []*computepb.MachineImage // var item *computepb.MachineImage
var delarr []MIMI
// Iterate MIs, check for need to del
totcnt := 0; todel := 0;
verbose := true
for {
//fmt.Println("Next ...");
mi, err := it.Next()
if err == iterator.Done { fmt.Printf("# Iter of %d MIs done\n", totcnt); break }
if mi == nil { fmt.Println("No mi. check (actual) creds, project etc."); break }
/////// Actual processing ////////
// NEW: Use discovered UTC C-TS
t, err := mic.CtimeUTC(mi)
if err != nil { fmt.Println("Create-time not parsed !");break; }
// OLD: mi.GetCreationTimestamp()
if verbose { fmt.Println("MI:"+mi.GetName()+" (Created: "+t.Format(time.RFC3339)+" "+wdnames[t.Weekday()]+")") } //
var cl int = mic.Classify(mi)
if verbose { fmt.Println(verdict[cl]) }
miclstat[cl]++
if MIs.ToBeDeleted(cl) {
todel++
if verbose { fmt.Printf("DELETE %s\n", mi.GetName()) } // Also in DRYRUN
mimi := MIMI{miname: mi.GetName(), class: cl}
// Store MI to list
//delarr = append(delarr, mi) // OLD full mi
delarr = append(delarr, mimi)
} else {
if verbose { fmt.Printf("KEEP %s\n", mi.GetName()) }
}
if verbose { fmt.Printf("============\n") }
totcnt++
}
// Dry-run (or no ents) - terminate here
if !mic.DelOK { fmt.Printf("# Dry-run mode, DelOK = %t (%d to delete)\n", mic.DelOK, todel); miclstat_out(mic, miclstat);return; }
if len(delarr) == 0 { fmt.Printf("# Nothing to Delete (DelOK = %t, %d to delete)\n", mic.DelOK, todel); miclstat_out(mic, miclstat);return; }
// Delete items from delarr - either serially or in chunks or using channels
if mic.ChunkDelSize == -1 {
mimilist_del_chan(mic, delarr)
} else if mic.ChunkDelSize == 0 {
mimilist_del_serial(mic, delarr)
} else {
mimilist_del_chunk(mic, delarr)
}
}
func miclstat_out(mic MIs.CC, miclstat map[int]int) {
// Need: .UTC(). ?
fmt.Printf("MI Class (keep/delete reasoning) stats (%s, %s):\n", mic.Project, time.Now().Format("2006-01-02T15:04:05-0700")); // \n%+v\n", miclstat (raw dump)
for key, value := range miclstat {
fmt.Println("Class:", verdict[key], "(",key,") :", value)
}
}
// Serial Delete
func mimilist_del_serial(mic MIs.CC, delarr []MIMI) {
for _, mimi := range delarr { // i
fmt.Printf("%s (%s)\n", mimi.miname, verdict[mimi.class]) // mi.GetName()
if mic.DelOK {
//OLD:rc := mic_delete_mi(&mic, mi.GetName());
rc := mic_delete_mi(&mic, &mimi);
if rc != 0 { }
}
}
}
// Chunk / Parallel delete
func mimilist_del_chunk(mic MIs.CC, delarr []MIMI) { // ...
//return
sasize := mic.ChunkDelSize
chunks := chunk_mimi(delarr, sasize )
if chunks == nil { return }
// Modeled along
for i, chunk := range chunks {
fmt.Printf("Chunk %d (of %d items): %+v\n", i, sasize, chunk);
var wg sync.WaitGroup
for _, item := range chunk{
wg.Add(1)
// Workaround for go remembering the last value for the pointer / chunk (here)
// CB closure gets the *current* value in iteration and forces the actual value to be passed
// (mnot the last value of iteration).
func (item MIMI) { go mic_delete_mi_wg(&mic, &item, &wg) } (item)
// test sleeping to not hit API throttling.
// https://golang.cafe/blog/golang-sleep-random-time.html
rand.Seed(time.Now().UnixNano())
//ms := time.Millisecond*100
//ms = time.Millisecond*(50 + rand.Intn(100))
ms := time.Duration(rand.Intn(100)+50) * time.Millisecond
fmt.Printf("SLEEP: %d\n", ms);
time.Sleep(ms)
}
wg.Wait()
fmt.Printf("Waited for chunk to complete\n");
}
return
}
// Delete items directly using original lnear delarr using channels (underneath).
// This runs N items *all* the time instead waiting a "chunk" (where items could take different time
// to complete individually, waiting for the longest processing one) to complete.
func mimilist_del_chan(mic MIs.CC, delarr []MIMI) {
// TODO: Use NewWorkerPool() to have control over config
wpool, _ := workerpool.NewWorkerPool(&workerpool.Config{WorkerLimit: mic.WorkerLimit, WorkerTimeoutSeconds: 0}) // NewDefaultWorkerPool()
var wg sync.WaitGroup
wg.Add(len(delarr))
for _, mimi := range delarr {
// Inner func gets assigned to work - so it *is* (inner) anon func
go func(mimi MIMI) {
defer wg.Done()
wpool.RequestWork(func() {mic_delete_mi(&mic, &mimi)})
}(mimi)
}
wg.Wait()
fmt.Printf("Channel based processing completed !\n");
}
func mic_delete_mi(mic * MIs.CC, mimi * MIMI) int { // mi *computepb.MachineImage
err := mic.Delete(mimi.miname) // mi.GetName()
if err != nil {
fmt.Printf("Error Deleting MI: %s\n", mimi.miname) // mi.GetName()
return 1
} else {
fmt.Printf("Deleted %s\n", mimi.miname) // mi.GetName()
return 0
}
//fmt.Printf("Should have deleted %s. Set DelOK (MI_DELETE_EXEC) to actually delete.\n", mi.GetName())
//return 0
}
func key_list() {
ctx := context.Background()
iamService, err := iam.NewService(ctx)
if err != nil { fmt.Println("No Service: ", err); return }
var pname string = mic.Project
acct := os.Getenv("GCP_SA")
pname = os.Getenv("GCP_SA_PROJECT") // override
if acct == "" { fmt.Println("No GCP_SA"); return }
if pname == "" { fmt.Println("No GCP_SA_PROJECT"); return }
sapath := fmt.Sprintf( "projects/%s/serviceAccounts/%s", pname, acct)
resp, err := iamService.Projects.ServiceAccounts.Keys.List(sapath).Context(ctx).Do()
if err != nil { fmt.Printf("No Keys %v\n", err); return }
//fmt.Println("Got:", resp) // iam.ListServiceAccountKeysResponse
fmt.Printf("%T\n", resp) // import "reflect" fmt.Println(reflect.TypeOf(tst))
for _, key := range resp.Keys {
fmt.Printf("%T\n", key) // iam.ServiceAccountKey
fmt.Printf("%v Exp.: %s\n", path.Base(key.Name), key.ValidBeforeTime)
}
// Also: SignJwtRequest, but: https://cloud.google.com/iam/docs/migrating-to-credentials-api
}
func proj_list() { // error ?
flag.Parse()
//fmt.Printf("Got Filter: %s\n", Filter);
//var qmap = map[string]string{} // {"include": "true"}
qmap := GPs.KvParse(Filter)
qstr := GPs.Map2Query(qmap)
if qstr != "" { fmt.Printf("Query: %s\n", qstr); }
Projects := GPs.ProjectsList(qstr)
fmt.Printf("# %d Projects retrieved by filter: '%s'\n", len(Projects), qstr)
// Filter ?
for _, project := range Projects {
// fmt.Printf("%s =>\n%v\n", project.ProjectId, *project)
if Prefix != "" { fmt.Print(Prefix); }
fmt.Printf("%s\n", project.ProjectId)
}
return
}
// E.g. 352 => 60 (5s)
func projsvmbackup() {
flag.Parse()
qmap := GPs.KvParse(Filter)
qstr := GPs.Map2Query(qmap)
//qstr := "" // "labels.include=true"
var vmc VMs.CC = VMs.CC{Project: ""} // CredF: ""
err := vmc.Init();
if err != nil { fmt.Printf("No vmc !"); return; }
Projects := GPs.ProjectsList(qstr)
if Projects == nil { fmt.Printf("No Projects Listed"); return; }
pvms := GPs.ProjectsVMs(Projects, vmc)
for _, pvm := range pvms {
fmt.Printf(" - VM: %s/%s\n", pvm.Project.ProjectId, pvm.Vm.GetName());
}
}